Reference Specimens
The Folch Collection

(para ver esta página en español)

Previous Page Previous Page Next Page Next Page

  Back to the Index of the Reference Specimens Page bottom

Photos by Fabre Minerals. Under Creative Commons license

This page provides a selection of the specimensthat were in the Folch Collection that have passed through the Fabre Minerals website and, due to their quality,
rarity, or significance as specimens from interesting locations, have been preserved as reference specimens in #MVM
We hope that you enjoy your visit, even if it is just to see this page!

Carles Curto Text: Carles Curto (former Geology Museum, Barcelona curator) & 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 specimens, 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 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, when possible, damage free. On the death of Sr. Folch, in 1984, the collection passed to his son Alberto, and when he in turn died it went 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 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 expressed their desire to update the collection so as to make it more current - since 1984 nothing new had been added so there was a significant gap in the minerals found since then. After lots of friendly and unhurried discussions the Folch family asked me to help them with this updating process. To do this we had the good fortune that the collection included 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 and/or high quality they still represent good commercial specimens.

So, for the first time, some of the duplicate specimens from the Folch Collection are emerging into the sunlight. Each one of them has hand written notes made by Sr. Folch himself as well as, in many cases, his personal label and number (in the case that they were part of the major 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 visitors)

This project will take us a long time, as the specimens 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 because the profits gained from the sale of these duplicates are used to acquire more contemporary specimens, thus satisfying the family's desire to update the collection.

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 great joy to collectors worldwide, as well as increasing interest in and knowledge of the Folch collection in 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

 


United Kingdom

Bornite with Chalcocite
Bornite with Chalcocite.
 

RD11Z8: Aggregate of small crystals with very well defined faces and edges, and with iridescences of a dominant bluish color. A good thumbnail of an English classic.
Carn Brea, Pool, Illogan, Camborne - Redruth - Saint Day District, Cornwall  England / United Kingdom

Specimen size: 2.4 × 1.6 × 1.1 cm = 0.94” × 0.63” × 0.43”

With handwritten note from the Folch Collection (duplicates)
Chalcocite with Bornite
Chalcocite with Bornite  

RC12K9: Skeletal growths of Chalcocite, acompanied by parallel aggregates of small Bornite cubic crystals.
Carn Brea, Pool, Illogan, Camborne - Redruth - Saint Day District, Cornwall  England / United Kingdom

Specimen size: 2.4 × 2.0 × 1.4 cm = 0.94” × 0.79” × 0.55”

Main crystal size: 0.4 × 0.3 cm = 0.16” × 0.12”

With handwritten note from the Folch Collection (duplicates)
Chalcocite with Bornite.
Chalcocite with Bornite.
Chalcocite with Bornite
Chalcocite with Bornite.
 

RB63J5: Excellent classic miniature. Group of prismatic crystals of very well defined faces and edges.
Carn Brea, Pool, Illogan, Camborne - Redruth - Saint Day District, Cornwall  England / United Kingdom

Specimen size: 2.6 × 1.9 × 1.7 cm = 1.02” × 0.75” × 0.67”

Main crystal size: 0.6 × 0.3 cm = 0.24” × 0.12”

With record from the Folch Collection (duplicates)

Minor fluorescence short UV
Chalcocite with Bornite
Chalcocite with Bornite  

RA86J5: Excellent classic miniature. Group of tabular pseudohexagonal crystals of very well defined faces and edges.
Carn Brea, Pool, Illogan, Camborne - Redruth - Saint Day District, Cornwall  England / United Kingdom

Specimen size: 3 × 2.6 × 1.7 cm = 1.18” × 1.02” × 0.67”

Main crystal size: 0.4 × 0.4 cm = 0.16” × 0.16”

With handwritten note from the Folch Collection (duplicates)

Minor fluorescence short UV
Chalcocite with Bornite. Chalcocite with Bornite.
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, Polzeath, St Minver, Wadebridge District, Cornwall  England / United Kingdom (±1926)

Specimen size: 4.4 × 4.2 × 2 cm = 1.73” × 1.65” × 0.79”

Main crystal size: 1.6 × 0.5 cm = 0.63” × 0.20”

With handwritten note from the Folch Collection (duplicates)

