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Mineral Specimens - page 21
The Folch Collection

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Carles Curto Text: Carles Curto (curator of the Geology Museum, Barcelona ) & Jordi Fabre
Assistance from John S. White (former Smithsonian curator) John S. White

 


The Folch Collection

The Folch Collection was known during the period 1960-1980 as one of the best private collections in the world. It was famous worldwide for its size (more than 15,000 specimens), the quality of the pieces, the large number of classic specimens, which are now almost impossible to obtain, and the style of the collection, which is surprisingly 'modern'. Sr. Folch (Joaquín Folch i Girona) collected during a period when the style of most collectors in Europe consisted of gathering large specimens of rare minerals, and in which esthetics and perfection were not that important. That said he actually tended to collect smaller specimens that were esthetic, and, where possible, damage free. On the death of Sr. Folch, in 1984, the collection passed to his son Alberto, and when he in turn died to his grandson Joaquín Folch who wisely decided to keep the collection exactly as his grandfather had it (including the display cases). So the collection was kept together and its enormous historical value has not been lost.

While I was a teenager, and still rather young, I had the luck to have been warmly invited by Sr. Folch to visit the collection. I made numerous visits, and with him beside me I obtained an enormous amount of mineralogical information, which went far beyond what I would have learned anywhere else. Given this experience I have always had a strong connection with the collection.

During my ongoing contacts with the Folch family a moment arrived when they suggested the idea of updating the collection so as to make it more up to date - since 1984 nothing new has been added and a significant gap in the minerals found since then has developed. After lots of friendly, unhurried discussions the Folch family asked me to help them with this updating process. To do this we have the luck that the collection includes many attractive duplicates. These duplicates do not add much to the Folch collection, as there are other examples of all of them, but given their unusual localities or simple high quality they are still good commercial specimens.

So, for the first time, the duplicate specimens from the Folch Collection will emerge into the sunlight. Each one of them has hand written notes made by Sr. Folch himself as well as, in many cases, his official label and number (in the case that they were part of the official collection). The duplicates will be sold during the shows that we normally attend, and also through our web site and store in Barcelona (you need to arrange a visit beforehand, which we will try to find a way of accommodating).

This project will take us a long time, as the pieces available are numerous and neither the family nor I wish to make the choices too quickly. The idea is to work slowly and select the pieces in a very systematic and careful manner. We think that given the special characteristics of the specimens that will be available and their historical value this will be a great chance for many collectors to obtain pieces that would otherwise have remained pure dreams.

We hope that little by little we can satisfy all those that wish to acquire a duplicate from the Folch collection and we can assure them that this task will give us far more pleasure than simple economic benefits. Sr. Folch was my spiritual father in mineralogical terms so handling his minerals and helping to improve his collection with new purchases is a fantastic sensation for me.

I cannot thank the Folch family enough for their good faith and for their wish to improve the collection. They are helped by the undeniable support and enthusiasm of Francisco Riquelme, the current conservator of the collection, and between them they have taken a step that many people have wished them to take and that will give collectors worldwide great joy, as well as increasing interest in and knowledge of the Folch collection within Spain and the rest of the world.

 


1926: Mineralogical Society, Jubilee Celebration.
Sr. Folch is the third from the right in the first row on foot

 

 

 


Sr. Folch holding an Apatite from Panasqueira

 

 

 

 

Typical handwritten labels from the Folch Collection

 



Typical record from the Folch Collection

 

Link to sold specimens from the Folch Collection 

USA


Arizona

Copper
Copper. Copper.

RB27I2: Dendritic growth of crystals, some of them very well defined, bright and with small coverage of Quartz.
Ray Mine, Ray District, Pinal County, Arizona  USA

Specimen size: 13.8 × 9.5 × 3 cm = 5.4” × 3.7” × 1.2”

Main crystal size: 2.1 × 0.8 cm = 0.8” × 0.3”

With handwritten note from the Folch Collection


Order
Cuprite (Chalcotrichite) with Copper
Cuprite (Chalcotrichite) with Copper

RH6V0: Arborescent growths of crystals of native Copper on matrix, with mossy aggregates of very thin fibrous crystals of Cuprite (variety chalcotrichite), very bright and with deep red color.
We’ll send the Minerals Unlimited label to the buyer of the specimen.
Ray Mine, Ray district, Pinal County, Arizona  USA (±1963)

Specimen size: 6.8 × 5.5 × 2 cm = 2.7” × 2.2” × 0.8”

With handwritten note & record from the Folch Collection


Cuprite (Chalcotrichite) with Copper. Cuprite (Chalcotrichite) with Copper.
Order
Cuprite
Cuprite. Cuprite.

RD96V0: Arborescent growths of copper covered by cubic crystals of Cuprite, translucent, bright and vivid red in color. Of excellent quality for the locality, a great North American classic.
Ray Mine, Ray district, Pinal County, Arizona  USA (±1964)

Specimen size: 9.3 × 6 × 1.5 cm = 3.7” × 2.4” × 0.6”

Main crystal size: 0.2 × 0.2 cm = 0.1” × 0.1”

With handwritten note from the Folch Collection


Order
Copper

RD47K4: Arborescent growth of crystals very much better defined than usual in this kind of sample, perfectly conserved. On the back of the Schneider's label that is with the specimen is written the year 1969.
New Cornelia Pit, Ajo, Pima County, Arizona  USA (±1969)

Specimen size: 9.3 × 3.3 × 2.4 cm = 3.7” × 1.3” × 0.9”

Main crystal size: 0.5 × 0.5 cm = 0.2” × 0.2”

With handwritten note from the Folch Collection

Opal? intense fluorescence short UV & fluorescent long UV

Copper. Front
Front
Copper. Rear
Rear
Copper.
Sold
Cuprite (Chalcotrichite) with Copper
Cuprite (Chalcotrichite) with Copper. Cuprite (Chalcotrichite) with Copper.

RC6K4: Fibrous aggregates of excellent luster and very intense red color on laminar growths of native Copper on matrix.
Ajo, Pima County, Arizona  USA (±1973)

Specimen size: 7.7 × 6 × 5 cm = 3.0” × 2.4” × 2.0”

With handwritten note from the Folch Collection


Order
Copper

RL64L9: A miniature from a classic locality. Arborescent growth of Copper crystals, some of them well defined.
The piece is accompanied by a handwritten label from the Folch collection that we will send to the buyer.
Bisbee, Warren, Cochise County, Arizona  USA

Specimen size: 3.5 × 2.4 × 2.3 cm = 1.4” × 0.9” × 0.9”

With handwritten note from the Folch Collection

Fluorescent short UV

Copper.
Sold
Cuprite with Copper
Cuprite with Copper.
Cuprite with Copper. Cuprite with Copper.
Cuprite with Copper

RA60V0: Groups of small octahedral crystals of Cuprite with sharp faces and edges and with intense red color. They are on a matrix of massive Cuprite and with thick growths of Copper.
With a label of the legendary company Foote that we'll send to the buyer.
Copper Queen Mine, Bisbee, Warren, Cochise County, Arizona  USA (±1952)

Specimen size: 6.1 × 3.6 × 3.1 cm = 2.4” × 1.4” × 1.2”

Main crystal size: 0.3 × 0.3 cm = 0.1” × 0.1”

With handwritten note from the Folch Collection


Sold
Wulfenite with Mimetite
Wulfenite with Mimetite

RQ86M0: Very well defined Wulfenite crystals, with an excellent color and luster and on matrix.
The specimen is accompanied by an old label from the “Antigua Casa Soler y Pujol” (old Soler & Pujol establishment) an antique Natural Science materials supplier from Barcelona. On the back side of the label appears a handwritten note from Mr. Folch where he was recording that he bought the specimen in 1953.

