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Antigorite : (Mg,Fe2+)3[(OH)4|Si2O5] | |
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Escambray Mts. (Sierra de Escambray), Villa Clara Province, Cuba Sample with 10x9x4cm - Self-collected in trip of vacations - May of 1998 |
| © Martins da Pedra | Photo ID: 53237 View Count: 432 |
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Havana, La Habana Province, Cuba 8.1 x 7.1 x 6.9 cm. This is still a poorly categorized mineral, originally described from near Havana, La Habana Province, Cuba. It is a magnesium iron silicate that is not yet formally approved as a species pending more work. This specimen is very rich with the material, dark black masses within the lightweight matrix. Note late 1800s AE Foote ... |
| © Rob Lavinsky | Photo ID: 202059 View Count: 79 |
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Havana, La Habana Province, Cuba Antillite is a poorly categorized mineral that is currently not valid with the IMA. Still, I find this to be a neat, historical specimen. A 9.5 x 5.6 x 4.8 cm matrix is rich throughout with small micaceous masses of antillite. There is an old label from A.E. Foote glued to the back of the specimen. |
| © Dan & Diana Weinrich Minerals | Photo ID: 264442 View Count: 17 |
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Guachinango deposit, Matanzas Province, Cuba Yes, this specimen is aesthetically challenged (it's essentially road tar!) but it's from Cuba (how many Cuban minerals do you have?), and it's from the recently dispersed Philadelphia Academy collection. Specimen size:8.9 x 7.9 x 5.0 cm (3.5 x 3.1 x 2.0 inches) |
| © Steve Hardinger | Photo ID: 257881 View Count: 14 |
Calcite : CaCO3 | |
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Guachinango deposit, Matanzas Province, Cuba 4.4 x 1.3 x 1.1 cm. Looking very much like a calcite from Dal'negorsk, this colorless, glassy and gemmy calcite crystal is instead from Cuba. A rare occurrence! I have seen very, very few. Small cleave on the back of the termination, but still displays well from the front and is important for the locale. Ex. Carnegie Museum Collection. |
| © Rob Lavinsky | Photo ID: 158452 View Count: 192 |
Chromite : FeCr2O4 | |
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Caledonia Mine, Holguín Province, Cuba Black nodular chromite in matrix. Size 8×6 cm. Collection of Geologický pavilon of VŠB-Technical University of Ostrava (http://geologie.vsb.cz/gp). |
| © Jakub Jirásek | Photo ID: 117377 View Count: 417 |
Copper : Cu | |
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El Cobre Mine, Santiago de Cuba, Sierra Maestra Mts, Oriente Province, Cuba A 5cm specimen of native Copper from Santiago, Cuba, most likely from the El Cobre Mine. Ex. Philadelphia Academy of Natural Sciences #181 (dating it most likely to mid-1800's). Label shows the donor as a Dr. Mease, who I believe to be Dr. James Mease (1771-1846), a member of the American Philosophical Society. If this is true this specimen ... |
| © C. Stefano '08 | Photo ID: 185928 View Count: 149 |
Copper : Cu, Cuprite : Cu2O | |
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El Cobre Mine, Santiago de Cuba, Sierra Maestra Mts, Oriente Province, Cuba 1.5cm specimen from this unusual locality |
| © Maurice de Graaf | Photo ID: 94925 View Count: 127 |
Manganite : Mn3+O(OH) | |
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Oriente Province, Cuba a 1mm spray of crystals. Photographed by Karl Volkman. In the Collection of Donald Volkman. |
| © Don Volkman 01/06 | Photo ID: 47050 View Count: 315 |
Orientite : Ca2MnMn2Si3O10(OH)4 | |
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Oriente Province, Cuba 7cm specimen of black Orientite xls from the Philidelphia Academy of Natural Sciences(#19799), the William Vaux Collection, and US National Museum (the Smithsonian). C. Stefano specimen # 2419. |
| © C. Stefano '08 | Photo ID: 172381 View Count: 187 |
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