NAME | CHALCOPYRITE Copper Iron Sulfide |
Formula | CuFeS2 |
Crystal System | Tetragonal |
Location | Coahuila, Mexico |
Data | Ex. P. R. Cosminsky collection; 1985 |
Photographer | Robert Klopfer / Alexander Kopylov |

NAME | CHALCOPYRITE Copper Iron Sulfide |
Formula | CuFeS2 |
Crystal System | Tetragonal |
Location | Coahuila, Mexico |
Data | Ex. P. R. Cosminsky collection; 1985 |
Photographer | Robert Klopfer / Alexander Kopylov |
tchorbps | | Micromounts |
NAME | DIOPTASE Hydrous Copper Silicate |
Formula | Cu6Si6O18 • 6H2O |
Crystal System | Hexagonal Rhombohedral |
Location | Table Mountain Mine, Pinal Co., Arizona, USA |
Data | Ex. J. Ulinski collection; 2007 |
Photographer | Robert Klopfer / Alexander Kopylov |
holdgrgs | | Micromounts |
NAME | DOLOMITE Calcium Magnesium Carbonate |
Formula | CaMg(CO3)2 |
Crystal System: Hexagonal Rhombahedral | |
Location | Warsaw, Hancock Co., Illinois, USA |
Data | Ex. P.R. Cosminsky collection; 1985 |
Photographer | Robert Klopfer / Alexander Kopyhlov |
tchorbps | | Micromounts |
NAME | HEMIMORPHITE Hydrous Zinc Silicate |
Formula | Zn2Si2O7(OH)2•H2O |
Crystal System | Orthorhombic |
Location | Mina Ojuella, Mapimi, Durango, Mexico |
Data | Ex. P. R. Cosminsky collection; 1985 |
Photographer | Robert Klopfer / Alexander Kopylov |
tchorbps | | Micromounts |
NAME | MARCASITE Iron Sulfide |
Formula | FeS2 |
Crystal System | Orthorhombic |
Location | Francon Quarry, Montreal, Canada |
Data | Ex. J. Ulinski collection; 2007 |
Photographer | Robert Klopfer/Alex Kopylov |
tchorbps | | Micromounts |
NAME | MILLERITE Nickel Sulfide |
Formula | NiS |
Crystal System | Hexagonal Rhombohedral |
Location | Halls Gap Kentucky |
Data | Ex. J. Ulinski collection; 2007 |
Photographer | Robert Klopfer / Alexander Kopylov |
holdgrgs | | Micromounts |
NAME | MIMETITE Lead Chloro-Arsenate |
Formula | Pb5(AsO4)3Cl |
Crystal System | Hexagonal |
Location | San Pedro, Corralitos, Chihuahua, Mexico |
Data | Ex. P. R. Cosminsky Collection, 1985 |
Photographer | Robert Klopfer / Alexander Kopylov |
tchorbps | | Micromounts |
NAME | MIMETITE Lead Chloro-Arsenate |
Formula | Pb5(AsO4)3Cl |
Crystal System | Hexagonal |
Location | Tsumeb, Namibia |
Data | Ex. F. A. Keidel collection; 2004 |
Photographer | Robert Klopfer / Alexander Kopylov |
tchorbps | | Micromounts |
NAME | PYRITE Iron Sulfide |
Formula | FeS2 |
Crystal System | Isometric |
Location | Sylacauga Talladega Co, Alabama |
Data | Ex. P. R. Cosminsky Collection, 2012 |
Photographer | Robert Klopfer/Alexander Kopylov |
tchorbps | | Micromounts |
NAME | PYRITE Iron Sulfide |
Formula | FeS2 |
Crystal System | Isometric |
Location | Niaca, Chihuahua, Mexico |
Data | Ex. F. A. Keidel Collection, 2004 |
Photographer | Robert Klopfer / Alexander Kopylov |
tchorbps | | Micromounts |