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ND56AJ7: Chalcopyrite with Dolomite and Calcite
Sharp disphenoidal Chalcopyrite crystals with a pseudotetrahedral shape. They are twinned, very bright and on a matrix with Dolomite and Calcite. This kind of Chalcopyrite was not known at the locality until now.
Salomón Cut, bench 290, Rio Tinto Mines, Minas de Riotinto, Comarca Cuenca Minera, Huelva, Andalusia  Spain
Specimen size: 6.2 × 4.2 × 6.4 cm = 2.44” × 1.65” × 2.52”
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NH56AJ7: Chalcopyrite with Dolomite and Calcite
Sharp disphenoidal Chalcopyrite crystals with a pseudotetrahedral shape. They are twinned and have a superficial metallic patina and are on a matrix with Dolomite and Calcite. The sample has been sawed on the lower part to reduce the matrix. This kind of Chalcopyrite was not known at the locality until now.
Salomón Cut, bench 290, Rio Tinto Mines, Minas de Riotinto, Comarca Cuenca Minera, Huelva, Andalusia  Spain
Specimen size: 7.8 × 5.6 × 5.2 cm = 3.07” × 2.20” × 2.05”

Main crystal size: 1 × 1 cm = 0.39” × 0.39”
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NG46AJ7: Chalcopyrite with Dolomite and Calcite
Sharp disphenoidal Chalcopyrite crystals with a pseudotetrahedral shape. They are twinned and have a superficial metallic patina and are on a matrix with Dolomite and Calcite. This kind of Chalcopyrite was not known at the locality until now.
Salomón Cut, bench 290, Rio Tinto Mines, Minas de Riotinto, Comarca Cuenca Minera, Huelva, Andalusia  Spain
Specimen size: 7.2 × 4.1 × 4.9 cm = 2.83” × 1.61” × 1.93”
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NE66AJ7: Chalcopyrite with Dolomite and Calcite
Sharp disphenoidal Chalcopyrite crystals with a pseudotetrahedral shape. They are twinned, very bright and on a matrix with Dolomite and Calcite. The sample has been sawed on the lower part to reduce the matrix. This kind of Chalcopyrite was not known at the locality until now.
Salomón Cut, bench 290, Rio Tinto Mines, Minas de Riotinto, Comarca Cuenca Minera, Huelva, Andalusia  Spain
Specimen size: 6.1 × 3.7 × 4.6 cm = 2.40” × 1.46” × 1.81”

Main crystal size: 0.7 × 0.7 cm = 0.28” × 0.28”
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JFD180AP1: Chalcopyrite with Dolomite and Siderite
One hell of a piece (for this deposit anyway). Chalcopyrite is not exactly the most famous species from the Troya mine, but this specimen, found in the first years of exploitation, shows good sharp crystals, displaying a nice contrast with the Dolomite and the Siderite that are typical there. Of the best possible quality for this locality.
Troya Mine, Mutiloa, Comarca Goyerri, Guipúzcoa / Gipuzkoa, Basque Country (Euskadi)  Spain (±1983)
Specimen size: 12.3 × 8.9 × 3.4 cm = 4.84” × 3.50” × 1.34”
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TA78Z0: Chalcopyrite with Ferberite and Boulangerite (variety plumosite)
Spheroidal, almost a floater, aggregate of twinned Chalcopyrite crystals with parallel growths of Ferberite crystals and small mossy Boulangerite (variety plumosite) aggregates.
Yaogangxian Mine, Yizhang, Chenzhou Prefecture, Hunan Province  China (2006)
Specimen size: 4 × 4 × 3.9 cm = 1.57” × 1.57” × 1.54”

Main crystal size: 1.4 × 0.6 cm = 0.55” × 0.24”
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TMR16AP7: Chalcopyrite with Fluorite and Calcite
Twinned trapezohedral crystals of Chalcopyrite, very sharp and extraordinarily lustrous, on matrix, with small Fluorite and Calcite crystals. The specimen comes from the old collection of Robert-Auguste Touchon.
Carn Brea, Pool, Illogan, Camborne - Redruth - Saint Day District, Cornwall  England / United Kingdom
Specimen size: 2.9 × 2.4 × 2 cm = 1.14” × 0.94” × 0.79”
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TM14AJ1: Chalcopyrite with Galena and Quartz
A novelty at Tucson 2019. Group of bright Chalcopyrite crystals with very well defined parallel growths partially coated by small epigenetic Galena crystals and implanted on a group of white, doubly terminated Quartz crystals.
El Bolivar Mine, Piedras Verdes (Triguito), Municipio Urique, Chihuahua  Mexico (10/2018)
Specimen size: 8.6 × 4.5 × 3.2 cm = 3.39” × 1.77” × 1.26”