Mammoth-St. Anthony Mine, Tiger, Pinal County, Arizona  USA (±1953)

Specimen size: 4.5 × 4.5 × 2.8 cm = 1.8” × 1.8” × 1.1”

Main crystal size: 0.9 × 0.7 cm = 0.4” × 0.3”

With handwritten note from the Folch Collection


Wulfenite with Mimetite. Wulfenite with Mimetite.
Sold

California

Axinite-(Fe) with Amphibole
Axinite-(Fe) with Amphibole. Front
Front
Axinite-(Fe) with Amphibole. Rear
Rear

RE61M5: Sharp crystals, brown with mauve shades, with an indeterminate amphibole that forms aggregates of acicular green crystals. We investigated the locality to document it more precisely but we haven’t found more details or similar comparative material, so we retain the name furnished by Folch documentation.
Mariposa County, California  USA

Specimen size: 3.7 × 3 × 3.5 cm = 1.5” × 1.2” × 1.4”

Main crystal size: 3 × 1.4 cm = 1.2” × 0.6”

With handwritten note from the Folch Collection


Sold

Colorado

Pyrite

RA12N4: From an American classic locality. Although originally labeled as Bravoite in reference to the grayish coating on Pyrite crystals, our analysis didn't confirm the existence of Bravoite. Subsequent consultations also confirm that it is not Bravoite and, even knowing that similar specimens could also contain Molybdenite, this species didn't appear in our analysis.
Gilman, Gilman District, Eagle County, Colorado  USA

Specimen size: 5.2 × 3.6 × 3 cm = 2.0” × 1.4” × 1.2”

With handwritten note from the Folch Collection


Pyrite. Front
Front
Pyrite. Side
Side
Order
Topaz
Topaz.

RY96M2: A colorless topaz specimen with an irregular growth but with well defined faces and edges. We would like to emphasize the locality, very unusual for good sized Topaz crystals.
Pikes Peak, El Paso County, Colorado  USA

Specimen size: 5.6 × 3.7 × 1.4 cm = 2.2” × 1.5” × 0.6”

With handwritten note from the Folch Collection


Sold
Microcline (amazonite) "Whitecap"
Microcline (amazonite) "Whitecap"

RL27K9: Amazonite crystal with a second crystallization phase, known as “whitecap” (or white termination), the top side of the amazonite is this color.
Pikes Peak, El Paso County, Colorado  USA (±1964)

Specimen size: 8.1 × 5.9 × 3.3 cm = 3.2” × 2.3” × 1.3”

With handwritten note & record from the Folch Collection


Microcline (amazonite) "Whitecap". Front
Front
Microcline (amazonite) "Whitecap". Top
Top
Order

Enargite with Pyrite and Quartz
Enargite with Pyrite and Quartz. Enargite with Pyrite and Quartz.

RE27R6: A U.S. classic with sharp prismatic crystals of Enargite, bright and with excellent terminations. On matrix, with Pyrite and Quartz.
Butte, Silver Bow County, Montana  USA

Specimen size: 6 × 5.2 × 3.4 cm = 2.4” × 2.0” × 1.3”

Main crystal size: 0.6 × 0.5 cm = 0.2” × 0.2”

With handwritten note from the Folch Collection


Euro: 220 / US$ 281 / Yen: 28630
Reservado
Axinite-(Mn)
Axinite-(Mn)

RQ16M5: The crystal, from an uncommon locality, is on matrix and, even being poorly defined, it is of the species Axinite-(Mn), considerably less common than Axinite-(Fe).
The specimen is with a label from John S. Albanese, that will be sent to the buyer.
Luning, Nevada  USA

Specimen size: 5.1 × 4.2 × 2.6 cm = 2.0” × 1.7” × 1.0”

With handwritten note from the Folch Collection


Axinite-(Mn).
Order
Linarite with Quartz
Linarite with Quartz. Front
Front
Linarite with Quartz. Rear detail
Rear detail

RF11M2: From one of the classic localities for the species. Concretions and small flattened crystals (in the vug on the back side of the specimen) with an intense and characteristic blue color, all on a Quartz matrix.
Bingham, Hansonburg, Socorro County, New Mexico  USA (±1959)

Specimen size: 5.3 × 3.2 × 1.8 cm = 2.1” × 1.3” × 0.7”

Main crystal size: 0.1 × 0.1 cm = 0.0” × 0.0”

With handwritten note from the Folch Collection


Sold
Dravite

RH6F8: This one is really for specialists. One of the few crystals of Elbaite from St Lawrence County. The specimen is, obviously, not that appealing as not all the faces have grown fully. But it is part of mineralogical history.
St. Lawrence County, New York  USA (±1980)

Specimen size: 2 × 1.7 × 1.7 cm = 0.8” × 0.7” × 0.7”

With handwritten note from the Folch Collection

Fluorescent long & short UV

Dravite.
Order

MEXICO - CANADA


Mexico

Wulfenite with Calcite
Wulfenite with Calcite.
Wulfenite with Calcite.
Wulfenite with Calcite

RH94M9: Group of thick tabular crystals that have very well defined faces and edges, excellent luster and a very deep orange color. On Limonite matrix.
The specimen is accompanied by a Lidstrom’s label.
Sierra de Los Lamentos, Ahumada, Chihuahua  Mexico (±1968)

Specimen size: 10.8 × 7.8 × 4.5 cm = 4.3” × 3.1” × 1.8”

Main crystal size: 0.9 × 0.8 cm = 0.4” × 0.3”

With handwritten note from the Folch Collection

Calcite fluorescent long & short UV

Order
Wulfenite with Vanadinite (variety endlichite)

RA16H9: On this sample, a classic, we specially note the quantity of tabular crystals, their color and that they are free of damage. The coverage of the matrix is a surface of small crystals of Endlichite a highly arsenical variety of Vanadinite.
Mina Ahumada, Sierra de Los Lamentos, Ahumada, Chihuahua  Mexico

Specimen size: 12 × 8.5 × 9.5 cm = 4.7” × 3.3” × 3.7”

Main crystal size: 1.4 × 1.3 cm = 0.6” × 0.5”

With handwritten note from the Folch Collection


Wulfenite with Vanadinite (variety endlichite). Front
Front
Wulfenite with Vanadinite (variety endlichite). Side
Side
Wulfenite with Vanadinite (variety endlichite). <br>

Sold
Quartz Amethsyt with Quartz and Epidote
Quartz Amethsyt with Quartz and Epidote. Front
Front
Quartz Amethsyt with Quartz and Epidote. Rear
Rear
Quartz Amethsyt with Quartz and Epidote

RC86V0: Group on matrix of transparent crystals with good size, color and luster. With color zoning, more concentrated on the terminations. Surely one of the first known samples from Las Vigas, as the old label of Lidstrom’s indicates. It reflects the uncertainty of the locality at the time because the original label says “Guerrero” , with a later correction of Folch, that locates the sample properly in Veracruz. We’ll send the Lidstrom's label to the buyer of the specimen.
Las Vigas, Veracruz  Mexico (±1969)

Specimen size: 7.6 × 6.8 × 3.7 cm = 3.0” × 2.7” × 1.5”

Main crystal size: 4 × 1.7 cm = 1.6” × 0.7”

With handwritten note from the Folch Collection


Order
Smithsonite
Smithsonite

RD76V5: Botryoidal aggregate with intense and deep pink-mauve color and good luster. It is coating a rocky matrix.
The sample is with a label and the collection card that we'll send to the buyer.
Mina La Suerte, Choix, Sinaloa  Mexico (±1972)

Specimen size: 7.8 × 7.1 × 2.4 cm = 3.1” × 2.8” × 0.9”

With handwritten note & record from the Folch Collection


Smithsonite. Smithsonite.
Sold

Canada

Diopside with Calcite
Diopside with Calcite. Front
Front
Diopside with Calcite. Top
Top
Diopside with Calcite

RA16M3: Group of light green prismatic Diopside crystals on a Calcite matrix and with Mica crystals.
This sample was from Scott J. Williams of Scottsdale (Arizona). The piece is accompanied by the Williams label and card Nr. 5244 from the Folch Collection which we’ll send to the buyer.
Bird's Creek, Bancroft, Hastings County, Ontario  Canada (±1960)

Specimen size: 5.1 × 4.9 × 3.1 cm = 2.0” × 1.9” × 1.2”

Main crystal size: 2.4 × 1.9 cm = 0.9” × 0.7”

With handwritten note & record from the Folch Collection

Calcite minor fluorescence long & short UV

Sold
Rhodochrosite with Analcime and Aegirine

RM14M0: Excellent miniature. Group of rhombohedral Rhodochrosite crystals, one of them dominant, with good color and luster for this locality. With small white Analcime crystals and an Aegirine crystal centered in one face of the main Rhodochrosite crystal.
Mont Saint-Hilaire, Rouville County, Quιbec  Canada (±1979)