Fluorescent short UV
Cassiterite
Cassiterite  

RK36F9: The classic habit for crystals of Cassiterite from the Dolcoath mine. Very enlarged prisms with faces on the tips forming very acute pyramids. A specimen with pedigree because on its back side are both the numbers of the Folch and Sir Arthur Russell collections. The specimen is documented also with the labels from both collections.
Dolcoath Mine, Tuckingmill, Camborne, Camborne - Redruth - Saint Day District, Cornwall  England / United Kingdom

Specimen size: 3.3 × 2.6 × 2.3 cm = 1.30” × 1.02” × 0.91”

Main crystal size: 0.6 × 0.2 cm = 0.24” × 0.08”

With handwritten note & record from the Folch Collection (duplicates)
Cassiterite. Front
Front
Cassiterite. Rear
Rear
Cassiterite with Zinkenite
Cassiterite with Zinkenite.
Cassiterite with Zinkenite.
 

RJ47F8: A group of Cassiterite twins, very typical of Cornwall and on matrix. Needle crystals of Zinkenite accompany the Cassiterite. Although the mine that it is from is not given, it is the type of specimen that is hard to find.
Cornwall  England / United Kingdom (±1926)

Specimen size: 6 × 4.8 × 2.7 cm = 2.36” × 1.89” × 1.06”

Main crystal size: 1.2 × 1.2 cm = 0.47” × 0.47”

With handwritten note from the Folch Collection (duplicates)
Chalcopyrite with Quartz
Chalcopyrite with Quartz  

RM47F8: An excellent and classic example from the Tincroft Mine. A group of well defined crystals on a perfectly sized matrix. It was bought from Sir Arthur Russell in 1926.
The specimen has been published in the magazine ‘extraLAPIS’ on page 54, number 57, "Cornwall & Devon" and for the magazine ‘Lapis‘, page 8, Jan/Feb 2025
Tincroft Mine, Carn Brea and Tincroft United Mines, Carn Brea, Camborne - Redruth - Saint Day District, Cornwall  England / United Kingdom (±1926)

Specimen size: 3.7 × 3.4 × 3.1 cm = 1.46” × 1.34” × 1.22”

Main crystal size: 0.9 × 0.8 cm = 0.35” × 0.31”

With handwritten note & record from the Folch Collection (duplicates)
Chalcopyrite with Quartz.
Pyromorphite
Pyromorphite.
Pyromorphite  

RB96F9: A group of prismatic crystals of an excellent color and a very vivid brightness.
The specimen is enriched by an old label from the Sir Arthur Russell collection (number 64)
Wheal Alfred, Phillack, Cornwall  England / United Kingdom (±1824)

Specimen size: 2.5 × 2 × 1.7 cm = 0.98” × 0.79” × 0.67”

Main crystal size: 0.7 × 0.3 cm = 0.28” × 0.12”

With handwritten note from the Folch Collection (duplicates)

Fluorescent long & short UV
Pyromorphite
Pyromorphite  

RQ16K0: Prismatic crystals on matrix. The prisms are not well defined due to the fact that they are formed by aggregates of acicular crystals that give a satin luster to them. Color is good for the locality.
Cornwall  England / United Kingdom

Specimen size: 3.6 × 3.3 × 3.2 cm = 1.42” × 1.30” × 1.26”

Main crystal size: 0.8 × 0.5 cm = 0.31” × 0.20”

With handwritten note from the Folch Collection (duplicates)

Minor fluorescence with long & short UV
Pyromorphite. Font
Font
Pyromorphite. Side
Side
Pyromorphite on Quartz
Pyromorphite on Quartz.
Pyromorphite on Quartz  

RK26F9: Collecting is also History and this specimen, with little prismatic crystals on Quartz, is History. Originally labeled as Campilite, it was purchased by Sr. Folch in 1940.
Wheal Alfred, Phillack, Cornwall  England / United Kingdom

Specimen size: 4.8 × 4 × 2 cm = 1.89” × 1.57” × 0.79”

Main crystal size: 0.3 × 0.1 cm = 0.12” × 0.04”

With handwritten note & record from the Folch Collection (duplicates)

Fluorescent long & short UV
Pyromorphite
Pyromorphite  

RF14R0: Group of small crystals with rounded faces and edges, most of them almost spherical. They are light green and on a first generation of very minute brownish crystals of the same Pyromorphite, all on matrix. Often with such old samples we haven't exact information about the precise locality.
Cornwall  England / United Kingdom

