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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.

 

America

Silver
Silver. Front
Front
Silver. Rear
Rear
Silver. Side
Side
Silver.
Silver  

CE50AL9: Floater aggregate with polycrystalline growths of hexahedral Silver crystals with very well defined faces and edges, shiny and with small dark coatings of Acanthite. Although the area is known for its Fluorites, specimens from this particular mine are rare and good Silvers even more so.
The specimen comes from the Carles Curto collection, whose label and catalogue entry we will send to the buyer.
Encantada Mine, La Encantada, Municipio Melchor Múzquiz, Coahuila (Coahuila de Zaragoza)  Mexico

Specimen size: 3.5 × 3 × 2.2 cm = 1.38” × 1.18” × 0.87”

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

Former collection of Carles Curto



Order
Silver
Silver  

CP66AL4: Aggregate of cubic Silver crystals with small octahedron faces, some of them quite sharp, with very well defined crystalline shapes and others somewhat more rounded.
The specimen comes from the Carles Curto collection, whose label and catalogue information we will send to the buyer.
Encantada Mine, La Encantada, Municipio Melchor Múzquiz, Coahuila (Coahuila de Zaragoza)  Mexico

Specimen size: 2.4 × 2.3 × 1.5 cm = 0.94” × 0.91” × 0.59”

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

Former collection of Carles Curto



Silver. Front
Front
Silver. Rear
Rear
Sold
Silver
Silver.
Silver  

CB46AL3: Feather-like growth of Silver crystals in which a doubly terminated and very elongated crystal stands out, with the sharp profile of a spinel-law twin. The attached documentation shows that the specimen was extracted from the mine in 1979.
It comes from the Carles Curto collection (no. 1981.55), whose label and information sheet we will send to the buyer.
La Nevada Mine, Cerro San Antonio, San Miguel, Batopilas, Andrés del Río District, Municipio Batopilas, Chihuahua  Mexico

Specimen size: 2.9 × 2.8 × 0.7 cm = 1.14” × 1.10” × 0.28”

Main crystal size: 2.7 × 0.5 cm = 1.06” × 0.20”

Former collection of Carles Curto



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Silver
Silver  

CB47AJ7: Dendritic aggregate on matrix of very elongated Silver crystals that form parallel growths and have very well defined octahedral terminations.
La Nevada Mine, Cerro San Antonio, San Miguel, Batopilas, Andrés del Río District, Municipio Batopilas, Chihuahua  Mexico

Specimen size: 4.1 × 3.5 × 2.3 cm = 1.61” × 1.38” × 0.91”

Main crystal size: 1.2 × 0.1 cm = 0.47” × 0.04”

Former collection of Carles Curto



Silver. Front
Front
Silver. Rear
Rear
Sold
Quartz (variety amethyst) with Calcite and Sphalerite
Quartz (variety amethyst) with Calcite and Sphalerite. Quartz (variety amethyst) with Calcite and Sphalerite.
Quartz (variety amethyst) with Calcite and Sphalerite  

CE37AJ7: Elongated amethyst crystals with slightly curved faces and edges. They are translucent, have a very intense and uniform color, are on Sphalerite matrix and are partially coated by white scalenohedral Calcite crystals. The amethyst of such quality is very uncommon at Naica.
Naica, Municipio Saucillo, Chihuahua  Mexico

Specimen size: 7.5 × 5.4 × 3.9 cm = 2.95” × 2.13” × 1.54”

Main crystal size: 2.6 × 0.6 cm = 1.02” × 0.24”

Former collection of Carles Curto

Calcite fluorescence short UV & minor fluorescence long UV



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Arsenopyrite
Arsenopyrite  

CM76AI3: Floater druse of sharp bright crystals with simple forms and excellent terminal faces. The samples of Arsenopyrite from Concepción del Oro, relatively common some time ago, are currently very rare.
Bonanza Mine, Concepción del Oro, Municipio Concepción del Oro, Zacatecas  Mexico

Specimen size: 5.8 × 5.1 × 3.7 cm = 2.28” × 2.01” × 1.46”

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

Former collection of Carles Curto



Arsenopyrite. Arsenopyrite.
Sold
Topaz
Topaz. Front
Front
Topaz. Side
Side
Topaz.
Topaz  

CF27AL3: Group of very sharp prismatic Topaz crystals, on matrix, with well defined faces and edges, bright, transparent and with color zoning, very deep in the terminations.
The specimen comes from the Carles Curto collection (ref. 1997.05), whose label and information sheet we will send to the buyer.
Tepetate, Municipio Villa de Arriaga, San Luis Potosí  Mexico

Specimen size: 4.9 × 2.8 × 3.2 cm = 1.93” × 1.10” × 1.26”

Main crystal size: 1.3 × 0.6 cm = 0.51” × 0.24”

Fluorescence on the matrix (short and long UV)

Former collection of Carles Curto



Sold
Baryte with Pyrite
Baryte with Pyrite  

CJ14AL5: Druse of Baryte crystals with very well defined faces and edges, transparent, very bright and of a very intense and uniform orange color, with two small cubic Pyrite crystals. This piece, from a typical locality for quality Baryte, comes from the Carles Curto collection, whose label and catalogue entry we will send to the buyer.
Eagle Mine, Gilman, Gilman District, Eagle County, Colorado  USA

