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Johnbaumite Mineral Data
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General Johnbaumite Information
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 Chemical Formula: |
Ca5(AsO4)3(OH) |
| Composition: |
Molecular Weight = 634.15 gm |
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Calcium 31.60 % Ca 44.21 % CaO |
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Arsenic 35.44 % As 54.37 % As2O5 |
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Hydrogen 0.16 % H 1.42 % H2O |
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Oxygen 32.80 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Ca5(AsO4)3(OH) |
| Environment: |
As analog of hydroxylapatite and (OH) analog of svabite. |
| IMA Status: |
Approved IMA 1980 |
| Locality: |
Palmer Shaft, Franklin mine, Franklin, Sussex County, New Jersey, USA. Link to MinDat.org Location Data. |
| Name Origin: |
Named for John L. Baum (1916-), resident geologist of the New Jersey Zinc Co. and curator of the Franklin Mineral Museum, Franklin, New Jersey, USA. |
| Name Pronunciation: |
Johnbaumite + Pronunciation  |
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