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Joesmithite Mineral Data
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General Joesmithite Information
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 Chemical Formula: |
PbCa2(Mg,Fe++,Fe+++)5Si6Be2O22(OH)2 |
| Composition: |
Molecular Weight = 1,043.42 gm |
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Calcium 7.30 % Ca 10.21 % CaO |
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Magnesium 5.82 % Mg 9.66 % MgO |
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Manganese 1.58 % Mn 2.04 % MnO |
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Beryllium 1.55 % Be 4.31 % BeO |
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Iron 10.70 % Fe 2.75 % FeO / 12.24 % Fe2O3 |
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Silicon 16.15 % Si 34.55 % SiO2 |
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Hydrogen 0.17 % H 1.55 % H2O |
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Lead 19.86 % Pb 20.62 % Pb2O |
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Oxygen 36.49 % O |
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Fluorine 0.36 % F 0.36 % F |
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- %
F -0.15 % -O=F2 |
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______ ______ |
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100.00 % 98.16 % = TOTAL OXIDE |
| Empirical Formula: |
PbCa1.9Mg2.5Fe3+1.6Fe2+0.4Mn2+0.3Si6Be1.8O22(OH)1.8F0.2 |
| Environment: |
Metamorphosed manganese ores. |
| IMA Status: |
Approved IMA 1968 |
| Locality: |
At Lanban, Varmalnd, Sweden. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Prof. Joseph Victor Smith (1928-), English-American mineralogist and petrologist of the University of Chicago, Chicago, Illinois, USA. |
| Name Pronunciation: |
Joesmithite + Pronunciation  |
| Synonym: |
ICSD 74285 |
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PDF 22-531 |
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