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Arakiite Mineral Data
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General Arakiite Information
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 Chemical Formula: |
(Zn,Mn++)(Mn++,Mg)12(Fe+++,Al)2(AsO3)(AsO4)2(OH)23 |
| Composition: |
Molecular Weight = 1,452.97 gm |
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Magnesium 7.86 % Mg 13.04 % MgO |
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Manganese 27.60 % Mn 35.64 % MnO |
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Aluminum 1.30 % Al 2.46 % Al2O3 |
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Zinc 3.74 % Zn 4.65 % ZnO |
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Iron 5.00 % Fe 7.14 % Fe2O3 |
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Arsenic 15.47 % As 6.81 % As2O3 / 15.82 % As2O5 |
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Hydrogen 1.60 % H 14.26 % H2O |
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Oxygen 37.44 % O |
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______ ______ |
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100.00 % 99.81 % = TOTAL OXIDE |
| Empirical Formula: |
Zn0.83Mn2+7.3Mg4.7Fe3+1.3Al0.7(AsO3)(AsO4)2(OH)23 |
| Environment: |
Megascopically indistinguishable from hematolite or dixenite. |
| IMA Status: |
Approved IMA 1999 (Dana # Added) |
| Locality: |
Found on a museum specimen, previously identified as dixenite from Langban, Varmland, Sweden. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Dr. Takaharu Araki (1929-), University of Chicago, for his numerous crystal-structure contributions to the science of mineralogy. |
| Synonym: |
ICSD 87742 |
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IMA1998-062 |
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PDF 89-821 |
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