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Calcite : CaCO3 | |
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Gloria Mine, Kalahari manganese fields, Northern Cape Province, South Africa A showy and excellent calcite specimen from an uncommon South African locality, the Gloria Mine. Lustrous, translucent and frosted gray calcite rhombs cover the massive calcite matrix. The overall presentation and shape looks like a brain coral. Ex Willy Israel Collection, who purchased this piece from Pieter De Bruyn in Hotazel in 1986. SUPER ... |
| © Rob Lavinsky | Photo ID: 47633 View Count: 164 |
Calcite : CaCO3 | |
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Gloria Mine, Kalahari manganese fields, Northern Cape Province, South Africa This 4.5cm X 2.4cm X 2.8cm specimen is comprised of scalenohedrons with internal milky phantoms as well as red phantoms from iron oxides. There is minor manganese ore around the perimeter. |
| © Geoffrey Krasnov | Photo ID: 218207 View Count: 35 |
Hematite : Fe2O3, Calcite : CaCO3, Pyrite : FeS2 | |
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Gloria Mine, Kalahari manganese fields, Northern Cape Province, South Africa A showy mounded specimen of lustrous, preferentially hematite-tinted, doubly terminated calcite crystals to 1.7 cm with pryite cyrstals on massive pyrite matrix from the Gloria Mine of South Africa. Scattered damage to a few crystal tips and one small area are certainly not detracting from this two-sided piece. 5.7 x 4.7 x 4.5 cm |
| © Rob Lavinsky | Photo ID: 54573 View Count: 194 |
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Gloria Mine, Kalahari manganese fields, Northern Cape Province, South Africa 9.7 x 6 x 6 cm. A very interesting combination piece of attractive (great metallic luster!) Pyrites that range from very fine to cubes up to 1 cm. These are intergrown with white, and fluorescent, Calcite crystals. Many of these are doubly-terminated, and they range up to 1.8 cm in length. This is a quality, and distinctive, specimen from an ... |
| © Rob Lavinsky | Photo ID: 168105 View Count: 66 |
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