Specimen size: 4.7 × 3.6 × 1.6 cm = 1.85” × 1.42” × 0.63”

Main crystal size: 1 × 0.6 cm = 0.39” × 0.24”

Former collection of Carles Curto



Baryte with Pyrite. Baryte with Pyrite.
Sold
Rutile (variety sagenite) with Siderite and limonite
Rutile (variety sagenite) with Siderite and limonite. Rutile (variety sagenite) with Siderite and limonite.
Rutile (variety sagenite) with Siderite and limonite  

CT76AL4: Reticular aggregate (sagenite variety) of twinned, translucent, lustrous red crystals of Rutile with intense reflections, on matrix of partially limonitized former rhombohedral Siderite crystals.
The specimen comes from the Carles Curto collection, whose label and catalogue information we will send to the buyer.
Boiling Springs, Cleveland County, North Carolina  USA

Specimen size: 5.8 × 5.7 × 2.3 cm = 2.28” × 2.24” × 0.91”

Main crystal size: 1.4 × 0.1 cm = 0.55” × 0.04”

Former collection of Carles Curto



Sold
Strontianite with Fluorite
Strontianite with Fluorite  

CN46AL3: Centered aggregates of white acicular Strontianite crystals, with very well defined faces and edges and implanted in a lilac Fluorite matrix. The specimen shows the classic morphology for this locality, a reference specimen for the species.
From the Carles Curto collection (ref. 1985.38), whose label and information sheet we will send to the buyer.
Minerva I Mine, Ozark-Mahoning group, Cave-in-Rock Sub-District, Hardin County, Illinois  USA

Specimen size: 4.8 × 3.6 × 3 cm = 1.89” × 1.42” × 1.18”

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

Minor fluorescence long & short UV

Former collection of Carles Curto



Strontianite with Fluorite. Strontianite with Fluorite.
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Copper
Copper.
Copper  

CL11AL3: A very aerial tree-like floater aggregate composed of slightly elongated rhombododecahedral crystals of Copper with pronounced curved edges.
The specimen comes from the Carles Curto collection (no. 1976.46), whose label and information sheet we will send to the buyer.
Eagle Harbor, Keweenaw County, Michigan  USA (±1976)

Specimen size: 2.6 × 1.7 × 0.8 cm = 1.02” × 0.67” × 0.31”

Main crystal size: 1.6 × 1 cm = 0.63” × 0.39”

Former collection of Carles Curto



Order
Franklinite with Calcite
Franklinite with Calcite  

CR66AJ0: Octahedral Franklinite crystal on matrix with the classical shape of the samples from Franklin in the sixties of the last century. It has very well defined faces and edges which are slightly curved. An American classic from the type locality for the species.
The sample is from the Carles Curto collection whose label and catalog card we will send to the buyer.
Franklin, Franklin Mining District, Sussex County, New Jersey  USA

Specimen size: 2.5 × 2.5 × 2.1 cm = 0.98” × 0.98” × 0.83”

Former collection of Carles Curto



Franklinite with Calcite. Front
Front
Franklinite with Calcite. Rear
Rear
Order
Inesite with Calcite
Inesite with Calcite. Inesite with Calcite.
Inesite with Calcite  

CT96AI3: Groups of Inesite crystals with very well defined simple forms, bright and with a very intense pink color, on a matrix of the same Inesite with minor Calcite. The locality is an American classic for the species. The sample is from a J. Fabre exchange with the collection of duplicates of Joaquín Folch in the year 1987, when this collection was not well known under this name.
Hale Creek Mine, Mad River Rock, Coastal Range, Trinity County, California  USA (1973)

Specimen size: 6.4 × 4 × 3.5 cm = 2.52” × 1.57” × 1.38”

Main crystal size: 1.2 × 0.4 cm = 0.47” × 0.16”

Former collection of Carles Curto



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Rutile with Muscovite
Rutile with Muscovite  

CG76AJ7: Reticular aggregate of twinned crystals that are translucent, bright, with a very intense red color and on a matrix of tabular Muscovite crystals.
Boiling Springs, Cleveland County, North Carolina  USA

Specimen size: 3.4 × 2.9 × 2 cm = 1.34” × 1.14” × 0.79”

Main crystal size: 1 × 0.3 cm = 0.39” × 0.12”

Former collection of Carles Curto



Rutile with Muscovite. Rutile with Muscovite.
Sold
Gold with Quartz
Gold with Quartz. Gold with Quartz.
Gold with Quartz  

CM86AH6: Group of much flattened Gold crystals on a Quartz matrix. They have very neat contour, well defined faces and edges, and are very bright. The sample is from the first (1989) of the Gold at the Eagle’s Nest mine. We’ll send to the buyer the original label and also a copy of the computer card with the full collection catalog text.
Eagle's Nest Mine, Sage Hill, Michigan Bluff District, Placer County, California  USA (±1989)

Specimen size: 1.5 × 1 × 0.8 cm = 0.59” × 0.39” × 0.31”

