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Mineral Specimens - page 19
The Carles Curto Collection

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

 


Born in Barcelona in 1950. Right from my early childhood, at the age of ten, and thanks to the mountaineer and naturalist who was my maternal grandfather (who gave me my first collection in 1960), I got in touch with the world of minerals, a hobby that was still a little unknown back then but that was clarified by frequent visits to the Geology Museum in Barcelona and the "old style" shop of Soler Pujol, in the Plaza Real of downtown Barcelona city. In both places I had the opportunity to get to know, along with other newcomers to the hobby, the most expert and highest level collectors, such as D. Josep Cervelló and D. Joaquín Folch.

Between 1962 and 1965, after many Saturday mornings in the Geology Museum in Barcelona, with the ineffable presence of the concierge, D. Francisco García Espino, who sold us modest specimens, always accompanied by some interesting explanation, and with visits to other private collections I was made aware of what could really interest me and I made a qualitative first selection among the wide mix of various objects that I had accumulated and I eliminated a good number of them from a jumble of massive minerals, rocks and fossils (and, why not say it: "pebbles")

In 1969 I decided to start my university studies in the Faculty of Geology of the University of Barcelona, requesting, at the same time, a scholarship from the Municipal Museum of Geology, entering, in 1973, as an interim curator. It was not until years later the 1978 that I became -after examination- to the position of curator.

At the beginning of the seventies, coinciding with an era of special mineralogical activity, the collection continued to grow based on a "classic" (systematic-crystallographic) model, but with more attention to aspects of documentation and genetic interest than to other more "aesthetic" aspects . I was particularly struck by the crystalline morphology and the mineralogical "curiosities", with the final result being an eclectic collection, maybe very irregular, but full of suggestions and surprises and that ended up branching into a section of miniatures.

 

Carles Curto

With the arrival of computerization, in the early eighties, I decided to seriously address the cataloging and bibliography, which I took advantage of to donate a large part of my collection to the Geology Museum of the School of Mining Engineers of the Polytechnic University of Manresa and, many of the most beautiful and significant specimens, to the Museum of Geology (now Museum of Natural Sciences) of Barcelona. It was also at this time that I developed more academic activity and started to inform other people, with numerous publications and collaborations.

In 2017, retired, I decided to make a new start (is it a matter of age?), take a mineralogical break, limit what really interests me and go about reducing things that no longer fit, which is what I have time to do.

Be kind with my selection and enjoy it.

 

The Carles Curto Collection


Silver With Calcite
Silver With Calcite. Silver With Calcite.
Silver With Calcite

CC13AH5: Aggregate on a Calcite matrix of very sharp distorted cube faces that have very well defined faces and edges. We’ll send to the buyer the original label and also a copy of the computer card with the full text of the collection catalog.
La Riza Mine, Mineral del Monte, Municipio Mineral del Monte, Hidalgo  Mexico

Specimen size: 1.7 × 1.5 × 1.2 cm = 0.7” × 0.6” × 0.5”

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

Calcite fluorescent short UV

Former collection of Carles Curto


Euro:85 / US$101 / Yen:11150 / AUD$134

Reservado
Tetrahedrite with Sphalerite and Quartz
Tetrahedrite with Sphalerite and Quartz

MT11AH4: Very sharp and bright tetrahedral Tetrahedrite crystals with twinned caramel-colored Sphalerite crystals and on a matrix of Quartz crystals. We’ll send to the buyer the original label and also a copy of the computer card with the full text in the collection catalog.
Concepción del Oro, Municipio Concepción del Oro, Zacatecas  Mexico

Specimen size: 4.7 × 3.9 × 2.6 cm = 1.9” × 1.5” × 1.0”

Main crystal size: 0.7 × 0.6 cm = 0.3” × 0.2”

Former collection of Carles Curto




Tetrahedrite with Sphalerite and Quartz. Tetrahedrite with Sphalerite and Quartz.
Order
Bismuth
Bismuth. Bismuth.
Bismuth

CG62AH5: Skeletal crystals, crystalline surfaces and foliation planes that are very well defined, extraordinarily bright and on matrix. We’ll send to the buyer the original label and also a copy of the computer card with the full text of the collection catalog.
Pozoblanco, Comarca Los Pedroches, Córdoba, Andalusia  Spain

Specimen size: 3 × 1.9 × 2.2 cm = 1.2” × 0.7” × 0.9”

Former collection of Carles Curto


Euro:70 / US$83 / Yen:9180 / AUD$111

Reservado
Cinnabar
Cinnabar

CA16AH5: Polycrystalline aggregates with rhombohedral forms and on a matrix of massive Cinnabar that has very bright cleavage surfaces. We note the presence of Cinnabar crystals, even not being so well defined due to that they are very uncommon at this mine. We’ll send to the buyer the original label and also a copy of the computer card with the full text of the collection catalog.
Carmina Mine, Boicivacas – Güicivacas, Maraña, Comarca Montaña Oriental, León, Castile and León  Spain

Specimen size: 5.2 × 2.1 × 3 cm = 2.0” × 0.8” × 1.2”