Main crystal size: 2.5 × 1.8 cm = 0.98” × 0.71”
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TBB91AP3: Chalcopyrite with Galena and Sphalerite
Disphenoidal Chalcopyrite crystals with slight curvatures on the edges, accompanied by Galena crystals with very deeply hoppered faces, and twinned Sphalerite crystals. Among the first finds in the Madan area, it comes from a French collection.
Madan mining area, Rhodope Mountains, Smolyan Oblast  Bulgaria
Specimen size: 14.3 × 9 × 4.4 cm = 5.63” × 3.54” × 1.73”
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NG12AM7: Chalcopyrite with Gypsum, Dolomite and Calcite
Very sharp disphenoidal crystals of Chalcopyrite with a pseudotetrahedral habit, twinned and with a superficial metallic tarnish. On matrix, with a large, very transparent and lustrous Gypsum crystal, and also Dolomite and Calcite crystals. This type of specimen was unknown until very recently at this locality.
Salomón Cut, bench 290, Rio Tinto Mines, Minas de Riotinto, Comarca Cuenca Minera, Huelva, Andalusia  Spain
Specimen size: 8.8 × 7.3 × 3.6 cm = 3.46” × 2.87” × 1.42”

Main crystal size: 2 × 0.7 cm = 0.79” × 0.28”
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NC13AM7: Chalcopyrite with Gypsum, Dolomite and Calcite
Very sharp disphenoidal crystals of Chalcopyrite with a pseudotetrahedral habit, twinned and with a superficial metallic tarnish. On matrix, with Gypsum and Dolomite and Calcite crystals. This type of specimen was unknown from the locality until this find.
Salomón Cut, bench 290, Rio Tinto Mines, Minas de Riotinto, Comarca Cuenca Minera, Huelva, Andalusia  Spain
Specimen size: 8.7 × 4.8 × 6 cm = 3.43” × 1.89” × 2.36”
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SV90NBX: Chalcopyrite with Gypsum, Dolomite and Calcite
Very sharp bisphenoidal crystals of Chalcopyrite with a pseudotetrahedral habit, twinned and with the good color and luster characteristic of the species. They appear with Dolomite crystals embedded in a Calcite matrix and rarely with associated Gypsum crystals, as in this case. This type of specimen was unknown until this find at the locality.
Salomón Cut, bench 290, Rio Tinto Mines, Minas de Riotinto, Comarca Cuenca Minera, Huelva, Andalusia  Spain
Specimen size: 10.3 × 6.4 × 3.9 cm = 4.06” × 2.52” × 1.54”
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NA14AM7: Chalcopyrite with Gypsum, Dolomite and Calcite
Very sharp disphenoidal crystals of Chalcopyrite with a pseudotetrahedral habit, twinned and with a superficial metallic tarnish. On matrix, with a large, very transparent and lustrous Gypsum crystal, and also Dolomite and Calcite crystals. This type of specimen was unknown until very recently at this locality.
Salomón Cut, bench 290, Rio Tinto Mines, Minas de Riotinto, Comarca Cuenca Minera, Huelva, Andalusia  Spain
Specimen size: 8.4 × 6.9 × 4.8 cm = 3.31” × 2.72” × 1.89”
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AF11AM3: Chalcopyrite with Magnetite
Group of disphenoidal crystals (pseudotetrahedral) of Chalcopyrite, with sharp crystal forms. On a Magnetite matrix with octahedral crystals of Magnetite.
French Creek Mines, St. Peters, Warwick Township, Chester County, Pennsylvania  USA
Specimen size: 4.4 × 3.2 × 2.3 cm = 1.73” × 1.26” × 0.91”

Main crystal size: 1.2 × 0.7 cm = 0.47” × 0.28”
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NH11I0: Chalcopyrite with Malachite and Dolomite
Group of crystals of Chalcopyrite of tetrahedral habit, one of them clearly dominant, pseudomorphed by crystalline Malachite, contrasting with the matrix of Dolomite rhombohedra.
Azcárate Quarry, Eugui, Esteríbar, Comarca Auñamendi, Chartered Community of Navarre (Navarre)  Spain (1990)
Specimen size: 4.7 × 3.1 × 2.5 cm = 1.85” × 1.22” × 0.98”
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TLX96AP9: Chalcopyrite with Malachite and Quartz
Twinned crystal of Chalcopyrite with the dominant forms of the trapezohedron, very sharp, lustrous and on a Quartz crystal with the typical La Gardette habit. Some crystals of Chalcopyrite from this locality, a minority, are yellow as they are not pseudomorphed by Malachite. The specimen comes from the Gérard Forquet collection (number 903).
La Gardette Mine, La Gardette mining area, Villard-Notre-Dame, Le Bourg d'Oisans, Grenoble, Isère, Auvergne-Rhône-Alpes  France
Specimen size: 4.4 × 2 × 1.8 cm = 1.73” × 0.79” × 0.71”