Specimen size: 7.4 × 4.6 × 3.4 cm = 2.91” × 1.81” × 1.34”

Main crystal size: 0.2 × 0.2 cm = 0.08” × 0.08”

With handwritten note from the Folch Collection (duplicates)

Fluorescent long & short UV
Pyromorphite. Pyromorphite.
Cuprite
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, Phoenix United Mine, Minions, Linkinhorne, Liskeard District, Cornwall  England / United Kingdom

Specimen size: 3.1 × 2 × 1.6 cm = 1.22” × 0.79” × 0.63”

With handwritten note from the Folch Collection (duplicates)
Cuprite
 

RV36F8: A miniature classic from the Wheal Phoenix Mine. The crystals are brilliant, have good color, and have perfect growth of the octahedral form, and also the cubic form in some cases. The handwritten label has ‘Russell’ written on it, so it must have come from Sir Arthur Russell, who Folch knew.
Wheal Phoenix, Phoenix United Mine, Minions, Linkinhorne, Liskeard District, Cornwall  England / United Kingdom (±1948)

Specimen size: 3.8 × 1.9 × 1.9 cm = 1.50” × 0.75” × 0.75”

Main crystal size: 0.2 × 0.2 cm = 0.08” × 0.08”

With handwritten note from the Folch Collection (duplicates)
Cuprite.
Cuprite.
Cuprite with Copper
Cuprite with Copper.
Cuprite with Copper.
 

RC86H0: Another classic, with the typical appearance of the Cuprite samples from Liskeard. Crystals are octahedrons and they show two different forms, isolated on most of the piece’s surface and spherically grouped on the upper left zone. There is also native Copper on the back side of the piece.
South Caradon, Liskeard, Cornwall  England / United Kingdom (±1926)

Specimen size: 6.5 × 4.2 × 3 cm = 2.56” × 1.65” × 1.18”

Main crystal size: 0.3 × 0.2 cm = 0.12” × 0.08”

With handwritten note from the Folch Collection (duplicates)
Chalcosiderite
 

RA87F8: A specimen that is especially rich in brilliant, well colored micro-crystals of this rare species. From the Parisian dealer Deyrolle.
Cornwall  England / United Kingdom

Specimen size: 6.7 × 3.5 × 4.5 cm = 2.64” × 1.38” × 1.77”

With handwritten note from the Folch Collection (duplicates)
Chalcosiderite.
Chalcosiderite. Chalcosiderite.
Chalcosiderite with Quartz
Chalcosiderite with Quartz. Chalcosiderite with Quartz.
Chalcosiderite with Quartz  

RE27P1: Aggregates of small very well defined crystals, very bright and of deep color filling vugs in a Quartz matrix.
The sample is from the collection of Sir Arthur Russell and previously from the collection of J.J. Couzens.
Wheal Phoenix, Phoenix United Mine, Minions, Linkinhorne, Liskeard District, Cornwall  England / United Kingdom

Specimen size: 7.9 × 6.1 × 2 cm = 3.11” × 2.40” × 0.79”

Main crystal size: 0.2 × 0.1 cm = 0.08” × 0.04”

With handwritten note from the Folch Collection (duplicates)
Olivenite
 

RT17F9: Acicular crystals reach a considerable length and form attractive aggregates on matrix. An interesting note to add is that the species was first described on samples from Cornwall.
Cornwall  England / United Kingdom

Specimen size: 4.9 × 3 × 2 cm = 1.93” × 1.18” × 0.79”

With handwritten note from the Folch Collection (duplicates)
Olivenite.
Olivenite.
Olivenite
Olivenite.
Olivenite.
Olivenite  

RQ80F9: Fine specimen of this rare arsenate. Acicular crystals are grouped in very definite aggregates, with the classic olive-green color for which the mineral is named, on a Quartz matrix. Cornwall is the type locality for the species.
Cornwall  England / United Kingdom

Specimen size: 6.2 × 4.5 × 3.3 cm = 2.44” × 1.77” × 1.30”

With handwritten note from the Folch Collection (duplicates)
Olivenite with Malachite
Olivenite with Malachite  

