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Orlandiite Mineral Data
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General Orlandiite Information
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 Chemical Formula: |
Pb3(Cl,OH)4(SeO3)•(H2O) |
| Composition: |
Molecular Weight = 899.16 gm |
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Hydrogen 0.28 % H 2.50 % H2O |
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Lead 69.13 % Pb 74.47 % PbO |
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Selenium 8.78 % Se 12.34 % SeO2 |
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Chlorine 13.80 % Cl 13.80 % Cl |
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- %
Cl -3.11 % -O=Cl2 |
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Oxygen 8.01 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Pb3Cl3.5(OH)0.5(SeO3)•(H2O) |
| Environment: |
Secondary mineral in the oxidation zone of an old lead and arsenic mine. |
| IMA Status: |
Approved IMA 1998 (Dana # Added) |
| Locality: |
Baccu Locci mine, Sardinia, Italy. Link to MinDat.org Location Data. |
| Name Origin: |
Named for mineralogist Paolo Orlandi (1946-) of the University of Pisa, Italy. |
| Synonym: |
IMA1998-038 |
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