Specimen size: 2.2 × 1.9 × 1.7 cm = 0.9” × 0.7” × 0.7”

Main crystal size: 1 × 1 cm = 0.4” × 0.4”

With handwritten note from the Folch Collection


Rhodochrosite with Analcime and Aegirine.
Sold

SPAIN


Tyrolite with Conichalcite and Azurite
Tyrolite with Conichalcite and Azurite.
Tyrolite with Conichalcite and Azurite. Tyrolite with Conichalcite and Azurite.
Tyrolite with Conichalcite and Azurite

RA6W6: Fanlike growths of laminar crystals of Tyrolite with a green, slightly blue, color and rough growths of the same mineral, with Azurite and globular growths of Conichalcite on a limonite matrix. The Chrysocolla cited on the original label from Folch surely refers to the rough Tyrolite.
Mina Delfina, Ortiguero, Cabrales, Asturias  Spain

Specimen size: 4.3 × 3.8 × 2.5 cm = 1.7” × 1.5” × 1.0”

With handwritten note from the Folch Collection


Sold
Cobaltoan Calcite

RJ47W6: Translucent polished section with banded growths and nucleus of very intense color. The sample has on some of its sides the original matrix that contrasts with the deep color of the Calcite.
Mina Solita, Peramea, Baix Pallars, Lleida  Spain

Specimen size: 11.2 × 11 × 1.8 cm = 4.4” × 4.3” × 0.7”

Minor fluorescence long & short UV

With handwritten note from the Folch Collection

Cobaltoan Calcite. Front
Front
Cobaltoan Calcite. Rear
Rear
Sold
Cobaltoan Calcite with Calcite and Aurichalcite
Cobaltoan Calcite with Calcite and Aurichalcite. Cobaltoan Calcite with Calcite and Aurichalcite.
Cobaltoan Calcite with Calcite and Aurichalcite. Cobaltoan Calcite with Calcite and Aurichalcite.

RG47W6: Botryoidal growths, on matrix, of translucent cobaltoan Calcite. It has a very uniform, intense and deep color and it is with yellowish globular growths of Calcite and thin surfaces of pale greenish Aurichalcite.
Mina Solita, Peramea, Baix Pallars, Lleida  Spain

Specimen size: 11.7 × 11.4 × 7.6 cm = 4.6” × 4.5” × 3.0”

Main crystal size: 0.8 × 0.3 cm = 0.3” × 0.1”

Calcite fluorescent long & short UV

With handwritten note from the Folch Collection

Sold
Pyrargyrite on Quartz

RF57K9: Well developed small crystal group with little recrystallizations on the face’s surface. On a white Quartz matrix.
Hiendelaencina, Guadalajara  Spain

Specimen size: 2.0 × 1.1 × 1.0 cm = 0.8” × 0.4” × 0.4”

Main crystal size: 0.6 × 0.6 cm = 0.2” × 0.2”

With handwritten note from the Folch Collection


Pyrargyrite on Quartz.
Sold

PORTUGAL


Twined Cassiterite
Twined Cassiterite.

RX14W6: Group of twinned dipyramidal crystals that are very bright with yellowish brown reflections and transparencies and show fine horizontal striations. We especially note the size of the main crystal which is very big compared with most of the samples from Panasqueira.
Minas da Panasqueira / level 2, Aldeia de Sγo Francisco de Assis, Covilhγ, Castelo Branco, Centro  Portugal

Specimen size: 3.5 × 2.6 × 2 cm = 1.4” × 1.0” × 0.8”

Main crystal size: 2.6 × 2.3 cm = 1.0” × 0.9”

With handwritten note from the Folch Collection


Sold
Cassiterite with Quartz, Dolomite and Tourmaline

RE60V1: Twinned crystals of Cassiterite. They are translucent and bright and are on matrix, with Quartz, Dolomite and small acicular crystals of tourmaline (Schorl-Dravite)
Minas da Panasqueira, Aldeia de Sγo Francisco de Assis, Covilhγ, Castelo Branco, Centro  Portugal (±1972)

Specimen size: 5.8 × 4.1 × 4.5 cm = 2.3” × 1.6” × 1.8”

Main crystal size: 0.5 × 0.5 cm = 0.2” × 0.2”

With handwritten note from the Folch Collection


Cassiterite with Quartz, Dolomite and Tourmaline. Cassiterite with Quartz, Dolomite and Tourmaline.
Sold
Arsenopyrite
Arsenopyrite. Arsenopyrite.
Arsenopyrite

RZ46V1: Parallel growths of short prismatic crystals of Arsenopyrite. They are very bright and are slightly coated by small crystals of Siderite and Muscovite.
The sample is with a card from the Folch collection (number 9698) that we'll send to the buyer.
Minas da Panasqueira, Aldeia de Sγo Francisco de Assis, Covilhγ, Castelo Branco, Centro  Portugal (±1966)

Specimen size: 8.5 × 7 × 4.1 cm = 3.3” × 2.8” × 1.6”

Main crystal size: 3 × 2.3 cm = 1.2” × 0.9”

With handwritten note & record from the Folch Collection


Sold
Fluorapatite with Muscovite

RX16K9: Thick tabular crystal group, one of them clearly dominant. Excellent color, transparency and brilliance. On a small Muscovite crystal matrix.
Minas da Panasqueira / level 2, Aldeia de Sγo Francisco de Assis, Covilhγ, Castelo Branco, Centro  Portugal

Specimen size: 3.8 × 2.7 × 2.7 cm = 1.5” × 1.1” × 1.1”

With handwritten note from the Folch Collection

Zoned fluorescence long & short UV

Fluorapatite with Muscovite. Front
Front
Fluorapatite with Muscovite. Rear
Rear
Sold
Fluorapatite with Muscovite
Fluorapatite with Muscovite. Fluorapatite with Muscovite.

RF66L9: This sample is a rarity. A very curious combination in one piece of green and blue to violet Fluorapatite crystals. With some slight pyramidal faces less transparent than the prism faces. Crystals are on a matrix.
The piece is accompanied by a handwritten label from the Folch collection.
Minas da Panasqueira / level 2, Aldeia de Sγo Francisco de Assis, Covilhγ, Castelo Branco, Centro  Portugal

Specimen size: 5.4 × 4.8 × 2.3 cm = 2.1” × 1.9” × 0.9”

Main crystal size: 1.3 × 1.3 cm = 0.5” × 0.5”

With handwritten note from the Folch Collection

Intense zoned fluorescence long & short UV

Sold
Ferberite with Muscovite

RG76V1: Parallel growths of flattened crystals. They are very bright, with sharp terminations and are partially coated by Muscovite.
Minas da Panasqueira, Aldeia de Sγo Francisco de Assis, Covilhγ, Castelo Branco, Centro  Portugal (±1968)

Specimen size: 7.3 × 5.6 × 2.5 cm = 2.9” × 2.2” × 1.0”

With handwritten note from the Folch Collection


Ferberite with Muscovite. Front
Front
Ferberite with Muscovite. Side
Side
Sold
Ferberite with Siderite
Ferberite with Siderite. Front
Front
Ferberite with Siderite. Side
Side

RA76T5: Parallel growth of flattened prismatic crystals with very well defined faces and edges and partially coated by small lenticular crystals of Siderite.
Minas da Panasqueira, Aldeia de Sγo Francisco de Assis, Covilhγ, Castelo Branco, Centro  Portugal (±1966)

Specimen size: 7.3 × 4.8 × 3.8 cm = 2.9” × 1.9” × 1.5”

Main crystal size: 3.9 × 3.5 cm = 1.5” × 1.4”

With handwritten note from the Folch Collection


Sold
Ferberite with Siderite

RH66H7: Parallel group of prismatic crystals well defined, bright and having well defined terminations. The matrix is formed by tabular crystals of Siderite.On the back side is a minor crystal, probable Scheelite, visible with the UV light. Curiously, Scheelite is a scarce species at the Panasqueira Mine.
Minas da Panasqueira / level 2, Aldeia de Sγo Francisco de Assis, Covilhγ, Castelo Branco, Centro  Portugal