FY48J6: Radial groups of acicular crystals with the olive color characteristic of the species. The sample also has concretions of Malachite and it is on matrix.
The sample has all the virtues we love on best Folch’s specimens. Presence, classic taste and pedigree, enhanced by the labels of Sir Arthur Russell collection and, originally, from Lady Elizabeth Anne Coxe Hippisley collection.
Wheal Gorland, Saint Day, Camborne - Redruth - Saint Day District, Cornwall  England / United Kingdom

Specimen size: 8.2 × 4.5 × 4.6 cm = 3.23” × 1.77” × 1.81”

Main crystal size: 0.4 × 0.1 cm = 0.16” × 0.04”

With handwritten note & record from the Folch Collection (duplicates)
Olivenite with Malachite.
Olivenite with Malachite.
Liroconite
Liroconite.
Liroconite. Liroconite.
 

RE92G2: Type locality. Crystals are very numerous, most of them well developed and some with deformations and contacts (but no damage). They have two very different colors, the typical blue and the greenish, much less common.
Wheal Gorland, Saint Day, Camborne - Redruth - Saint Day District, Cornwall  England / United Kingdom

Specimen size: 8.5 × 7.8 × 6.8 cm = 3.35” × 3.07” × 2.68”

Main crystal size: 0.5 × 0.2 cm = 0.20” × 0.08”

With handwritten note from the Folch Collection (duplicates)
Twinned Bournonite with Quartz
 

RY30F8: Extraordinary specimen. The cogwheel twin, along with some other smaller ones, is perfectly placed on the matrix and has maintained its brilliance over the years. The locality is also wonderful: Herodsfoot Mine. To add even more to its glory it was bought from Sir Arthur Russell in 1926.
This specimen's photo has been reviewed and published in the magazine ‘Mineralogical Record’ on page 459 in the volume 43, number 4
Herodsfoot Mine, Lanreath, Liskeard, Cornwall  England / United Kingdom (±1926)

Specimen size: 5.2 × 2.7 × 3.3 cm = 2.05” × 1.06” × 1.30”

Main crystal size: 2.5 × 1.7 cm = 0.98” × 0.67”

With handwritten note & record from the Folch Collection (duplicates)
Twinned Bournonite with Quartz. Front
Front
Twinned Bournonite with Quartz. Rear
Rear
Twinned Bournonite with Quartz. Top
Top
Datolite
Datolite. Datolite.
 

RJ57Q5: Datolite with an excellent crystallization from a very unusual locality, classic for the mineralogy of the United Kingdom, but whose specimens are today practically impossible to find.
Isle of Skye, Inner Hebrides, Highlands  Scotland / United Kingdom

Specimen size: 4.2 × 2.4 × 2.4 cm = 1.65” × 0.94” × 0.94”

Main crystal size: 1.2 × 0.7 cm = 0.47” × 0.28”

With handwritten note from the Folch Collection (duplicates)

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.
Berezovskoe Mines, Uspenskaya Mountain, Berezovskii, Ekaterinburg (Sverdlovsk), Sverdlovsk Oblast, Ural  Russia

Specimen size: 11.5 × 4.3 × 2.6 cm = 4.53” × 1.69” × 1.02”

Main crystal size: 1.1 × 0.2 cm = 0.43” × 0.08”

With handwritten note from the Folch Collection (duplicates)

Type locality
Crocoite with Vauquelinite and Quartz. Crocoite with Vauquelinite and Quartz.
Topaz
Topaz.
 

RJ10M2: Miass is one of the best known classic localities for the species, but contrary to the usual blue color for Topaz specimens from there, this crystal shows a lively yellow color. The transparency, brilliance and definition of its crystalline forms are excellent.
Reserva Natural Ilmen, Miass, Ilmenskie Mountains, Chelyabinsk Oblast, Ural Federal District  Russia

Specimen size: 1.3 × 1.1 × 0.9 cm = 0.51” × 0.43” × 0.35”

With handwritten note from the Folch Collection (duplicates)

Minor fluorescence short UV

MOROCCO


Azurite
Azurite  

RH11I8: The crystal is prismatic, doubly terminated and with very well defined faces and edges. The termination below, even being less marked faces, is clear and defined.
Kerrouchen, Khénifra Province, Beni Mellal-Khenifra Region  Morocco (±1978)

Specimen size: 3.7 × 2.2 × 1.5 cm = 1.46” × 0.87” × 0.59”

