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Calcite : CaCO3 | |
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Luanda, Luanda Province, Angola Black calcite crystallized - Overall size 4,5x3x3cm - April of 1974 |
| © Martins da Pedra | Photo ID: 66223 View Count: 685 |
Calcite (Var: Cobaltoan Calcite) : (Ca,Co)CO3 | |
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Mavoio Mine, Uíge Province, Angola Sample crystallized with 5,5x4,5x3cm - April of 1974 |
| © Martins da Pedra | Photo ID: 50234 View Count: 562 |
Calcite : CaCO3, Malachite : Cu2[(OH)2|CO3] | |
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Mavoio Mine, Uíge Province, Angola Sample crystallized with 6x3x2,5cm - April of 1974 |
| © Martins da Pedra | Photo ID: 60499 View Count: 505 |
Calcite : CaCO3, Copper : Cu | |
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Mavoio Mine, Uíge Province, Angola Calcite crystals up to 1,5cm on Copper matrix - Overall size 5,5x4x3cm - April of 1974 |
| © Martins da Pedra | Photo ID: 103100 View Count: 263 |
Calcite : CaCO3, Pyrite : FeS2 | |
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Arroyo Montoso, Chubut, Argentina Manganoan Calcite. Size: 4.0 x 4.0 x 2.6 cm. Half part of a boulder found in the bed of this rivoulet. |
| © JCLodovichi | Photo ID: 59723 View Count: 471 |
Calcite : CaCO3, Smithsonite (Var: Cuprian Smithsonite) : (Zn,Cu)CO3 | |
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Malpaso Quarry, Dumesnil, Córdoba, Argentina Calcite crystal covered by Smithsonite (Var: Cuprian Smithsonite). 3 x 2 cm. |
| © Marcelo O. Olsina | Photo ID: 32314 View Count: 741 |
Calcite : CaCO3 | |
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Malpaso Quarry, Dumesnil, Córdoba, Argentina Size: 11.7 x 3.5 x 2.7 cm. |
| © JCLodovichi | Photo ID: 58155 View Count: 588 |
Calcite : CaCO3 | |
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Valle Escondido, San Rafael Department, Mendoza, Argentina view area: 4 x 4 cm aproximatelly. |
| © Marcelo O. Olsina | Photo ID: 32497 View Count: 633 |
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Picun Leufu, Neuquén, Argentina Geode's size: 11.0 x 9.8 x 6.8 cm. The largest crystal 3.5 cm. |
| © JCLodovichi | Photo ID: 58545 View Count: 655 |
Calcite : CaCO3 | |
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Cayuqueo Quarry, El Tembrao, Valcheta, Río Negro, Argentina Size: 5.5 x 5 cm. |
| © Marcelo Olsina | Photo ID: 122637 View Count: 356 |