Former collection of Carles Curto



Sold
Silver
Silver  

CC56AL4: Aggregates of very elongated, fibrous Silver crystals, some of them with pronounced curvatures and fine dendritic growths and with small, poorly defined, Acanthite crystals.
The specimen comes from the Carles Curto collection, whose label and catalogue information we will send to the buyer.
Keeley-Frontier Mine, South Lorrain Township, Cobalt-Gowganda Region, Timiskaming District, Ontario  Canada (±1966)

Specimen size: 2.1 × 2 × 1.2 cm = 0.83” × 0.79” × 0.47”

Former collection of Carles Curto



Silver. Front
Front
Silver. Rear
Rear
Order
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 = 0.67” × 0.59” × 0.47”

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

Calcite fluorescent short UV

Former collection of Carles Curto



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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 = 1.81” × 1.61” × 0.63”

Main crystal size: 0.6 × 0.1 cm = 0.24” × 0.04”

Former collection of Carles Curto



Paravauxite. Paravauxite.
Order
Franckeite with Stannite and Zinkenite
Franckeite with Stannite and Zinkenite. Franckeite with Stannite and Zinkenite.
Franckeite with Stannite and Zinkenite  

CF69AJ4: Radial groups of very sharp and well defined flattened prismatic Franckeite crystals with an implanted dipyramidal Stannite crystal and small acicular Zinkenite crystals.
The sample is from the Carles Curto collection whose label and catalog card we will send to the buyer.
San José Mine, Oruro City, Cercado Province, Oruro Department  Bolivia (±1987)

Specimen size: 7.6 × 3.9 × 5.6 cm = 2.99” × 1.54” × 2.20”

Main crystal size: 1.2 × 1 cm = 0.47” × 0.39”

Former collection of Carles Curto



Order

Spain

Sphalerite
Sphalerite  

CA67AL9: Spinel-law twin, with very well defined crystal forms and with curvatures on the faces and edges. Translucent, with good luster and a very intense and vivid red color.
The specimen comes from the Carles Curto collection, whose label and catalogue entry we will send to the buyer.
Las Mánforas Mine, Áliva mining area, Camaleño, Comarca Liébana, Cantabria  Spain (±1974)

Specimen size: 3.9 × 3.7 × 2.5 cm = 1.54” × 1.46” × 0.98”

Main crystal size: 3 × 3 cm = 1.18” × 1.18”

Former collection of Carles Curto

€260 / US$308 / JPY32710 / AUD$424

Sphalerite. Front
Front
Sphalerite. Light behind
Light behind
Reservado
Baryte
Baryte. Front
Front
Baryte. Rear
Rear
Baryte.
Baryte  

CC16AL8: Clustered aggregates of very elongated flat crystals translucent and white with gray tones and with small Pyrite crystals. From an already extinct locality from which it is very difficult to find specimens today, espècially of this quality.
The specimen comes from the Carles Curto collection, whose label and catalogue entry we will send to the buyer.
Leonor Mine, Osor Mines, Osor, Comarca La Selva, Girona / Gerona, Catalonia  Spain

Specimen size: 8 × 6.6 × 4.4 cm = 3.15” × 2.60” × 1.73”

Main crystal size: 2.7 × 0.7 cm = 1.06” × 0.28”

Minor fluorescence long & short UV

Former collection of Carles Curto



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Azurite
Azurite  

CT9AJ7: Equant Azurite crystals with a thick lenticular shape. They are bright with a very intense color and are on matrix with Quartz crystals.
Berta Quarry, Can Domènech Hill, Roques Blanques Mountains, Sant Cugat del Vallès-El Papiol, Comarca Vallès Occidental / Baix Llobregat, Barcelona, Catalonia  Spain (05/1971)

Specimen size: 1.8 × 1.7 × 1.7 cm = 0.71” × 0.67” × 0.67”

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

Former collection of Carles Curto



Azurite.
Order
Azurite
Azurite.
Azurite  

CV11AJ7: Equant Azurite crystals with a thick lenticular shape. They are bright with a very intense color and are on matrix with Quartz crystals.
Berta Quarry, Can Domènech Hill, Roques Blanques Mountains, Sant Cugat del Vallès-El Papiol, Comarca Vallès Occidental / Baix Llobregat, Barcelona, Catalonia  Spain (05/1971)

Specimen size: 2 × 1 × 1.3 cm = 0.79” × 0.39” × 0.51”

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

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 = 1.85” × 1.42” × 1.26”

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

Former collection of Carles Curto



Almandine with Quartz. Almandine with Quartz.
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Gahnite with Quartz
Gahnite with Quartz. Front
Front
Gahnite with Quartz. Side
Side
Gahnite with Quartz  

CB14AJ7: Octahedral Gahnite crystals on a Quartz matrix. They are sharp, have the very well defined Spinel-law twin, are quite large for the species and have a uniform grayish-blue color.
Victoria Mine, Arrés, Vall d'Aran, Lleida / Lérida, Catalonia  Spain

Specimen size: 6.1 × 3.5 × 2.7 cm = 2.40” × 1.38” × 1.06”

Main crystal size: 1.7 × 1.3 cm = 0.67” × 0.51”

Former collection of Carles Curto



Sold
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 = 1.61” × 1.57” × 0.87”