With handwritten note & record from the Folch Collection (duplicates)
Azurite. Front
Front
Azurite. Rear
Rear
Azurite
Azurite. Front
Front
Azurite. Rear
Rear
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, Touissit District, Jerada Province, Oriental Region  Morocco (±1979)

Specimen size: 5.2 × 2.8 × 1.5 cm = 2.05” × 1.10” × 0.59”

With handwritten note & record from the Folch Collection (duplicates)
Skutterudite
 

RD46G2: A well developed crystal on matrix. The sample was purchased by Folch from Victor Yount in 1974 when Yount began the commerce of minerals, precisely in Spain.
Bou Azzer mining district, Drâa-Tafilalet Region  Morocco (±1971)

Specimen size: 4 × 3.8 × 2.5 cm = 1.57” × 1.50” × 0.98”

Main crystal size: 2.5 × 2 cm = 0.98” × 0.79”

With handwritten note & record from the Folch Collection (duplicates)

Calcite fluorescent long & short UV
Skutterudite.
Skutterudite with Calcite
Skutterudite with Calcite.
 

RF60Q5: Cuboctahedral crystal with very well defined faces and edges, on matrix and with Calcite. A Moroccan classic.
Bou Azzer mining district, Drâa-Tafilalet Region  Morocco

Specimen size: 4.2 × 4 × 2.8 cm = 1.65” × 1.57” × 1.10”

Main crystal size: 2.2 × 2.2 cm = 0.87” × 0.87”

With handwritten note from the Folch Collection (duplicates)
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 mining district, Drâa-Tafilalet Region  Morocco (±1979)

Specimen size: 4.5 × 4.3 × 2.9 cm = 1.77” × 1.69” × 1.14”

Main crystal size: 0.6 × 0.4 cm = 0.24” × 0.16”

With handwritten note from the Folch Collection (duplicates)
Erythrite. Erythrite.
Erythrite with Quartz
Erythrite with Quartz. Erythrite with Quartz.
 

RC66I7: Prismatic crystals with excellent color and luster, on matrix. The specimen is with a label from Juan Montal, Vilafranca del Penedès, with a note with the date May 1, 1967.
Bou Azzer mining district, Drâa-Tafilalet Region  Morocco (±1967)

Specimen size: 6 × 5 × 3.8 cm = 2.36” × 1.97” × 1.50”

Main crystal size: 1.2 × 0.5 cm = 0.47” × 0.20”

With handwritten note from the Folch Collection (duplicates)
Erythrite with Roselite and Skutterudite
Erythrite with Roselite and Skutterudite  

RF86H7: Vug of Erythrite from the finds in the second half of the seventies. Some of the crystals are erect and aerial and they are bright, transparent and have good color.
Bou Azzer mining district, Drâa-Tafilalet Region  Morocco (±1967)

Specimen size: 6.7 × 5.1 × 3.8 cm = 2.64” × 2.01” × 1.50”

Main crystal size: 0.7 × 0.5 cm = 0.28” × 0.20”

With handwritten note from the Folch Collection (duplicates)
Erythrite with Roselite and Skutterudite. Erythrite with Roselite and Skutterudite.
Roselite with Calcite
Roselite with Calcite.
 

RX60N4: Very well defined and isolated crystals of good color and transparency, with Calcite and on matrix.
Agoudal Mines, Tansifite, Agdz, Bou Azzer mining district, Zagora Province, Drâa-Tafilalet Region  Morocco (±1979)

Specimen size: 3.4 × 2.4 × 1.7 cm = 1.34” × 0.94” × 0.67”

Main crystal size: 0.4 × 0.2 cm = 0.16” × 0.08”

With handwritten note from the Folch Collection (duplicates)
Roselite with Calcite
 

RE14I7: Groups of crystals that have excellent color and luster. They are with small crystals of Calcite and a crystal of Quartz. On the original label a note says it was acquired November 8, 1969, by H. Sleiffer, from the Netherlands at the Zurich show.
Agoudal Mines, Tansifite, Agdz, Bou Azzer mining district, Zagora Province, Drâa-Tafilalet Region  Morocco (±1969)

Specimen size: 5.4 × 3.8 × 2.4 cm = 2.13” × 1.50” × 0.94”

Main crystal size: 0.2 × 0.2 cm = 0.08” × 0.08”

With handwritten note & record from the Folch Collection (duplicates)

