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Welshite Mineral Data
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General Welshite Information
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 Chemical Formula: |
Ca4Mg9Sb3O4[Si6Be3AlFe2O36] |
| Composition: |
Molecular Weight = 1,746.53 gm |
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Calcium 8.74 % Ca 12.23 % CaO |
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Magnesium 10.91 % Mg 18.09 % MgO |
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Manganese 3.68 % Mn 4.75 % MnO |
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Beryllium 1.67 % Be 4.64 % BeO |
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Aluminum 2.38 % Al 4.50 % Al2O3 |
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Zinc 0.15 % Zn 0.19 % ZnO |
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Iron 4.16 % Fe 0.21 % FeO / 5.71 % Fe2O3 |
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Silicon 8.96 % Si 19.16 % SiO2 |
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Antimony 21.12 % Sb 28.06 % Sb2O5 |
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Arsenic 1.59 % As 2.43 % As2O5 |
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Oxygen 36.64 % O |
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______ ______ |
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100.00 % 99.98 % = TOTAL OXIDE |
| Empirical Formula: |
Be3.24 |
| IMA Status: |
Approved IMA 1978 |
| Locality: |
Langban, Varmland, Sweden. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Wilfred R. Welsh (1915-?), amateur mineralogist and teacher of natural sciences. |
| Name Pronunciation: |
Welshite  |
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