Fluorescent long & short UV

Former collection of Carles Curto



Calcite (variety cobaltoan). Calcite (variety cobaltoan).
Sold
Prehnite
Prehnite.
Prehnite  

NC16AL3: Globular growths, on matrix, with bright, translucent crystals and a very intense and uniform apple-green color. A Spanish classic.
The specimen comes from the Carles Curto collection (no. 2002.03), whose label and information sheet we will send to the buyer.
Oficarsa Quarry, De las Culebras Hill, Carchelejo, Cárcheles, Comarca Sierra Mágina, Jaén, Andalusia  Spain (10/2001)

Specimen size: 3.8 × 3 × 1.9 cm = 1.50” × 1.18” × 0.75”

Former collection of Carles Curto



Sold
Aragonite (variety cuprian)
Aragonite (variety cuprian)  

CT36AH6: Coralloid and botryoidal growths with micro-acicular surfaces. The nice blue color is due to copper salts inclusions. We’ll send to the buyer the original label and also a copy of the computer card with the full collection catalog text.
La Profunda Mine, Collada de Cármenes, Cármenes, Comarca Los Argüellos, León, Castile and León  Spain (04/1970)

Specimen size: 7.4 × 6.7 × 3.9 cm = 2.91” × 2.64” × 1.54”

Former collection of Carles Curto



Aragonite (variety cuprian).
Sold
Quartz with Cinnabar
Quartz with Cinnabar.
Quartz with Cinnabar  

CC12AJ7: Clear Quartz crystals with very well defined faces and edges. One of them is clearly dominant with an an evident Cinnabar inclusion. They are on matrix, with crystals and foliation surfaces of Cinnabar.
Distrito Minero de Almadén, Almadén, Comarca Valle de Alcudia, Ciudad Real, Castilla-La Mancha  Spain

Specimen size: 2.6 × 2 × 1.2 cm = 1.02” × 0.79” × 0.47”

Main crystal size: 1 × 0.3 cm = 0.39” × 0.12”

Former collection of Carles Curto



Sold
Cinnabar
Cinnabar  

CP97AJ7: Parallel growths of rhombohedral shaped Cinnabar crystals, large for the locality, with slightly curved faces and edges, with Quartz and on matrix.
Almaden Mine, Almadén, Comarca Valle de Alcudia, Ciudad Real, Castilla-La Mancha  Spain (1968)

Specimen size: 6 × 5.7 × 5.4 cm = 2.36” × 2.24” × 2.13”

Main crystal size: 1.1 × 1 cm = 0.43” × 0.39”

Former collection of Carles Curto



Cinnabar. Cinnabar.
Cinnabar.
Sold
Pyromorphite
Pyromorphite. Front
Front
Pyromorphite. Rear
Rear
Pyromorphite  

CC49AJ7: Distorted Pyromorphite crystals, with prismatic and pyramidal faces displaced during the growth process. They are very bright and have the best intense grass-green color, typical of the mine.
El Horcajo Mines, El Horcajo, Almodóvar del Campo, Comarca Campo de Calatrava, Ciudad Real, Castilla-La Mancha  Spain

Specimen size: 4.1 × 2.7 × 1.6 cm = 1.61” × 1.06” × 0.63”

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

Minor fluorescence short UV

Former collection of Carles Curto



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Bismuth
Bismuth  

CD37AJ7: Parallel growths of skeletal faces and foliation surfaces of native Bismuth, very bright and on a Quartz matrix. A Spanish classic.
Dolores Mine, Dolores Mining Group, Las Lomas, Pozoblanco, Comarca Los Pedroches, Córdoba, Andalusia  Spain

Specimen size: 5 × 3.6 × 2.9 cm = 1.97” × 1.42” × 1.14”

Former collection of Carles Curto



Bismuth. Bismuth.
Sold
Cerussite
Cerussite. Cerussite.
Cerussite  

CC86AJ7: Very aerial stalactitic growths of white Cerussite crystals with very well defined, almost globular, curvatures. A rarity at Linares, obtained at the mine in 1968.
Linares, Comarca Sierra Morena, Jaén, Andalusia  Spain (1968)

Specimen size: 5 × 4.1 × 2.4 cm = 1.97” × 1.61” × 0.94”

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

Fluorescent long & short UV

Former collection of Carles Curto



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Jarosite
Jarosite  

CB26AI3: Jarosite crystals on matrix with very well defined faces and edges, transparent and very bright.
Socavón Santa Bárbara (Túnel El Arteal), Almagrera Range, Cuevas del Almanzora, Comarca Levante Almeriense, Almería, Andalusia  Spain (08/1997)

Specimen size: 6.2 × 5.3 × 1.4 cm = 2.44” × 2.09” × 0.55”

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

Former collection of Carles Curto



Jarosite. Jarosite.
Jarosite.
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Vanadinite (variety endlichite)
Vanadinite (variety endlichite). Vanadinite (variety endlichite).
Vanadinite (variety endlichite)  

CP14AJ7: Spheroidal and globular aggregates of Vanadinite (endlichite variety) crystals that are strongly curved, very bright with an attractive reddish brown color and are on matrix. The Vanadinite from Santa Marta are a reference for the species in Spanish mineralogy.
Santa Marta, Comarca Tierra de Barros, Badajoz, Extremadura  Spain