Calcite fluorescent long & short UV
Roselite with Calcite.
Roselite with Calcite.
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, Jebel Irhoud, Youssoufia Province, Marrakesh-Safi Region  Morocco (±1979)

Specimen size: 8.2 × 7.8 × 5.2 cm = 3.23” × 3.07” × 2.05”

Main crystal size: 0.5 × 0.4 cm = 0.20” × 0.16”

With handwritten note from the Folch Collection (duplicates)

AFRICA


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, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape  South Africa (±1976)

Specimen size: 8.6 × 6.7 × 3.8 cm = 3.39” × 2.64” × 1.50”

Main crystal size: 0.3 × 0.3 cm = 0.12” × 0.12”

With handwritten note from the Folch Collection (duplicates)
Rhodochrosite with Gypsum. Rhodochrosite with Gypsum.
Plancheite with Chrysocolla
Plancheite with Chrysocolla.
 

RN59M2: A representative specimen for classic Plancheite specimens, a little bit different than the actual samples we usually see in the market. This specimen is in spherical forms constituted by radiated acicular growths with a deep blue color, partially covered by a Chrysocolla layer. A really nice miniature from past times.
Kambove District, Katanga Copper Crescent, Katanga (Shaba)  Democratic Republic of the Congo (Zaire) (±1958)

Specimen size: 2 × 1.5 × 1.4 cm = 0.79” × 0.59” × 0.55”

With handwritten note from the Folch Collection (duplicates)
Plancheite with Malachite
 

RM63M9: Classic sample in which the laminar growths of silky luster and greenish blue color surround a group of Malachite.
Kambove District, Katanga Copper Crescent, Katanga (Shaba)  Democratic Republic of the Congo (Zaire) (±1958)

Specimen size: 3.5 × 2.6 × 2.2 cm = 1.38” × 1.02” × 0.87”

With handwritten note & record from the Folch Collection (duplicates)
Plancheite with Malachite.
Chalcocite
Chalcocite.
 

RE62I8: An especially interesting miniature. The sharp crystals, with very well-defined faces and edges, form a very aerial parallel growth.
Kamoto Principal Mine (Kamoto Mine), Kamoto, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba)  Democratic Republic of the Congo (Zaire)

Specimen size: 1.3 × 1 × 0.7 cm = 0.51” × 0.39” × 0.28”

With handwritten note from the Folch Collection (duplicates)
Chalcocite
 

RF62I8: An especially interesting miniature. The sharp crystals, with very well-defined faces and edges, form a very aerial parallel growth.
Kamoto Principal Mine (Kamoto Mine), Kamoto, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba)  Democratic Republic of the Congo (Zaire)

Specimen size: 1.6 × 0.9 × 1 cm = 0.63” × 0.35” × 0.39”

With handwritten note from the Folch Collection (duplicates)
Chalcocite.
Hopeite
Hopeite. Front
Front
Hopeite. Rear
Rear
 

RG47F8: The crystals have formed as two generations. In the first it has created white prisms and in the second the prisms are exceptional for their growth, brilliance and transparency. A gift from a German engineer (he does not give his name) who collected it in the mine in 1921.
Kabwe Mine (Broken Hill Mine), Kabwe (Kabwe-Ka Mukuba), Kabwe District, Central Province  Zambia (1921)

Specimen size: 2.9 × 2 × 1.9 cm = 1.14” × 0.79” × 0.75”

Main crystal size: 0.7 × 0.6 cm = 0.28” × 0.24”

With handwritten note & record from the Folch Collection (duplicates)

Fluorescent long & short UV
Hopeite with Smithsonite
Hopeite with Smithsonite  

RH86L9: Small crystals of this rare hydrated zinc phosphate: Hopeite. Crystals show very sharp faces and edges, with some internal zoning, probably inclusions of Goethite, on a Smithsonite matrix.
The piece is accompanied by a commercial label of Burminco (George Burnham)
Kabwe Mine (Broken Hill Mine), Kabwe (Kabwe-Ka Mukuba), Kabwe District, Central Province  Zambia (±1958)

Specimen size: 13.3 × 9.7 × 3.7 cm = 5.24” × 3.82” × 1.46”

Main crystal size: 0.6 × 0.4 cm = 0.24” × 0.16”

With handwritten note from the Folch Collection (duplicates)
Hopeite with Smithsonite.
Hopeite with Smithsonite.
Parahopeite
Parahopeite. Parahopeite.
 