Specimen size: 4.8 × 3.6 × 2.6 cm = 1.9” × 1.4” × 1.0”

Main crystal size: 4.8 × 2.2 cm = 1.9” × 0.9”

With handwritten note from the Folch Collection

Scheelite fluorescent long & short UV

Ferberite with Siderite. Front
Front
Ferberite with Siderite. Top
Top
Order
Ferberite with Pyrite and Quartz
Ferberite with Pyrite and Quartz. Front
Front
Ferberite with Pyrite and Quartz. Rear
Rear

RM46Q5: Group of crystals of Ferberite, some of them doubly terminated, with very well defined forms and with pyramidal faces, rare on the samples from Panasqueira. With Quartz and small coatings of Pyrite.
Minas da Panasqueira / level 2, Aldeia de Sγo Francisco de Assis, Covilhγ, Castelo Branco, Centro  Portugal (±1965)

Specimen size: 7.5 × 6.5 × 4.4 cm = 3.0” × 2.6” × 1.7”

Main crystal size: 5.2 × 2.8 cm = 2.0” × 1.1”

With handwritten note from the Folch Collection


Sold
Sphalerite with Chalcopyrite, Siderite, Pyrite and Muscovite

RB36M9: Parallel growths of crystals of globular aspect but with clearly defined faces. The Sphalerite is with lenticular crystals of Siderite, Chalcopyrite and small crystals of Pyrite and Muscovite.
Minas da Panasqueira / level 1, Aldeia de Sγo Francisco de Assis, Covilhγ, Castelo Branco, Centro  Portugal (±1967)

Specimen size: 5.8 × 4.5 × 5.2 cm = 2.3” × 1.8” × 2.0”

With handwritten note from the Folch Collection


Sphalerite with Chalcopyrite, Siderite, Pyrite and Muscovite. Front
Front
Sphalerite with Chalcopyrite, Siderite, Pyrite and Muscovite. Rear
Rear
Order
Marcasite-Arsenopyrite with Quartz and Siderite
Marcasite-Arsenopyrite with Quartz and Siderite. Front
Front
Marcasite-Arsenopyrite with Quartz and Siderite. Rear
Rear

RF16M9: Very well defined and bright "cockscomb" growths of Marcasite with Quartz crystals partially covered by small lenticular crystals of Siderite and with Pyrite.
Minas da Panasqueira / level 2, Aldeia de Sγo Francisco de Assis, Covilhγ, Castelo Branco, Centro  Portugal (±1982)

Specimen size: 6.6 × 5.7 × 5 cm = 2.6” × 2.2” × 2.0”

Main crystal size: 2.8 × 2.2 cm = 1.1” × 0.9”

With handwritten note from the Folch Collection


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Cassiterite

RH76K9: Cassiterite crystal with sharp faces and edges with a considerable size an twinned. This specimen comes from a little known Portuguese locality.
Boticas, Chaves  Portugal

Specimen size: 4.2 × 2.8 × 2.5 cm = 1.7” × 1.1” × 1.0”

With handwritten note from the Folch Collection


Cassiterite. Front
Front
Cassiterite. Side
Side
Order

EUROPE (EXCL. SPAIN AND PORTUGAL)


Austria

Orthoclase (adularia) with Clinochlore
Orthoclase (adularia) with Clinochlore.
Orthoclase (adularia) with Clinochlore. Orthoclase (adularia) with Clinochlore.

RD71M0: Two very sharp and twinned Orthoclase (adularia) crystals, with an excellent color and brilliance, with some inclusions of Clinochlore. On a matrix covered by small adularia and Quartz crystals.
The handwritten Folch label states that it was bought directly from a mountain guide in 1957.

Grossvenediger, Hohen Tauern, Salzburg  Austria (±1957)

Specimen size: 14.5 × 11.5 × 11 cm = 5.7” × 4.5” × 4.3”

Main crystal size: 4.3 × 4.3 cm = 1.7” × 1.7”

With handwritten note from the Folch Collection


Order

Czech Republic

Pyrargyrite with Calcite

RF16V5: Crystals of Pyrargyrite in a vein filled by acute scalenohedral crystals of Calcite on a matrix of massive Pyrargyrite. A classic of Czech mineralogy.
The sample is with a label that we'll send to the buyer.
Prνbram, Bohemia  Czech Republic

Specimen size: 7 × 4.3 × 2.6 cm = 2.8” × 1.7” × 1.0”

Main crystal size: 1 × 0.3 cm = 0.4” × 0.1”

With handwritten note from the Folch Collection

Calcite fluorescent long & short UV

Pyrargyrite with Calcite. Pyrargyrite with Calcite.
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France

Rhodochrosite
Rhodochrosite. Rhodochrosite.

RD10T8: Small rhombohedral crystals of Rhodochrosite on matrix. They have color zoning, intense pink in their centers and transparent near colorless transparent edges. They are from a French locality uncommon in mineral collections.
Aderville, Louron Valley, Hautes-Pyrιnιes  France

Specimen size: 9.6 × 6.2 × 6.5 cm = 3.8” × 2.4” × 2.6”

Main crystal size: 0.2 × 0.1 cm = 0.1” × 0.0”

With handwritten note from the Folch Collection


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Germany

Ferberite

RG56R6: A classic sample for European mineralogy. As with most of the samples from Zinnwald, it is a single crystal with very well defined faces and edges, and very fine striations.
Zinnwald, Erzgebirge, Bohemia  Germany

Specimen size: 4.7 × 2.9 × 2.4 cm = 1.9” × 1.1” × 0.9”

With handwritten note from the Folch Collection


Ferberite.
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Ferberite
Ferberite.

RH96R6: A classic sample for European mineralogy. As with most of the samples from Zinnwald, it is a single crystal with very well defined faces and edges, and very fine striations.
Zinnwald, Erzgebirge, Bohemia  Germany

Specimen size: 5.4 × 3.9 × 2.4 cm = 2.1” × 1.5” × 0.9”

With handwritten note from the Folch Collection


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Phosphophyllite with Vivianite and Quartz
Phosphophyllite with Vivianite and Quartz

MC96V0: From the type locality for the species. Groups of very acute dipyramidal crystals with sharp faces and edges. They are transparent, with a slightly green color and one of them with a nice and neat butterfly twin. They are on a matrix of Quartz with blue Vivianite. A German classic.
Hagendorf, Waidhaus, Oberpfδlzer Wald, Bavaria  Germany (±1959)

Specimen size: 7.6 × 7.5 × 6.7 cm = 3.0” × 3.0” × 2.6”

Main crystal size: 0.2 × 0.1 cm = 0.1” × 0.0”

With handwritten note & record from the Folch Collection

Type locality

Phosphophyllite with Vivianite and Quartz. Phosphophyllite with Vivianite and Quartz.
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Rhodochrosite
Rhodochrosite. Rhodochrosite.
Rhodochrosite

RX47T5: Groups of very acute scalenohedral crystals, some of them doubly terminated, with curvatures on the faces and edges. They are transparent, have a deep red color and are on a limonite matrix. A sample from one of the great classic localities for the species.
It is with an old handwritten label that we'll send to the buyer.
Wolf Mine, Herdorf, Siegerland, Rhineland-Palatinate  Germany

Specimen size: 11.3 × 8.5 × 5 cm = 4.4” × 3.3” × 2.0”

Main crystal size: 0.5 × 0.3 cm = 0.2” × 0.1”

With handwritten note from the Folch Collection


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Greenland

Ralstonite

RB11V1: The sample is from the type locality for the species. An excellent miniature of this rare fluoride, with very well defined crystals of very good size for the species, and extraordinarily bright.
Ivigtut, Arsuk Firth, Arsuk, Kitaa  Greenland

Specimen size: 2.8 × 2 × 1.3 cm = 1.1” × 0.8” × 0.5”

Main crystal size: 0.1 × 0.1 cm = 0.0” × 0.0”

With handwritten note from the Folch Collection

Localidad tipo

Ralstonite.
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Italy

Anglesite on Galena
Anglesite on Galena.
Anglesite on Galena.
Anglesite on Galena
To see a larger 3D image please
click here or on the image

RF89G6: The locality is really a classic. Crystals, occupying a cavity in a Galena matrix, have sharp faces and edges and the main one has a considerable size.
Monteponi Mine, Iglesias, Iglesiente, Cagliari, Sardegna  Italy

Specimen size: 6.8 × 6.3 × 3.9 cm = 2.7” × 2.5” × 1.5”

Main crystal size: 2.7 × 1.7 cm = 1.1” × 0.7”

With handwritten note & record from the Folch Collection

Intense fluorescence long & short UV

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Celestine with Sulfur

RA96T8: Groups of elongated crystals of Celestine with a snowy white color, very bright and with completely transparent areas. They are on a matrix of Sulfur.
Agrigento, Sicilia  Italy

Specimen size: 12 × 10.8 × 6.5 cm = 4.7” × 4.3” × 2.6”

Main crystal size: 1.5 × 0.6 cm = 0.6” × 0.2”

With handwritten note from the Folch Collection

Fluorescent long & short UV

Celestine with Sulfur. Celestine with Sulfur.
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Rumania

Rhodochrosite with Quartz
Rhodochrosite with Quartz.