Specimen size: 4.8 × 3.4 × 2 cm = 1.89” × 1.34” × 0.79”

Former collection of Carles Curto



Sold

Europe

Epidote
Epidote  

CA11AL8: A sheaf-like aggregate of elongated Epidote crystals with good polycrystalline terminations, translucent, lustrous and with a very deep green color.
The specimen from a known but little publicized Belgian locality comes from the Carles Curto collection, whose label and catalogue entry we will send to the buyer.
Quenast, Rebecq, Nivelles District, Walloon Brabant Province, Wallonne Region  Belgium (±2001)

Specimen size: 3.7 × 2.8 × 1.9 cm = 1.46” × 1.10” × 0.75”

Main crystal size: 2.6 × 0.4 cm = 1.02” × 0.16”

Former collection of Carles Curto



Epidote. Front
Front
Epidote. Rear
Rear
Order
Chalcopyrite
Chalcopyrite. Front
Front
Chalcopyrite. Rear
Rear
Chalcopyrite  

CB14AL8: Aggregate of twinned disphenoidal (pseudotetrahedral) crystals of Chalcopyrite, with slight iridescence, on matrix.
The specimen from one of the most classic German localities for the species comes from the Carles Curto collection, whose label and catalogue entry we will send to the buyer.
Herdorf, Siegerland, Rhineland-Palatinate/Rheinland-Pfalz  Germany

Specimen size: 3.4 × 2.4 × 1.9 cm = 1.34” × 0.94” × 0.75”

Main crystal size: 2.2 × 1.7 cm = 0.87” × 0.67”

Former collection of Carles Curto



Order
Pyromorphite
Pyromorphite  

CD14AJ7: Parallel aggregates of elongated prismatic and doubly terminated Pyromorphite crystals, with slightly curve edges. They are bright and have a pale brown, slightly pinkish, color. A German classic.
Friedrichssegen Mine, Frücht, Bad Ems District, Lahn Valley, Rhineland-Palatinate/Rheinland-Pfalz  Germany

Specimen size: 2.7 × 1.6 × 1.2 cm = 1.06” × 0.63” × 0.47”

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

Minor fluorescence long & short UV

Former collection of Carles Curto



Pyromorphite.
Order
Freieslebenite
Freieslebenite.
Freieslebenite  

CF96AJ7: Aggregate of short prismatic Freieslebenite crystals, a typical shape for the locality. They are very bright and have a fine growth striation. The crystals are not perfect and this is noted on the price, even considering the rarity of the species, coming from the type locality and the crystal size
Himmelsfürst Mine, Brand-Erbisdorf, Freiberg District, Erzgebirgskreis, Saxony/Sachsen  Germany

Specimen size: 1.6 × 1.4 × 0.8 cm = 0.63” × 0.55” × 0.31”

Main crystal size: 0.6 × 0.5 cm = 0.24” × 0.20”

Type locality

Former collection of Carles Curto



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Phosgenite
Phosgenite  

CA47AL8: Group of tabular Phosgenite crystals one of them clearly dominant, transparent, with a kind of brown-smoky color and much better luster than usual in specimens from this locality, one of the most classic Italian localities for the species.
It comes from the Carles Curto collection whose label and catalogue entry we will send to the buyer.
Monteponi Mine, Iglesias, Carbonia-Iglesias Province, Sardinia/Sardegna  Italy

Specimen size: 3.8 × 3.2 × 1.4 cm = 1.50” × 1.26” × 0.55”

Main crystal size: 3.8 × 3.2 cm = 1.50” × 1.26”

Fluorescent long & short UV

Former collection of Carles Curto



Phosgenite. Front
Front
Phosgenite. Front
Front

Top
Sold
Microcline
Microcline. Front
Front
Microcline. Side
Side
Microcline  

MX96AL3: Very sharp elongated Microcline crystal, partially doubly terminated, on a base of the same mineral, with very well defined crystalline forms and with a very clearly seen Baveno-law twin. An Italian alpine classic.
The specimen comes from the Carles Curto collection (no. 1970.03), whose label and information sheet we will send to the buyer.
Oltrefiume, Baveno, Maggiore Lake, Verbano-Cusio-Ossola Province, Piedmont (Piemonte)  Italy (±1970)

Specimen size: 8 × 3 × 3.3 cm = 3.15” × 1.18” × 1.30”

Main crystal size: 7.9 × 2.4 cm = 3.11” × 0.94”

Former collection of Carles Curto



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Quartz
Quartz  

CR86AJ7: Parallel aggregate of doubly terminated clear Quartz crystals. They are very bright and some of them have fluid inclusions and window (fenster) growths. The sample is from a locality that is a classic for Italian mineralogy.
Porretta quartz sites, Reno Valley, Alto Reno Terme (Porretta Terme), Bologna Province, Emilia-Romagna  Italy

Specimen size: 9 × 5.5 × 3.5 cm = 3.54” × 2.17” × 1.38”

Main crystal size: 4.7 × 3 cm = 1.85” × 1.18”

