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Calcioandyrobertsite-2O Mineral Data
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General Calcioandyrobertsite-2O Information
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 Chemical Formula: |
KCaCu5(AsO4)4[As(OH)2O2]•2(H2O) |
| Composition: |
Molecular Weight = 1,129.55 gm |
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Potassium 3.46 % K 4.17 % K2O |
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Calcium 3.55 % Ca 4.96 % CaO |
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Copper 28.13 % Cu 31.67 % Cu2O |
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Arsenic 33.16 % As 50.87 % As2O5 |
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Hydrogen 0.54 % H 4.78 % H2O |
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Oxygen 31.16 % O |
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______ ______ |
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100.00 % 96.46 % = TOTAL OXIDE |
| Empirical Formula: |
KCaCu5(AsO4)4(OH)2AsO2•2(H2O) |
| Environment: |
Occurs in a specimen of quartz gangue. Polymorph of calcioandyrobertsite; structure. |
| IMA Status: |
Approved IMA 2004 (Dana # Added) |
| Locality: |
Tsumeb mine, Namibia Link to MinDat.org Location Data. |
| Name Origin: |
Named as the -2O polytype of calcio-andyrobertsite-1M |
| Name Pronunciation: |
Calcioandyrobertsite-2O + Pronunciation 
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| Synonym: |
Calcio-andyrobertsite-2O - Renamed Calcioandyrobertsite-2O by Mineralogical Record, v39 (2008), p131 |
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IMA2000-011 |
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