RF13P8: Spheroidal growths of small rhombohedral crystals of pale pink Rhodochrosite crystals on a matrix of Quartz with two generations of growth, a first one with botryoidal growths of small crystals and a second forming a very aerial group of milky Quartz crystals very well defined and with curvatures of their faces and edges.
Cavnic, Maramures  Rumania

Specimen size: 8.3 × 6.9 × 3.3 cm = 3.3” × 2.7” × 1.3”


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Slovenia

Cinnabar
Cinnabar

RR64V0: An excellent sample from one of the most classic localities for the species but rarely appeared there in significant sharp crystals. The small crystals of this piece are morphologically complex, with the dominant faces of the rhombohedron. A lot of them are individual and transparent, very bright and on matrix. An European classic.
Idria Mine, Idria  Slovenia

Specimen size: 8.4 × 6.8 × 4.4 cm = 3.3” × 2.7” × 1.7”

Main crystal size: 0.1 × 0.1 cm = 0.0” × 0.0”

With handwritten note from the Folch Collection


Cinnabar. Cinnabar.
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Sweden

Berzeliite with Calcite and Hausmannite
Berzeliite with Calcite and Hausmannite. Front
Front
Berzeliite with Calcite and Hausmannite. Top
Top
Berzeliite with Calcite and Hausmannite

RY13T5: Deep yellow crystalline aggregates of this very rare arsenate that contrasts with white Calcite on the matrix.
The sample comes from the type locality and it is with an old label of Dr. F. Krantz, from Bonn, that we'll send to the buyer.
Langban, Filipstad, Vδrmland  Sweden (±1962)

Specimen size: 8.2 × 5.2 × 3.7 cm = 3.2” × 2.0” × 1.5”

With handwritten note & record from the Folch Collection

Type locality

Calcite extremely fluorescent long & short UV

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Cobaltite with Pyrrhotite
Cobaltite with Pyrrhotite

RJ76M2: This esthetic sample shows three sharp and brilliant Cobaltite crystals, one of them with a good size, with dominant forms of the cube and pyritohedron. All are included in a massive Pyrrhotite matrix. We found that the crystals are not reattached to the matrix but are included in it in a natural way. With the specimen we will send the Folch collection card Nr. 11.165.
Hakansboda, Lindesberg, Vδstmanland  Sweden

Specimen size: 6 × 4.3 × 2.8 cm = 2.4” × 1.7” × 1.1”

Main crystal size: 0.5 × 0.5 cm = 0.2” × 0.2”

With handwritten note & record from the Folch Collection


Cobaltite with Pyrrhotite. Cobaltite with Pyrrhotite.
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Switzerland

Smoky Quartz
Smoky Quartz.

RG61M0: Group of right-handed smoky Quartz crystals, one of them clearly dominant, totally transparent, and with a deep color and excellent luster.
Val Giuf, Tavetsch, Grisons  Switzerland

Specimen size: 5 × 2.9 × 3.2 cm = 2.0” × 1.1” × 1.3”

Main crystal size: 3.9 × 1.8 cm = 1.5” × 0.7”

With handwritten note from the Folch Collection


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Quartz with Chlorite

RC6S7: Aggregate of very bright and transparent crystals with chloritized surfaces near the terminal areas.
Bristenstock Mountain, Bristen, Reuss Valley, Uri  Switzerland (±1948)

Specimen size: 6.9 × 4.6 × 5.9 cm = 2.7” × 1.8” × 2.3”

Main crystal size: 3.2 × 1.5 cm = 1.3” × 0.6”

With handwritten note from the Folch Collection


Quartz with Chlorite. Front
Front
Quartz with Chlorite. Top
Top
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Quartz with Chlorite and Albite
Quartz with Chlorite and Albite. Front
Front
Quartz with Chlorite and Albite. Top
Top

RT14T5: A single crystal of Quartz with very well defined faces and edges, with very small inclusions of Chlorite and a small matrix of Albite.
Grimsel, Hasli Valley, Bern  Switzerland (±1948)

Specimen size: 8.3 × 3.4 × 3 cm = 3.3” × 1.3” × 1.2”

Main crystal size: 8.3 × 2.8 cm = 3.3” × 1.1”

With handwritten note from the Folch Collection


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Doubly terminated Quartz with Chlorite

RE14M5: Doubly terminated floater crystal with neat phantom growths underlined by Chlorite inclusions, especially on terminations.
Tavetsch, Vorderrhein Valley, Grisons  Switzerland

Specimen size: 6 × 2.1 × 1.7 cm = 2.4” × 0.8” × 0.7”

With handwritten note from the Folch Collection


Doubly terminated Quartz with Chlorite. Front
Front
Doubly terminated Quartz with Chlorite. Side
Side
Doubly terminated Quartz with Chlorite. Side
Side
Order
Doubly terminated Quartz
Doubly terminated Quartz. Font
Font
Doubly terminated Quartz. Rear
Rear

RV56K0: A floater group of doubly terminated crystals with parallel growths. From the original label we deduce it was mined, more or less, around 1980.
Etzlithal, Uri  Switzerland (±1980)

Specimen size: 6.2 × 3.9 × 3.2 cm = 2.4” × 1.5” × 1.3”

Main crystal size: 5.8 × 2.1 cm = 2.3” × 0.8”

With handwritten note from the Folch Collection


Order
Quartz

RJ14M3: A complete floater Quartz crystal whose faces totally consist of curious dissolution structures. Totally transparent with an excellent brilliance.
The piece is accompanied by a handwritten label with notes from Mr. Folch.
Rhτne Glacier, Furka, Furka Pass area, Valais  Switzerland

Specimen size: 4 × 2.4 × 1.9 cm = 1.6” × 0.9” × 0.7”

With handwritten note from the Folch Collection


Quartz. Front
Front
Quartz. Rear
Rear
Sold
Doubly terminated Quartz faden with Albite
Doubly terminated Quartz faden with Albite.

To see a larger 3D image please
click here or on the image

RB97H0: Parallel growth of doubly terminated crystals with a very evident “faden”. On the base of the piece there is a snowy white crystal of adularia, very bright. The label has the note: Com (comprado / acquired) Sulzbach. Zόrich 1947.
Bristenstock Mountain, Bristen, Reuss Valley, Uri  Switzerland (±1947)

Specimen size: 11.8 × 6.7 × 5.4 cm = 4.6” × 2.6” × 2.1”

With handwritten note from the Folch Collection


Order
Heulandite with Scolecite

RP10T5: Small isolated crystals of Heulandite that are translucent and very bright, with acicular crystals of Scolecite. The sample is from a very well known classic Swiss locality where zeolites are rare.
Val Giuf, Tavetsch, Grisons  Switzerland

Specimen size: 7.9 × 4.7 × 2.2 cm = 3.1” × 1.9” × 0.9”

Main crystal size: 0.4 × 0.2 cm = 0.2” × 0.1”

With handwritten note from the Folch Collection


Heulandite with Scolecite. Heulandite with Scolecite.
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Quartz with Titanite and Chlorite
Quartz with Titanite and Chlorite. Quartz with Titanite and Chlorite.