Former collection of Carles Curto


Euro:110 / US$131 / Yen:14430 / AUD$174

Cinnabar. Cinnabar.
Reservado
Calcite (variety cobaltoan)
Calcite (variety cobaltoan). Calcite (variety cobaltoan).
Calcite (variety cobaltoan)

CH9AH4: Botryoidal pale pink growths with recrystallized deep pink coralloid formations. We’ll send to the buyer the original label and also a copy of the computer card with the full text in the collection catalog.
Solita Mine, Peramea, Baix Pallars, Comarca Pallars Sobirà, Lleida/Lérida, Catalonia  Spain

Specimen size: 4.1 × 4 × 2.2 cm = 1.6” × 1.6” × 0.9”

Fluorescent long & short UV

Former collection of Carles Curto




Order
Almandine with Quartz
Almandine with Quartz

CD65AH5: Isolated trapezohedral Almandine crystals with very well defined faces and edges, with very finely growth-oriented striations on the faces, transparent, bright and with a very intense and uniform color. They have grown on a group of Quartz crystals, one of them clearly dominant, with a feldspar matrix. We’ll send to the buyer the original label and also a copy of the computer card with the full text of the collection catalog.
Viladrau, Comarca Osona, Girona/Gerona, Catalonia  Spain

Specimen size: 4.7 × 3.6 × 3.2 cm = 1.9” × 1.4” × 1.3”

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

Former collection of Carles Curto


Euro:65 / US$77 / Yen:8530 / AUD$103

Almandine with Quartz. Almandine with Quartz.
Reservado
Calcite with Marcasite
Calcite with Marcasite. Calcite with Marcasite.
Calcite with Marcasite

CJ13AH4: Doubly terminated scalenohedral Calcite crystal whose lower termination is polycrystalline. It also has a very well defined horizontal twinning plane (perpendicular to the “c” axis) and it is with small aggregates of Marcasite crystals. We’ll send to the buyer the original label and also a copy of the computer card with the full text in the collection catalog.
Bellmunt del Priorat, Comarca Priorat, Tarragona, Catalonia  Spain

Specimen size: 9.9 × 5.9 × 4.4 cm = 3.9” × 2.3” × 1.7”

Main crystal size: 9.6 × 4.5 cm = 3.8” × 1.8”

Fluorescent short UV

Former collection of Carles Curto


Euro:90 / US$108 / Yen:11890 / AUD$144

Reservado
Pyromorphite
Pyromorphite

CM96AH4: Strongly elongated (almost acicular) but well defined crystals, some of them doubly terminated, very bright, with a vivid green color and on matrix. We’ll send to the buyer the original label and also a copy of the computer card with the full text in the collection catalog.
El Horcajo Mines, El Horcajo, Almodóvar del Campo, Comarca Campo de Calatrava, Ciudad Real, Castilla-La Mancha  Spain

Specimen size: 4.4 × 3.5 × 1.4 cm = 1.7” × 1.4” × 0.6”

Main crystal size: 0.8 × 0.1 cm = 0.3” × 0.0”

Minor fluorescence short UV

Former collection of Carles Curto


Euro:180 / US$217 / Yen:23780 / AUD$288

Pyromorphite. Pyromorphite.
Reservado
Silver with Sphalerite
Silver with Sphalerite.
Silver with Sphalerite

CF14AH5: Very elongated dendritic Silver growths on a matrix of poorly defined Sphalerite crystals. It’s very difficult to obtain Silver samples from this old mine of such quality. We’ll send to the buyer the original label and also a copy of the computer card with the full text of the collection catalog.
Rudabánya, Rudabányai Mountains, Borsod-Abaúj-Zemplén  Hungary

Specimen size: 1.9 × 1.7 × 1.1 cm = 0.7” × 0.7” × 0.4”

Main crystal size: 1 × 0.1 cm = 0.4” × 0.0”

Former collection of Carles Curto


Euro:95 / US$113 / Yen:12470 / AUD$150

Reservado
Silver
Silver

CM16AH5: Very bright arborescent Silver growth mainly composed by laminar surfaces and mossy aggregates but with a lens it is possible to see very well defined cubic and octahedral shaped crystals, some of them elongated. We’ll send to the buyer the original label and also a copy of the computer card with the full text of the collection catalog.
Kongsberg mining District, Kongsberg, Buskerud  Norway

Specimen size: 2.7 × 1.3 × 1 cm = 1.1” × 0.5” × 0.4”

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

Former collection of Carles Curto


Euro:90 / US$107 / Yen:11810 / AUD$142

Silver. Silver.
Silver.
Reservado
Uvarovite with Quartz
Uvarovite with Quartz.
Uvarovite with Quartz

CE27AH5: Isolated Uvarovite crystals, one of them clearly dominant, dodecahedral, beveled by the trapezohedron, with very well defined faces and edges and excellent color, very intense and uniform and on a Quartz matrix. We’ll send to the buyer the original label and also a copy of the computer card with the full text the collection catalog.
Outokumpu, Tornio, Lapland Region  Finland