Former collection of Carles Curto



Quartz. Front
Front
Quartz. Side
Side
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Pyrite with Magnetite
Pyrite with Magnetite. Pyrite with Magnetite.
Pyrite with Magnetite  

CD6AJ7: Very sharp octahedral Pyrite crystals that are neatly isolated, one of them clearly dominant, and are on matrix with black dodecahedral Magnetite crystals. A classic of Italian mineralogy.
Brosso Mine, Cálea, Léssolo, Canavese District, Metropolitan City of Turin Province, Piedmont (Piemonte)  Italy

Specimen size: 5.7 × 4.2 × 2.5 cm = 2.24” × 1.65” × 0.98”

Main crystal size: 1.7 × 1.6 cm = 0.67” × 0.63”

Former collection of Carles Curto



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Cuprite
Cuprite  

CG57AL3: Polycrystalline complete floater of very sharp octahedral Cuprite crystals, with brilliant, slightly curved faces and edges and with minor crystals of Marshite
The specimen comes from the Carles Curto collection (no. 2011.36), whose label and information sheet we will send to the buyer.
Poteryaevskoe Mine, Rubtsovsky District, Altai Krai  Russia (2011)

Specimen size: 4.2 × 3.3 × 3.2 cm = 1.65” × 1.30” × 1.26”

Main crystal size: 3.2 × 3.2 cm = 1.26” × 1.26”

Fluorescent short UV

Former collection of Carles Curto



Cuprite. Front
Front
Cuprite. Rear
Rear
Order
Copper
Copper. Front
Front
Copper. Rear
Rear
Copper  

CN16AI3: Very elongated single Copper crystal with the Spinel law twin. The sample is from a Russian locality that is a great classic but of which there are very samples.
Krasnotur'insk (Bogolovsk), Ekaterinburg (Sverdlovsk), Sverdlovsk Oblast, Ural  Russia

Specimen size: 5.2 × 1.7 × 1 cm = 2.05” × 0.67” × 0.39”

Former collection of Carles Curto



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Brookite with Quartz
Brookite with Quartz  

CD16AI3: Very sharp laminar Brookite crystals that are transparent and bright with an orange brown color. They are implanted on a group of doubly terminated Quartz crystals with polycrystalline growths.
Puiva Mount, Saranpaul, Khanty-Mansi Okrug, Tyumen Oblast  Russia

Specimen size: 7.8 × 4 × 2.9 cm = 3.07” × 1.57” × 1.14”

Main crystal size: 1.8 × 1 cm = 0.71” × 0.39”

Former collection of Carles Curto



Brookite with Quartz. Brookite with Quartz.
Order
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 = 0.94” × 0.83” × 0.63”

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

Former collection of Carles Curto



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Azurite
Azurite  

CQ87AI5: Group, on matrix, of lenticular crystals, one of them clearly dominant, with very well defined faces and edges, bright with a color that is intense, very much more vivid than usual for the locality.
The sample is from the Carles Curto collection whose label and catalog card we’ll send to the buyer.
Chessy-les-Mines, Les Bois d'Oingt, Villefranche-sur-Saône, Rhône, Auvergne-Rhône-Alpes  France

Specimen size: 3.5 × 3 × 1.5 cm = 1.38” × 1.18” × 0.59”

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

Former collection of Carles Curto



Azurite. Front
Front
Azurite. Rear
Rear
Order
Pyromorphite
Pyromorphite. Pyromorphite.
Pyromorphite  

MR37AH4: Radial and fan-like aggregates, on a Quartz matrix, of mostly acicular Pyromorphite crystals with a very intense and uniform green color. An European classic seen only from old finds. 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.
Saint-Salvy Mine, Saint-Salvy-de-la-Balme, Tarn, Occitanie  France

Specimen size: 7.5 × 5.4 × 2.9 cm = 2.95” × 2.13” × 1.14”

Main crystal size: 0.8 × 0.3 cm = 0.31” × 0.12”

Former collection of Carles Curto



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Wavellite
Wavellite  

CT13AJ7: Radial aggregates of laminar Wavellite crystals with a silky luster and a creamy-brown color. They are very well defined and are on a sandstone matrix. The sample is a rarity due to its antiquity (the fifties of the past century) and that it is from the type locality for the species.
High Down Quarry (Heddon Quarry), Heddon Valley, West Buckland, North Devon District, Devon  England / United Kingdom

Specimen size: 5 × 2.8 × 3.6 cm = 1.97” × 1.10” × 1.42”

Type locality

Former collection of Carles Curto



Wavellite.
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Silver
Silver. Front
Front
Silver. Rear
Rear
Silver  

CT86AJ7: Spongy aggregate of native Silver with clearly enhanced very elongated and hooked Silver crystals with octahedral terminal faces. The sample is from a classic Czech Republic locality.
Uranium Mine number 21 (shaft number 21), Háje, Příbram, Central Bohemia Region, Bohemia  Czech Republic

Specimen size: 5.6 × 3.3 × 2.6 cm = 2.20” × 1.30” × 1.02”

Main crystal size: 1 × 0.1 cm = 0.39” × 0.04”

Former collection of Carles Curto



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Opal (variety hyalite)
Opal (variety hyalite)  