RM64R0: Very sharp thin laminar light cream-colored crystals of Titanite on a group of deeply chloritized Quartz crystals partially coated by small Orthoclase (adularia) crystals. The locality is considered an European classic.
Bδchli glacier, Bδchli Valley, Grimsel, Bern  Switzerland (±1947)

Specimen size: 8.8 × 5 × 2.4 cm = 3.5” × 2.0” × 0.9”

Main crystal size: 1 × 0.5 cm = 0.4” × 0.2”

With handwritten note from the Folch Collection


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Titanite with Clinochlore

RV63M0: Excellent miniature. Twinned crystal with a good color and brilliance. On an Orthoclase (adularia) matrix partially covered by Clinochlore.
Druntobel, Sedrun, Tavetsch, Grisons  Switzerland

Specimen size: 2.5 × 1.9 × 2 cm = 1.0” × 0.7” × 0.8”

Main crystal size: 1.2 × 0.4 cm = 0.5” × 0.2”

With handwritten note from the Folch Collection


Titanite with Clinochlore.
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Epidote
Epidote. Epidote.

RH86T8: Transparent crystals of Epidote on matrix, many of them doubly terminated, with an intense green color and very bright. An excellent Swiss classic.
Pollux Mountain, Zermatt, Matter Valley, Valais  Switzerland (±1950)

Specimen size: 9.2 × 8.4 × 4.3 cm = 3.6” × 3.3” × 1.7”

Main crystal size: 1.4 × 0.6 cm = 0.6” × 0.2”

With handwritten note from the Folch Collection


Order
Epidote
Epidote

RR56Q5: Parallel growths with very well defined faces and edges. The piece is from an uncommon locality. On Folch’s autographed label it is mentioned that it was acquired in Switzerland in 1948.
Rotlaui, Guttannen, Hasli Valley, Bern  Switzerland (±1948)

Specimen size: 6.6 × 3.9 × 1.8 cm = 2.6” × 1.5” × 0.7”

Main crystal size: 4.2 × 2.2 cm = 1.7” × 0.9”

With handwritten note & record from the Folch Collection


Epidote. Front
Front
Epidote. Rear
Rear
Order
Epidote
Epidote. Front
Front
Epidote. Top
Top

RJ12P8: A Swiss classic with two very well marked phases of crystallization, the first one as a basic single prism having very well defined faces and edges and the second as a polycrystalline termination with a parallel growth of transparent and bright crystals. The quality of the sample is good for the locality.
Pollux Mountain, Zermatt, Matter Valley, Valais  Switzerland (1952)

Specimen size: 3.2 × 2.3 × 1.4 cm = 1.3” × 0.9” × 0.6”

With handwritten note from the Folch Collection


Order
Epidote

RH63N4: From a very uncommon locality, an Alpine classic. The crystal, a floater, has a termination of partially chloritized faces and the other healed. Good color and luster.
Pollux Mountain, Zermatt, Matter Valley, Valais  Switzerland (1952)

Specimen size: 3.4 × 2.6 × 1.5 cm = 1.3” × 1.0” × 0.6”

With handwritten note from the Folch Collection


Epidote. Front
Front
Epidote. Rear
Rear
Order
Calcite (papierspat)
Calcite (papierspat). Front
Front
Calcite (papierspat). Rear
Rear

RV12L9: Totally flattened Calcite crystal (“papierspat”) with pyramid shape and very marked striations. The specimen is from a classic locality for this kind of Calcite crystal.
The piece is accompanied by a handwritten label from the Folch collection.
Maderannertal  Switzerland (±1947)

Specimen size: 5.2 × 4.5 × 0.8 cm = 2.0” × 1.8” × 0.3”

With handwritten note from the Folch Collection

Minor fluorescence long & short UV

Order
Axinite-(Fe) with Albite
Axinite-(Fe) with Albite

RY63M0: Very flattened and well defined Axinite-(Fe) crystals, with good color and brilliance. On matrix. In the handwritten Folch label one can read that it was a gift of A. Sulzbach, from Zurich (Switzerland) made in 1950. It is accompanied by the card of the Folch collection (Nr. 4704).

Scσpi Mountain, Medel Valley, Grisons  Switzerland (±1950)

Specimen size: 4 × 2.9 × 2.4 cm = 1.6” × 1.1” × 0.9”

Main crystal size: 1.4 × 1 cm = 0.6” × 0.4”

With handwritten note & record from the Folch Collection


Axinite-(Fe) with Albite. Front
Front
Axinite-(Fe) with Albite. Top
Top
Sold
Orthoclase (Adularia) with Chlorite
Orthoclase (Adularia) with Chlorite.

RE16K4: Manebach twin of two crystals with selective inclusions of Chlorite: some of the faces have the inclusions while others are completely free of them.
Binntal, Wallis  Switzerland (1949)

Specimen size: 2.6 × 2.4 × 2.4 cm = 1.0” × 0.9” × 0.9”

Main crystal size: 1.8 × 1.8 cm = 0.7” × 0.7”

With handwritten note from the Folch Collection

Minor fluorescence short UV

Order
Orthoclase (Adularia) with Chlorite and Hematite

RG14K4: Parallel growth of sharp crystals of very well defined faces and edges, clean, translucent and bright on one of the sides of the sample and with Chlorite inclusions on the opposite.
Maderanertal, Uri  Switzerland

Specimen size: 3.2 × 3 × 2.4 cm = 1.3” × 1.2” × 0.9”

Main crystal size: 2.1 × 1.7 cm = 0.8” × 0.7”

With handwritten note from the Folch Collection

Minor fluorescence short UV

Orthoclase (Adularia) with Chlorite and Hematite. Front
Front
Orthoclase (Adularia) with Chlorite and Hematite. Side
Side
Sold
Orthoclase (adularia) with chlorite and Hematite
Orthoclase (adularia) with chlorite and Hematite. Front
Front
Orthoclase (adularia) with chlorite and Hematite. Rear
Rear

RF16K4: Parallel growths of adularia crystals of tabular appearance, very rich in chlorite inclusions and also with very bright Hematite inclusions.
Maderanertal, Uri  Switzerland

Specimen size: 4.3 × 3.4 × 2.8 cm = 1.7” × 1.3” × 1.1”

Main crystal size: 2.2 × 1.7 cm = 0.9” × 0.7”

With handwritten note from the Folch Collection

Minor fluorescence short UV

Order
Orthoclase (Adular)
Orthoclase (Adular)

RP96J3: The crystal is considerably transparent and has very well defined faces and edges. It is only partially covered by Chlorite.
The specimen is noted as purchased in 1949 and it is with a manuscript label of Folch we’ll send to the buyer.
Gerenthal, Oberwallis  Switzerland (±1949)

Specimen size: 5.7 × 5 × 2.8 cm = 2.2” × 2.0” × 1.1”

With handwritten note & record from the Folch Collection

Minor fluorescence short UV

Orthoclase (Adular). Front
Front
Orthoclase (Adular). Side
Side
Sold
Orthoclase (adularia)
Orthoclase (adularia). Front
Front
Orthoclase (adularia). Rear
Rear
Orthoclase (adularia). Top
Top

RM6G2: A classic alpine sample (is the variety adularia). A Floater, more clear than usual with a very intense vitreous luster.
Cavradi, Curnera, Tavetsch, Grisons  Switzerland

Specimen size: 5.8 × 4 × 3.5 cm = 2.3” × 1.6” × 1.4”

With handwritten note from the Folch Collection

Fluorescent short UV

Sold

United Kingdom

Cuprite
Cuprite

RT86M9: A classic from a really, really, classic locality. It is a group on matrix of cubic crystals that, despite the years, have retained good luster and color.
The sample was initially in the Sir Arthur Russell collection, whose label we will deliver to the buyer.
Wheal Phoenix, Linkinhorne, Liskeard, Cornwall, England  United Kingdom

Specimen size: 3.1 × 2 × 1.6 cm = 1.2” × 0.8” × 0.6”

With handwritten note from the Folch Collection


Cuprite.
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Cerussite (jackstraw)
Cerussite (jackstraw).