Specimen size: 2.4 × 2.1 × 1.6 cm = 0.9” × 0.8” × 0.6”

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

Former collection of Carles Curto


Euro:220 / US$263 / Yen:28870 / AUD$348

Reservado
Pyrite with Hematite
Pyrite with Hematite

CF14AH4: Sharp pyritohedral Pyrite crystal with residual Hematite crystals and very deep fissures molded by now disappeared laminar Hematite crystals. We’ll send to the buyer the original label and also a copy of the computer card with the full text in the collection catalog.
Terranera Mine, Porto Azzurro, Elba Island, Livorno Province, Tuscany  Italy

Specimen size: 5.3 × 5 × 4.4 cm = 2.1” × 2.0” × 1.7”

Former collection of Carles Curto


Euro:90 / US$108 / Yen:11890 / AUD$144

Pyrite with Hematite. Front
Front
Pyrite with Hematite. Rear
Rear
Reservado
Celestine
Celestine. Front
Front
Celestine. Rear
Rear
Celestine

MF26AH4: Parallel growth of Celestine crystals with very well defined faces and edges, bright, with transparent terminations that are very rich in faces. An Italian classic. We’ll send to the buyer the original label and also a copy of the computer card with the full text in the collection catalog.
Floristella Mine, Enna (Castrogiovanni), Enna Province, Sicily  Italy

Specimen size: 7.2 × 2.6 × 2.4 cm = 2.8” × 1.0” × 0.9”

Main crystal size: 7.2 × 2.4 cm = 2.8” × 0.9”

Very fluorescent long & short UV

Former collection of Carles Curto




Order
Gold on Quartz
Gold on Quartz

CB16AH5: Interstitial native Gold with hooked, laminar and granular forms, spread in a matrix of massive Quartz. We note the locality, very unusual, from which only very few specimens of collection quality are known. We’ll send to the buyer the original label and also a copy of the computer card with the full text of the collection catalog.
Magdalena River, Barrancabermeja, Santander Department  Colombia

Specimen size: 4.9 × 4.0 × 1.8 cm = 1.9” × 1.6” × 0.7”

Former collection of Carles Curto


Euro:110 / US$131 / Yen:14430 / AUD$174

Gold on Quartz. Front
Front
Gold on Quartz. Rear
Rear
Gold on Quartz.
Reservado
Paravauxite
Paravauxite. Paravauxite.
Paravauxite

MV14AH4: Very sharp Paravauxite crystals on a rock matrix. The crystals are pearly white, translucent and very bright. The sample is from the type locality for the species. We’ll send to the buyer the original label and also a copy of the computer card with the full text in the collection catalog.
Siglo Veinte Mine, Llallagua, Rafael Bustillo Province, Potosí Department  Bolivia

Specimen size: 4.6 × 4.1 × 1.6 cm = 1.8” × 1.6” × 0.6”

Main crystal size: 0.6 × 0.1 cm = 0.2” × 0.0”

Former collection of Carles Curto




Order
Copper
Copper

MP87AH4: Parallel growth of Copper crystals with very well defined faces and edges and skeletal growths on the back. We’ll send to the buyer the original label and also a copy of the computer card with the full text in the collection catalog.
New Cornelia Mine, Ajo, Little Ajo Mountains, Ajo District, Pima County, Arizona  USA

Specimen size: 5.3 × 2.2 × 1 cm = 2.1” × 0.9” × 0.4”

Main crystal size: 4.8 × 1.2 cm = 1.9” × 0.5”

Former collection of Carles Curto


Euro:220 / US$265 / Yen:29060 / AUD$352

Copper. Front
Front
Copper. Rear
Rear
Reservado
Neptunite and Natrolite
Neptunite and Natrolite. Neptunite and Natrolite.
Neptunite and Natrolite

NV56AH4: Neptunite crystals with very well defined terminations, very bright and on a rock matrix coated by white Natrolite. We’ll send to the buyer the original label and also a copy of the computer card with the full text in the collection catalog.
California State Gem Mine (Benitoite Gem Mine), Dallas Gem Mine area, San Benito River headwaters area, New Idria District, Diablo Range, San Benito County, California  USA

Specimen size: 4.8 × 3.3 × 1.8 cm = 1.9” × 1.3” × 0.7”

Main crystal size: 1.7 × 0.5 cm = 0.7” × 0.2”

Former collection of Carles Curto




Order
Dioptase
Dioptase

CP69AH4: Aggregate of prismatic Dioptase crystals with acute rhombohedral terminations. They are translucent, very bright, and have a very deep and uniform color. We’ll send to the buyer the original label and also a copy of the computer card with the full text in the collection catalog.
'Mbumba, Pimbi hill, Mindouli, Mindouli District, Pool Department  Congo DR (Zaire)

Specimen size: 4.9 × 4.3 × 3.3 cm = 1.9” × 1.7” × 1.3”

Main crystal size: 2.8 × 1.4 cm = 1.1” × 0.6”

Former collection of Carles Curto


Euro:380 / US$459 / Yen:50200 / AUD$608

Dioptase. Front
Front
Dioptase. Top
Top
Dioptase.
Reservado


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