CC10AI3: Clear and colorless botryoidal aggregate that is very bright, on matrix and is fluorescent with an UV lamp. A precursor of the current hyalites from Central Europe.
Valeč, Doupov, Karlovy Vary Region, Bohemia  Czech Republic

Specimen size: 4.2 × 3.4 × 2.6 cm = 1.65” × 1.34” × 1.02”

Fluorescent short UV

Former collection of Carles Curto



Opal (variety hyalite). Opal (variety hyalite).
Order
Brandtite
Brandtite. Brandtite.
Brandtite  

CH13AJ7: Very well defined fan-like growths, on matrix, of white crystals of Brandtite, a very rare calcium and magnesium arsenate. The sample is from the type locality for the species.
Harstigen Mine, Pajsberg, Persberg District, Filipstad, Värmland  Sweden

Specimen size: 4.4 × 2.8 × 1.2 cm = 1.73” × 1.10” × 0.47”

Type locality

Former collection of Carles Curto



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Africa

Wulfenite
Wulfenite  

CB59AL8: Very sharp lamellar crystals of Wulfenite with notably distinct dipyramid faces, great luster and a color between yellow and cream. On matrix.
The specimen, from one of the most classic localities for the species, comes from the Carles Curto collection whose label and catalogue entry we will send to the buyer.
Tsumeb Mine, Tsumeb, Otjikoto Region  Namibia

Specimen size: 4.6 × 3.1 × 2.1 cm = 1.81” × 1.22” × 0.83”

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

Former collection of Carles Curto



Wulfenite. Wulfenite.
Order
Malachite after Azurite with Cerussite
Malachite after Azurite with Cerussite.
Malachite after Azurite with Cerussite  

CK13AL4: Malachite pseudomorphs after elongated Azurite crystals with sharp faces and edges some of them doubly terminated. On matrix, with unaltered Azurite crystals and Cerussite twins.
The specimen comes from the Carles Curto collection, whose label and catalogue information we will send to the buyer.
Tsumeb Mine, Tsumeb, Otjikoto Region  Namibia

Specimen size: 3.3 × 2.7 × 1.6 cm = 1.30” × 1.06” × 0.63”

Main crystal size: 1.2 × 0.4 cm = 0.47” × 0.16”

Former collection of Carles Curto

Cerussite minor fluorescence long & short UV



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Smithsonite
Smithsonite  

CR46AI3: Druse of rhombohedral Smithsonite crystals on matrix. They are well defined with fine growth striations and are translucent, bright and have a uniform and attractive pinkish color.
Tsumeb Mine, Tsumeb, Otjikoto Region  Namibia

Specimen size: 4.2 × 3.7 × 3.1 cm = 1.65” × 1.46” × 1.22”

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

Former collection of Carles Curto



Smithsonite.
Order
Germanite
Germanite. Front
Front
Germanite. Side
Side
Germanite  

CA14AJ7: Typical granular Germanite aggregate with a polished surface to better appreciate the characteristics of this rare copper, iron and germaniun sulphosalt. With a pinkish gray color and is with Renierite that has a more intense pink color, and black Tennantite. The sample is from the type locality for the species.
Tsumeb Mine, Tsumeb, Otjikoto Region  Namibia (±1981)

Specimen size: 6.2 × 3.8 × 2.3 cm = 2.44” × 1.50” × 0.91”

Type locality

Former collection of Carles Curto



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Arfvedsonite with Orthoclase
Arfvedsonite with Orthoclase  

CB46AJ7: Very sharp Arfvedsonite crystal with good terminal faces and with parallel growths. It is very aerial and implanted on a matrix of twinned Orthoclase crystals. The sample is one of the first well-known examples found of this species at Malawi, at the beginning of the XXI century.
Mount Malosa, Zomba District  Malawi

Specimen size: 4.2 × 4.2 × 4.1 cm = 1.65” × 1.65” × 1.61”

Main crystal size: 3 × 1.9 cm = 1.18” × 0.75”

Former collection of Carles Curto



Arfvedsonite with Orthoclase. Front
Front
Arfvedsonite with Orthoclase. Side
Side
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Senegalite with Turquoise and Crandallite
Senegalite with Turquoise and Crandallite. Senegalite with Turquoise and Crandallite.
Senegalite with Turquoise and Crandallite  

CR27AJ7: Spheroidal growths of very sharp Senegalite crystals with very well defined faces and edges, bright with intense yellow color and on matrix with pale blue Turquoise and reddish brown Crandallite. The sample is from the type locality for the species.
Kourou Diakouma Mount, Saraya, Tambacounda Region  Senegal (2007-2008)

Specimen size: 5.2 × 3.3 × 3.6 cm = 2.05” × 1.30” × 1.42”

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

Type locality

Former collection of Carles Curto



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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 = 1.93” × 1.69” × 1.30”

Main crystal size: 2.8 × 1.4 cm = 1.10” × 0.55”

Former collection of Carles Curto



Dioptase. Front
Front
Dioptase. Top
Top
Dioptase.
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Gold
Gold.
Gold  