RM96I8: The group, on matrix, is of fibrous crystals of snowy-white color and an extraordinary silky luster. This “jackstraw” is a rarity, and it is documented as acquired by Sir Arthur Russell on 1926.
Pentire Glaze Mine, St. Minver, Cornwall, England  United Kingdom (±1926)

Specimen size: 4.4 × 4.2 × 2 cm = 1.7” × 1.7” × 0.8”

Main crystal size: 1.6 × 0.5 cm = 0.6” × 0.2”

With handwritten note from the Folch Collection

Fluorescent short UV

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FSU


Crocoite with Vauquelinite and Quartz
Crocoite with Vauquelinite and Quartz

RD7T8: Sharp prismatic crystals of Crocoite on matrix. They are bright and with an intense color, with small Quartz crystals and growths of yellow Vauquelinite. An excellent European classic from the type locality for the species.
Berezovsk Mines, Berezovskii, Ekaterinburg, Ekaterinburgskaya Oblast, Urals  Russia

Specimen size: 11.5 × 4.3 × 2.6 cm = 4.5” × 1.7” × 1.0”

Main crystal size: 1.1 × 0.2 cm = 0.4” × 0.1”

With handwritten note from the Folch Collection

Type locality

Crocoite with Vauquelinite and Quartz. Crocoite with Vauquelinite and Quartz.
Order

MOROCCO


Erythrite
Erythrite. Erythrite.

RV59W6: Group of very sharp translucent crystals that are very bright with a really deep color and fill a vug on a matrix of metallic sulfides.
Bou Azzer area, Tazenakht, Ouarzazate  Morocco (±1979)

Specimen size: 4.5 × 4.3 × 2.9 cm = 1.8” × 1.7” × 1.1”

Main crystal size: 0.6 × 0.4 cm = 0.2” × 0.2”

With handwritten note from the Folch Collection


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Azurite
Azurite

RD16I8: A curious prismatic crystal with curved faces and edges, very visible and defined. Color and luster are excellent. One of the first specimens to arrive in Europe from Touissit, a practically unknown mine at that time.
Touissit, Oujda  Morocco (±1979)

Specimen size: 5.2 × 2.8 × 1.5 cm = 2.0” × 1.1” × 0.6”

With handwritten note & record from the Folch Collection


Azurite. Front
Front
Azurite. Rear
Rear
Sold
Malachite with Quartz
Malachite with Quartz. Malachite with Quartz.

RG14V0: Groups of primary Malachite crystals. They have simple and very well defined forms and are very bright. The groups are in matrix with small crystals of Quartz. It is from an old find, never repeated later, in spite of the fact that the locality has been repeatedly revisited in recent years.
Irhoud Mine, Safi, Doukkala-Abda  Morocco (±1979)

Specimen size: 8.2 × 7.8 × 5.2 cm = 3.2” × 3.1” × 2.0”

Main crystal size: 0.5 × 0.4 cm = 0.2” × 0.2”

With handwritten note from the Folch Collection


Sold

AFRICA


Smithsonite with Mimetite

RP86V5: Small acute rhombohedral crystals of Smithsonite with polycrystalline growths on their faces, a clear green color, with aggregates of yellow Mimetite and on matrix. The morphology of both species proves their true locality which in the autographed label of Folch appears as Tsumeb and not Berg Aukas. This confusion was very common in the past.
The sample is with a label that we'll send to the buyer.
Berg Aukas, Grootfontein  Namibia

Specimen size: 10.8 × 10.2 × 5.1 cm = 4.3” × 4.0” × 2.0”

Main crystal size: 0.2 × 0.1 cm = 0.1” × 0.0”

With handwritten note from the Folch Collection


Smithsonite with Mimetite. Smithsonite with Mimetite.
Order
Rhodochrosite with Gypsum
Rhodochrosite with Gypsum. Rhodochrosite with Gypsum.

RG67K9: Rhombohedral Rhodochrosite crystals. This habit is very unusual in the N’Chwanning Mine, excellent colour and brilliance. On a rich laminar Gypsum matrix.
N'Chwaning I Mine, Kuruman, Kalahari  South Africa (±1976)

Specimen size: 8.6 × 6.7 × 3.8 cm = 3.4” × 2.6” × 1.5”

Main crystal size: 0.3 × 0.3 cm = 0.1” × 0.1”

With handwritten note from the Folch Collection


Sold

Tsumeb

Dioptase with Calcite

RG16V5: Doubly terminated crystals with very intense color and luster and on Calcite matrix.
The sample is with a label that we'll send to the buyer.
Tsumeb Mine, Tsumeb  Namibia

Specimen size: 8 × 4.2 × 2 cm = 3.1” × 1.7” × 0.8”

Main crystal size: 0.7 × 0.3 cm = 0.3” × 0.1”

With handwritten note from the Folch Collection

Calcite fluorescent short UV & low fluorescence long UV

Dioptase with Calcite. Dioptase with Calcite.
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Smithsonite
Smithsonite. Smithsonite.

RJ96V5: Irregular aggregate of small crystals with complex forms. They are very bright with a yellowish green color and on matrix.
The sample is with a label that we'll send to the buyer.
Tsumeb Mine, Tsumeb  Namibia

Specimen size: 8.4 × 6 × 3.3 cm = 3.3” × 2.4” × 1.3”

Main crystal size: 0.2 × 0.2 cm = 0.1” × 0.1”

With handwritten note from the Folch Collection


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Smithsonite with Cuprite

RP96V0: Group of Smithsonite crystals formed by a dominant flattened rhombohedron and poorly developed prismatic faces. The crystals are bright, translucent to transparent, they have a very intense yellow color and they are on matrix with Calcite and small crystals of Cuprite variety Chalcotrichite.
Tsumeb Mine, Tsumeb  Namibia (±1973)

Specimen size: 5.2 × 4.7 × 3.6 cm = 2.0” × 1.9” × 1.4”

Main crystal size: 0.4 × 0.4 cm = 0.2” × 0.2”

With handwritten note from the Folch Collection


Smithsonite with Cuprite. Smithsonite with Cuprite.
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Smithsonite with Cuprite
Smithsonite with Cuprite. Smithsonite with Cuprite.

RP46Q5: A group of crystals with very well defined faces and edges and clear green color, some of them with red inclusions of Cuprite. They are bright and on matrix.
Tsumeb Mine, Tsumeb  Namibia (±1973)

Specimen size: 5.6 × 4.8 × 4.4 cm = 2.2” × 1.9” × 1.7”

Main crystal size: 0.5 × 0.5 cm = 0.2” × 0.2”

With handwritten note from the Folch Collection


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Smithsonite with Cuprite inclusions

RE66K9: Druse, on matrix, of Smithsonite crystals, that look rounded. They are complex but dominated by the rhombohedron. Very atractive green-yellowish color enhanced by red Cuprite inclusions.
Tsumeb Mine, Tsumeb  Namibia (07/1973)

Specimen size: 8.0 × 7.2 × 0.7 cm = 3.1” × 2.8” × 0.3”

Main crystal size: 0.4 × 0.3 cm = 0.2” × 0.1”

With handwritten note from the Folch Collection


Smithsonite with Cuprite inclusions. Smithsonite with Cuprite inclusions.
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Smithsonite with Cuprite inclusions
Smithsonite with Cuprite inclusions. Smithsonite with Cuprite inclusions.

RD86K9: Druse, on matrix, of Smithsonite crystals, that look rounded. They are complex but dominated by the rhombohedron. Very atractive green-yellowish color enhanced by red Cuprite inclusions.
Tsumeb Mine, Tsumeb  Namibia (07/1973)

Specimen size: 7.8 × 7.2 × 0.7 cm = 3.1” × 2.8” × 0.3”

Main crystal size: 0.3 × 0.3 cm = 0.1” × 0.1”

With handwritten note from the Folch Collection


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Smithsonite with Galena

RJ47T8: Druse of rhombohedral crystals of Smithsonite of pale pink color, more isolated and aerial than usual with Tsumeb samples. With the Smithsonite is a very well defined cuboctahedral crystal of Galena partially coated by Smithsonite.
Tsumeb Mine, Tsumeb  Namibia

Specimen size: 10.4 × 6.5 × 4.5 cm = 4.1” × 2.6” × 1.8”

Main crystal size: 0.5 × 0.4 cm = 0.2” × 0.2”

With handwritten note from the Folch Collection


Smithsonite with Galena. Smithsonite with Galena.
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Smithsonite
Smithsonite. Front
Front
Smithsonite. Side
Side
Smithsonite.

