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TC69AF6: Chalcopyrite with Calcite and Galena
Aggregate of twinned Chalcopyrite crystals with the dominant forms of a disphenoid. They are very well defined and bright and have cubic Pyrite crystals on the back; small Galena crystals are associated. The chalcopyrite crystals are partially coated by groups of lenticular Calcite crystals. A classic piece from Cavnic, where good Chalcopyrite specimens are very scarce.
Cavnic mining area, Cavnic, Maramures  Romania
Specimen size: 5.7 × 5.2 × 2.5 cm = 2.24” × 2.05” × 0.98”
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EM73X6: Chalcopyrite with Calcite and Quartz
Aggregate of disphenoidal Chalcopyrite crystals with pseudotetrahedral shape, with very well defined faces and edges and showing a very intense luster. They are on matrix with growths of white lenticular Calcite crystals. The sample has a great quality for the locality, where good Chalcopyrite crystals are uncommon.
Baia Sprie Mine, Baia Sprie, Maramures  Romania (1960-1970)
Specimen size: 14.5 × 9.2 × 4 cm = 5.71” × 3.62” × 1.57”

Main crystal size: 2.5 × 2 cm = 0.98” × 0.79”
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E16CF6: Chalcopyrite with Calcite and Quartz
The complex growth forms of the Chalcopyrite are on a matrix of compact Quartz crystals. During a later phase of crystallization, with a surprising esthetic effect, some curious lenticular crystals of Calcite grew on the matrix.
Boldut Mine, 61 level ↓350m., Cavnic, Maramures  Romania (04/1999)
Specimen size: 12.8 × 8 × 4 cm = 5.04” × 3.15” × 1.57”
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MJ12F2: Chalcopyrite with Calcite, Galena and Quartz
From a historic locality where mining activities have ceased, the twinned and brilliant crystals of Chalcopyrite are perfect examples of the species. Two generations of Quartz, which differ in color, partially cover both the Chalcopyrite and the matrix.
Rozália mine, Banská Hodrusa (Hodritsch)  Slovak Republic (1997)
Specimen size: 7 × 5 × 3 cm = 2.76” × 1.97” × 1.18”

Main crystal size: 1.2 × 1 cm = 0.47” × 0.39”
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SM220NBG: Chalcopyrite with Dolomite
Very aerial group of sharp, shiny Chalcopyrite crystals partially covered by white rhombohedral Dolomite crystals.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal
Specimen size: 3.8 × 3.7 × 2 cm = 1.50” × 1.46” × 0.79”
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RG76J1: Chalcopyrite with Dolomite
Very isolated crystals of very well defined faces and edges and extraordinarily bright, on a matrix of Dolomite. We specially note the locality because, actually, it is very difficult to obtain specimens of such quality from there.
Altenberg, Weißeritzkreis District, Saxony/Sachsen  Germany
Specimen size: 6.7 × 4.1 × 3.2 cm = 2.64” × 1.61” × 1.26”

Main crystal size: 0.6 × 0.5 cm = 0.24” × 0.20”
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NJ14AJ7: 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: 8.7 × 6.2 × 5.3 cm = 3.43” × 2.44” × 2.09”
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SV120RCX: Chalcopyrite with 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 matrix of Calcite. This type of specimen was unknown at the locality until this find.
Salomón Cut, bench 290, Rio Tinto Mines, Minas de Riotinto, Comarca Cuenca Minera, Huelva, Andalusia  Spain
Specimen size: 8.9 × 5 × 4.7 cm = 3.50” × 1.97” × 1.85”

Main crystal size: 0.5 × 0.4 cm = 0.20” × 0.16”
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NB26AJ7: Chalcopyrite with Dolomite and Calcite
Very sharp disphenoidal Chalcopyrite crystals with a pseudotetrahedral shape, twinned and with an iridescent superficial patina. They are on matrix with Dolomite, Calcite and Quartz. The sample has been sawed on the base 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: 5.5 × 4 × 2.8 cm = 2.17” × 1.57” × 1.10”
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NK36AJ7: 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 × 6 × 3.2 cm = 2.83” × 2.36” × 1.26”

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