Main crystal size: 1.9 × 1.7 cm = 0.75” × 0.67”
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NC87H5: Chalcopyrite with Malachite on Dolomite
Not so well known as the more famous Dolomite, Eugui Malachite is sporadically found, completely coating sharp crystals of Chalcopyrite.
Azcárate Quarry, Eugui, Esteríbar, Comarca Auñamendi, Chartered Community of Navarre (Navarre)  Spain (1993)
Specimen size: 3.5 × 2.8 × 1.7 cm = 1.38” × 1.10” × 0.67”
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NC12K0: Chalcopyrite with Malachite on Dolomite
Chalcopyrite crystals of very well defined faces and edges, pseudomorphed by Malachite, on a rhombohedral crystal of Dolomite whose faces have overgrowths with slight curvatures. Unusual.
Azcárate Quarry, Eugui, Esteríbar, Comarca Auñamendi, Chartered Community of Navarre (Navarre)  Spain (2006)
Specimen size: 8.3 × 4.3 × 3.7 cm = 3.27” × 1.69” × 1.46”

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

EMT27ASN1: Chalcopyrite with Pyrite
A classic example of American mineralogy. Very bright skeletal and hoppered crystals of Chalcopyrite with a vivid and intense golden color, slightly iridescent with very marked triangular shapes, accompanied by small Pyrite crystals. A true 'oldie' from mines that operated from the first half of the 18th century until the mid-20th century, and from which specimens were recovered from their waste piles until 1989, when collection was prohibited.
French Creek Mines, St. Peters, Warwick Township, Chester County, Pennsylvania  USA
Specimen size: 6.6 × 6.4 × 4.2 cm = 2.60” × 2.52” × 1.65”
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BLH66AP4: Chalcopyrite with Pyrite (variety bravoite)
Groups of very shiny Chalcopyrite crystals with sharp crystal forms, interspersed with greyish Pyrite crystals (the bravoite variety, rich in nickel), on a Baryte matrix. The specimen is a German classic, of the best quality known from the locality, and it comes from an important European collection.
Maubacher Bleiberg, Untermaubach, Düren, Eifel, North Rhine-Westphalia/Nordrhein-Westfalen  Germany
Specimen size: 15.5 × 11.7 × 7.3 cm = 6.10” × 4.61” × 2.87”

Main crystal size: 2.2 × 2.1 cm = 0.87” × 0.83”
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NJ56AF2: Chalcopyrite with Pyrite and Siderite
Group of Chalcopyrite crystals on matrix. They are very bright, with fine striations on their faces and they are coated by Arsenopyrite micro-crystals and lenticular Siderite crystals.
The specimen has been photographed and published in the magazine ‘Paragénesis’, number 01/2017, page 86
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (2004)
Specimen size: 7.7 × 6.2 × 3.8 cm = 3.03” × 2.44” × 1.50”
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TM27AN2: Chalcopyrite with Quartz
Group of twinned Chalcopyrite crystals with a tetrahedral habit, very marked curvatures on their faces and edges, lustrous, on matrix with small groups of Quartz crystals. The specimen comes from a not very well known French mine, from the Alain Tuel collection (number 2-147), whose label we will send to the buyer.
Mont-Roc Mine, Mont-Roc, Castres, Tarn, Occitanie  France
Specimen size: 5.8 × 4.3 × 4.7 cm = 2.28” × 1.69” × 1.85”

Main crystal size: 2.2 × 1.6 cm = 0.87” × 0.63”
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TBC57AP5: Chalcopyrite with Quartz
Group of trapezohedral Chalcopyrite crystals, very sharp, lustrous and with intense metallic iridescence with dominant green and blue tones, with small coatings of Quartz. The specimen, a German classic, comes from the Robert-Auguste Touchon collection.
Friedrich-Wilhelm Mine, Biersdorf, Daaden, Daaden-Herdorf, Altenkirchen District, Rhineland-Palatinate/Rheinland-Pfalz  Germany
Specimen size: 6.1 × 4.4 × 3.2 cm = 2.40” × 1.73” × 1.26”
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BFM27AP1: Chalcopyrite with Quartz
Group of complex Chalcopyrite crystals, with very sharp crystal forms, with a bright luster and microcrystalline Quartz coating that has left geometric cavities that correspond to missing crystals. Of high quality, the specimen comes from an important European collection.
Friedrich-Wilhelm Mine, Biersdorf, Daaden, Daaden-Herdorf, Altenkirchen District, Rhineland-Palatinate/Rheinland-Pfalz  Germany
Specimen size: 7.8 × 4.3 × 3.4 cm = 3.07” × 1.69” × 1.34”

Main crystal size: 1.9 × 0.9 cm = 0.75” × 0.35”
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TR97AK4: Chalcopyrite with Quartz
Druze of unusually well formed Chalcopyrite crystals for the deposit, with very bright polycrystalline growths. They exhibit a lively iridescence, are on matrix and partially covered with small transparent crystals of Quartz.
Le Burc Mine, Alban-Le Fraysse area, Tarn, Occitanie  France
Specimen size: 8.8 × 6.5 × 4.5 cm = 3.46” × 2.56” × 1.77”

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The Pedro Goy
Collection		 The Desmond Sacco Collection
The Desmond Sacco
Collection		 Best Specimens
Best Specimens		 The Folch Collection
The Folch
Collection		 Home Page Minerals
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Minerals