RQ37F8: Another classic, but the form of the crystals is much better than most of the other specimens from the Broken Hill Mine (currently Kabwe Mine). Bought in 1948 from Gregory & Bottley, London.
Kabwe Mine (Broken Hill Mine), Kabwe (Kabwe-Ka Mukuba), Kabwe District, Central Province  Zambia (±1948)

Specimen size: 4 × 3 × 2.5 cm = 1.57” × 1.18” × 0.98”

With handwritten note & record from the Folch Collection (duplicates)

Fluorescent long & short UV
Descloizite with Calcite
 

RG17M3: Very esthetic and aerial group of Descloizite crystals with deep reddish tones. Well defined faces and edges forming parallel growth which remind one of a bird's feather. On matrix.
The piece is accompanied by a handwritten label from Mr. Folch that we’ll send to the buyer.
Berg Aukas, Grootfontein District, Otjozondjupa Region  Namibia

Specimen size: 4.6 × 3.1 × 2.6 cm = 1.81” × 1.22” × 1.02”

Main crystal size: 0.6 × 0.4 cm = 0.24” × 0.16”

With handwritten note from the Folch Collection (duplicates)

Calcite fluorescent short UV
Descloizite with Calcite. Descloizite with Calcite.
Descloizite
Descloizite.
Descloizite.
 

RP64L3: Group of Descloizite crystals formed by the dipyramid faces and lateral pinacoid, both very brilliant. Specimen shows a nice reddish brown color. In the handwritten label we can read Tsumeb as the locality, but we must advise that in those years many specimens from different deposits and localities from Namibia were mislabeled as Tsumeb.
Berg Aukas, Grootfontein District, Otjozondjupa Region  Namibia

Specimen size: 4.7 × 3 × 2.5 cm = 1.85” × 1.18” × 0.98”

Main crystal size: 1 × 0.7 cm = 0.39” × 0.28”

With handwritten note from the Folch Collection (duplicates)
Descloizite
 

RA37G6: Good group of numerous crystals. Every one of the crystals is itself a group of little crystals of delicately curved edges, a typical shape in the classic samples from Namibia. The piece seems to be stalactitic because it is hollow at its base.
Berg Aukas, Grootfontein District, Otjozondjupa Region  Namibia (±1973)

Specimen size: 8.4 × 6 × 4.5 cm = 3.31” × 2.36” × 1.77”

With handwritten note from the Folch Collection (duplicates)
Descloizite. Descloizite.
Descloizite
Descloizite. Frontal
Frontal
Descloizite. Rear
Rear
Descloizite.
Descloizite  

RQ69M3: This specimen shows two well differentiated aspects. on one side crystals resemble a bird's feather, flattened, with good luster and reddish color. On the back side one can see thick Descloizite crystals with very well defined faces and edges and completely black color.
This sample was from Scott J. Williams (Southwest Co.) of Scottsdale, Arizona. The piece is accompanied by Mr. Folch’s handwritten label and card Nr. 9520 from the Folch Collection. We’ll send both to the buyer.
Berg Aukas, Grootfontein District, Otjozondjupa Region  Namibia (±1965)

Specimen size: 12.2 × 9 × 7.2 cm = 4.80” × 3.54” × 2.83”

Main crystal size: 2.4 × 1.4 cm = 0.94” × 0.55”

With handwritten note & record from the Folch Collection (duplicates)
Descloizite
 

RG87M9: Typical sample from the most productive times in Berg Aukas, with crystals of slightly oval edges, dark and with reddish reflections. The sample, on matrix, is really a classic.
Berg Aukas, Grootfontein District, Otjozondjupa Region  Namibia (±1973)

Specimen size: 12.3 × 7.8 × 3.6 cm = 4.84” × 3.07” × 1.42”

Main crystal size: 1.4 × 0.8 cm = 0.55” × 0.31”

With handwritten note from the Folch Collection (duplicates)
Descloizite. Descloizite.
Descloizite
Descloizite. Descloizite.
Descloizite  

RM69I2: Group of dipyramidal crystals, very well defined, bright and of a clearer color than usual. The dipyramide, as opposed to the most common on samples from Grootfontein, is thick and without curves.
The sample is with a label from John S. Albanese, from New Jersey.
Abenab Mine, Grootfontein District, Otjozondjupa Region  Namibia (±1965)