RY27I7: Groups and isolated rhombohedral crystals of Smithsonite, yellow and shiny, that occupy a vug on a rocky matrix. A note on the label says it was acquired by Sr. Salada, July 25, 1973.
Tsumeb Mine, Tsumeb  Namibia (±1973)

Specimen size: 11 × 10.4 × 7.6 cm = 4.3” × 4.1” × 3.0”

With handwritten note from the Folch Collection

Fluorescence short UV & low fluorescence long UV

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Cuprian Smithsonite with Calcite

RR48H0: A group with rhombohedral crystals of considerable size and an excellent intense green color, on a rocky matrix that make the specimen very aerial.
Tsumeb Mine, Tsumeb  Namibia (±1973)

Specimen size: 6.4 × 4.6 × 2.7 cm = 2.5” × 1.8” × 1.1”

Main crystal size: 1.5 × 1.2 cm = 0.6” × 0.5”

With handwritten note from the Folch Collection


Cuprian Smithsonite with Calcite. Cuprian Smithsonite with Calcite.
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Malachite
Malachite. Malachite.

RY96G6: An old sample, very attractive, in which the Malachite forms crystals of curved edges and faces giving them a nearly spherical shape. The esthetics of the piece is enhanced by the strong contrast of color between the Malachite and the lighter matrix.
Tsumeb Mine, Tsumeb  Namibia (±1973)

Specimen size: 8.2 × 6.3 × 4.8 cm = 3.2” × 2.5” × 1.9”

Main crystal size: 0.4 × 0.2 cm = 0.2” × 0.1”

With handwritten note from the Folch Collection

Calcite intense fluorescence short UV

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Azurite

FZ6K0: A floater group of two flattened prismatic crystals, of thick tabular appearance and doubly terminated, that have very bright and well defined faces and edges. Excellent miniature.
Tsumeb Mine, Tsumeb  Namibia

Specimen size: 2.5 × 2.1 × 1.4 cm = 1.0” × 0.8” × 0.6”

Main crystal size: 1.8 × 1.6 cm = 0.7” × 0.6”

With handwritten note from the Folch Collection


Azurite. Front
Front
Azurite. Rear
Rear
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Wulfenite with Dolomite
Wulfenite with Dolomite.

RP99I2: The main crystal, of considerable size and excellent sharpness, has a quite rough aspect due to a later coverage of different minerals, between them Dolomite and some small green crystals of Duftite.
Tsumeb Mine, Tsumeb  Namibia (±1979)

Specimen size: 4.6 × 4.4 × 1.7 cm = 1.8” × 1.7” × 0.7”

Main crystal size: 3.7 × 3.4 cm = 1.5” × 1.3”

With handwritten note from the Folch Collection


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Calcite with Cuprite (Chalcotrichite)

RP12T5: Feltered growths of Chalcotrichite, the fibrous variety of Cuprite, that partially coat a group of rhombohedral crystals of Calcite.
Tsumeb Mine, Tsumeb  Namibia (±1973)

Specimen size: 5.3 × 2.8 × 2.5 cm = 2.1” × 1.1” × 1.0”

Main crystal size: 0.5 × 0.4 cm = 0.2” × 0.2”

With handwritten note from the Folch Collection

Minor fluorescence short UV

Calcite with Cuprite (Chalcotrichite). Calcite with Cuprite (Chalcotrichite).
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BRAZIL


Titanite
Titanite.

RQ13W6: Floater aggregate of twinned crystals. They are between translucent and transparent, very bright, and with an intense yellow color with greenish reflections.
Capelinha, Minas Gerais  Brazil (±1967)

Specimen size: 4.1 × 2.5 × 1.2 cm = 1.6” × 1.0” × 0.5”

With handwritten note from the Folch Collection


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Spodumene (Kunzite)
Spodumene (Kunzite)

RA10H0: Doubly terminated crystal, a floater, with excellent color, luster and transparency and abundant figures of growth on the main faces. On the collection record it’s noted as acquired in Zόrich from Arthur Sulzbach, September 1961.
Minas Gerais  Brazil (±1961)

Specimen size: 13.2 × 5.6 × 2 cm = 5.2” × 2.2” × 0.8”

With handwritten note & record from the Folch Collection

Fluorescent short UV & minor fluorescence long UV

Spodumene (Kunzite). Front
Front
Spodumene (Kunzite). Side
Side
Spodumene (Kunzite). Top
Top
Order
Elbaite (Indicolite)
Elbaite (Indicolite).

RR96R6: Estremely elongated crystal, with an excellent termination, with very well defined faces and edges. The crystal is very transparent and has an excellent blue color, very well defined all along the prism, with greenish tones in the terminal zone.
Golconda pegmatite, Governador Valadares, Vale do Rio Doce, Minas Gerais  Brazil (±1965)

Specimen size: 7.3 × 0.7 × 0.6 cm = 2.9” × 0.3” × 0.2”

With handwritten note from the Folch Collection


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SOUTH AMERICA (EXCL. BRAZIL)


Rhodochrosite
Rhodochrosite

RJ47V5: The sample shows a perfectly polished surface that reveals concentric structures with a very deep color on the left, and crystalline and brecciated structures with a lighter color on the rest of the sample.
The sample is with a label and the collection card that we'll send to the buyer.
Mina Capillitas, Andalgalα, Catamarca  Argentina (±1960)

Specimen size: 12.3 × 8.7 × 2 cm = 4.8” × 3.4” × 0.8”

With handwritten note & record from the Folch Collection


Rhodochrosite.
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Paravauxite
Paravauxite. Font
Font
Paravauxite. Side
Side
Paravauxite

RL86K0: Very sharp, well defined and bright prismatic crystals on matrix. Registered with the Folch collection number 3754, it was previously from the A. Santos collection (1952).
Mina Siglo XX, Llallagua, Potosν  Bolivia (±1952)

Specimen size: 3.8 × 3.2 × 4 cm = 1.5” × 1.3” × 1.6”

Main crystal size: 0.7 × 0.3 cm = 0.3” × 0.1”

With handwritten note & record from the Folch Collection


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Acanthite

RY13H8: Good miniature with small crystals, which combine the cube and octahedron, and have well-defined faces and edges. Actually it is very difficult to obtain samples from this classic locality.
Copiapσ, Atacama  Chile

Specimen size: 1.6 × 1.4 × 1.1 cm = 0.6” × 0.6” × 0.4”

Main crystal size: 0.3 × 0.2 cm = 0.1” × 0.1”

With handwritten note from the Folch Collection


Acanthite.
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ASIA - AUSTRALIA


Diopside
Diopside. Front
Front
Diopside. Rear
Rear

RP59V0: Very sharp crystal with neat faces and edges, translucent, and with a very deep and uniform green color. Surely one of the first (near 1980) Afghan diopsides to arrive in Europe.
Nuristan  Afghanistan (±1980)

Specimen size: 2.4 × 1.5 × 0.9 cm = 0.9” × 0.6” × 0.4”

With handwritten note from the Folch Collection


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Pyromorphite with Galena
Pyromorphite with Galena

RP77S7: Parallel growths of prismatic crystals, more defined than usual for Broken Hill pyromorphites, creamy yellow color and with minor Galena.
Broken Hill, Yancowinna County, New South Wales  Australia

Specimen size: 5.2 × 4.3 × 2.7 cm = 2.0” × 1.7” × 1.1”

Main crystal size: 1 × 0.8 cm = 0.4” × 0.3”

With handwritten note from the Folch Collection

Very fluorescent long & short UV

Pyromorphite with Galena. Front
Front
Pyromorphite with Galena. Rear
Rear
Pyromorphite with Galena.
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Axinite-(Fe) with Quartz pseudo Danburite
Axinite-(Fe) with Quartz pseudo Danburite.

RM11M5: The sample is from a classic locality but, at the same time, uncommon. The crystals of Axinite-(Fe) are poorly defined but they offer the advantage of being associated with Quartz pseudomorphs after Danburite.
Obira Mine, Ono-gun, Oita, Kyushu Island  Japan

Specimen size: 4.4 × 3.3 × 1.9 cm = 1.7” × 1.3” × 0.7”

Main crystal size: 1 × 0.4 cm = 0.4” × 0.2”

With handwritten note from the Folch Collection


Sold


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