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10.10.2011 12:05 |
Synonyms: amphibole jade.
Class: Silicates.
Formula: Ca2 (Mg, Fe) 5 (OH, F) 2 (Si4O11) 2, calcium silicate, magnesium and iron.
Hardness: 6-6.5.
Specific gravity: ... |
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10.10.2011 11:52 |
Class: Carbonates.
Formula: CuCO3 ♦ Cu (OH) 2, gidroksokarbonat copper.
Hardness: 4.
Unit Weight: 4.
Color: light, emerald, black and green.
Feature: ... |
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10.10.2011 11:42 |
Synonyms: emerald.
Class: Silicates.
Formula: Al2Be3Si6O18, berillosilikat aluminum.
Hardness: 7.5-8.
Specific gravity: 2,67-2,78.
Colour: green with ... |
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10.10.2011 11:30 |
Synonyms: gem, tears, sea nymphs.
Class: organic matter.
Hardness: 3-4.
Specific gravity: 2,6-2,78.
Color: white, yellow, silver, cream, gold, green,blue, ... |
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06.10.2011 15:17 |
Aliases: Agatha, agate, stone, Arabic, Aztec stone, etc.
Class: Phosphates.
Formula: CuAl6 (PO4) 4 (OH) 8 ♦ 4H2O, copper-containing aqueous phosphate aluminum.
Hardness: ... |
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06.10.2011 14:51 |
Synonyms: purple agate, stone, Bacchus, the stone Episcopal, lavendin,apostolic rock.
Class: Oxides and hydroxides.
Formula: SiO2, silicon dioxide.
Hardness: ... |
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06.10.2011 14:29 |
Class: native elements.
Formula: C, crystalline carbon.
Hardness: 10.
Specific gravity: 3,47-4,55.
Color: colorless to black.
Trait is absent.
Similar minerals ... |
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