Specimen size: 7 × 5 × 2.5 cm = 2.76” × 1.97” × 0.98”

Main crystal size: 1 × 0.7 cm = 0.39” × 0.28”

With handwritten note from the Folch Collection (duplicates)
Smithsonite
Smithsonite  

FM96L3: Group of good size and well defined rhombohedral Smithsonite crystals, nearly lenticular habit, yellowish tones and on matrix.
Berg Aukas, Grootfontein District, Otjozondjupa Region  Namibia (±1963)

Specimen size: 7.9 × 7.8 × 4.1 cm = 3.11” × 3.07” × 1.61”

Main crystal size: 0.9 × 0.8 cm = 0.35” × 0.31”

With handwritten note & record from the Folch Collection (duplicates)

Minor fluorescence short UV
Smithsonite.
Smithsonite.
Smithsonite with Descloizite
Smithsonite with Descloizite. Smithsonite with Descloizite.
 

RP86V5: Small acute rhombohedral crystals of Smithsonite with polycrystalline growths on their faces, a clear green color, with aggregates of yellow Descloizite 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 District, Otjozondjupa Region  Namibia

Specimen size: 10.8 × 10.2 × 5.1 cm = 4.25” × 4.02” × 2.01”

Main crystal size: 0.2 × 0.1 cm = 0.08” × 0.04”

With handwritten note from the Folch Collection (duplicates)
Betafite Group
 

RA13AA2: Floater crystal with a brownish-yellow color and very well defined faces and edges, with the forms of the octahedron and the rhombohedron. Currently what was called betafite has been discredited as a species and it is now considered as a variety of pyrochlore. As with most of the members of the pyrochlore group, it is in a revision process.
Ambalahazo, Fidirana Commune, Betafo District, Vakinankaratra Region, Antananarivo Province  Madagascar (±1977)

Specimen size: 1.8 × 1.4 × 1.4 cm = 0.71” × 0.55” × 0.55”

Betafite Group. Front
Front
Betafite Group. Rear
Rear
Betafite Group
Betafite Group. Front
Front
Betafite Group. Top
Top
 

RD6AA2: Group of crystals, one of them clearly dominant, with a brownish-yellow color and very well defined faces and edges, with the forms of the octahedron and the rhombohedron. Currently what was called betafite has been discredited as a species and it is now considered as a variety of pyrochlore. As with most of the members of the pyrochlore group, it is in a revision process.
Ambalahazo, Fidirana Commune, Betafo District, Vakinankaratra Region, Antananarivo Province  Madagascar (±1977)

Specimen size: 2.2 × 1.9 × 2.1 cm = 0.87” × 0.75” × 0.83”

Betafite Group
 

RB6AA2: Floater crystal with a brownish-yellow color and very well defined faces and edges, with parallel growths and with the forms of the octahedron and the rhombohedron. Currently what was called betafite has been discredited as a species and it is now considered as a variety of pyrochlore. As with most of the members of the pyrochlore group, it is in a revision process.
Ambalahazo, Fidirana Commune, Betafo District, Vakinankaratra Region, Antananarivo Province  Madagascar (±1977)

Specimen size: 2.7 × 2 × 2.1 cm = 1.06” × 0.79” × 0.83”

Betafite Group. Front
Front
Betafite Group. Side
Side
Betafite Group
Betafite Group. Front
Front
Betafite Group. Side
Side
 

RC26AA2: Floater crystal with a brownish-yellow color and very well defined faces and edges, with parallel growths and with the forms of the octahedron and the rhombohedron. Currently what was called betafite has been discredited as a species and it is now considered as a variety of pyrochlore. As with most of the members of the pyrochlore group, it is in a revision process.
Ambalahazo, Fidirana Commune, Betafo District, Vakinankaratra Region, Antananarivo Province  Madagascar (±1977)

Specimen size: 3.2 × 2.5 × 2.9 cm = 1.26” × 0.98” × 1.14”


  Previous Page Previous Page Next Page Next Page Arriba
Back to the Index of the Reference Specimens
 
Home page - Minerals  Comments  Minerales.info  Feedback Form  Search  
Home
page
Minerals
 Comments Minerales.info Feedback
Form
 Search