CA86AJ7: Spongy aggregates and small acicular Gold crystals tha are very bright and on matrix with white Quartz.
Sheba Mine, Barberton, Ehlanzeni District, Mpumalanga Province  South Africa

Specimen size: 3.5 × 2.5 × 1.7 cm = 1.38” × 0.98” × 0.67”

Former collection of Carles Curto



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Asia - Australia

Asia

Beryl (variety aquamarine) on Albite
Beryl (variety aquamarine) on Albite  

MV87AH6: Parallel growth of two doubly terminated Beryl (aquamarine variety) crystals, with a flat termination on one end and very well defined acute pyramids on the other end. They are transparent, very bright with a pale and uniform blue color and are on a matrix of tabular Albite crystals. We’ll send to the buyer the original label and also a copy of the computer card with the full collection catalog text.
Shengus (Shingus), Baltistan District, Gilgit-Baltistan (Northern Areas)  Pakistan (±1985)

Specimen size: 3.6 × 3.5 × 1.7 cm = 1.42” × 1.38” × 0.67”

Main crystal size: 3.6 × 1.2 cm = 1.42” × 0.47”

Former collection of Carles Curto



Beryl (variety aquamarine) on Albite. Front
Front
Beryl (variety aquamarine) on Albite. Rear
Rear
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Beryllonite
Beryllonite. Front
Front
Beryllonite. Rear
Rear
Beryllonite. Bottom
Bottom
Beryllonite  

CQ67AL4: Parallel growth of very elongated snow-white crystals, with polycrystalline pyramidal terminations, and pearly luster. Beryllonite, a phosphate of sodium and beryllium, is one of the rare species that is well crystallized in Pakistani pegmatites.
The specimen comes from the Carles Curto collection, whose label and catalogue information we will send to the buyer.
Nagar, Hunza Valley, Nagar District, Gilgit-Baltistan (Northern Areas)  Pakistan

Specimen size: 7.4 × 3.5 × 2.5 cm = 2.91” × 1.38” × 0.98”

Fluorescent long & short UV

Former collection of Carles Curto



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Löllingite with Dolomite
Löllingite with Dolomite  

CT26AI7: Rosettes of lenticular Löllingite crystals with polycrystalline growths, very well defined for the species. They are bright and have a single rhombohedral Dolomite crystal attached. The sample is from the Carlos Curto collection whose original label and also a copy of the computer card with the full text in the collection catalog we’ll send to the buyer.
Huanggang Mines, Hexigten Banner (Kèshíkèténg Qí), Ulanhad (Chifeng), Inner Mongolia Autonomous Region  China (±2014)

Specimen size: 5.4 × 4.6 × 3.8 cm = 2.13” × 1.81” × 1.50”

Calcite fluorescent short UV

Former collection of Carles Curto



Löllingite with Dolomite. Front
Front
Löllingite with Dolomite. Rear
Rear
Sold
Babingtonite with Prehnite
Babingtonite with Prehnite. Front
Front
Babingtonite with Prehnite. Rear
Rear
Babingtonite with Prehnite.
Babingtonite with Prehnite  

CB69AI3: Very aerial group of very sharp and flattened crystals, a lot of them doubly terminated. They are bright with a deep black color and are on a matrix of botryoidal Prehnite. These Chinese Babingtonites have almost disappeared from the mineral market and the best are those that first appeared.
Babingtonite occurrences, Qiaojia, Zhaotong Prefecture, Yunnan Province  China (±2008)

Specimen size: 8.3 × 4 × 3.2 cm = 3.27” × 1.57” × 1.26”

Main crystal size: 2.3 × 1.7 cm = 0.91” × 0.67”

Former collection of Carles Curto



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Scheelite
Scheelite  

CE13AJ7: Floater and complete dipyramidal Scheelite crystal. It is translucent, bright, and has the rich color typical of the already mythical Tae Wha mine.
Tae Hwa Mine, Neungam-ri, Angseong-myeon, Chungju, Chungcheongbukdo  South Korea

Specimen size: 2.8 × 1.8 × 1.5 cm = 1.10” × 0.71” × 0.59”

Fluorescent short UV

Former collection of Carles Curto



Scheelite.
Sold

Australia

Copper
Copper. Copper.
Copper  

CE16AL3: Floater group of Copper crystals with an unusual cubic habit, beveled by the rhombododecahedron. The specimen comes from a classic Australian deposit.
The specimen comes from the Carles Curto collection (no. 2007.09), whose label and information sheet we will send to the buyer.
Boddington Mine, Boddington, Peel, Western Australia  Australia

Specimen size: 5.6 × 5.3 × 2.7 cm = 2.20” × 2.09” × 1.06”

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

Former collection of Carles Curto



Order
Atacamite
Atacamite  

CX13AJ7: Groups, on matrix of elonagated Atacamite crystals with very well defined faces and edges and perfect terminal faces. They are bright and have a very deep color. The sample is from one of the more classic, even mythical, localities for the species.
Wallaroo Mine, Kadina, Yorke Peninsula, South Australia  Australia

Specimen size: 2 × 1.4 × 0.9 cm = 0.79” × 0.55” × 0.35”

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

Former collection of Carles Curto



Atacamite. Front
Front
Atacamite. Top
Top
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