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Delvauxite Mineral Data
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General Delvauxite Information
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 Chemical Formula: |
CaFe+++4(PO4,SO4)2(OH)8•4-6(H2O) (?) |
| Composition: |
Molecular Weight = 863.66 gm |
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Calcium 3.48 % Ca 4.87 % CaO |
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Magnesium 0.70 % Mg 1.17 % MgO |
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Aluminum 0.62 % Al 1.18 % Al2O3 |
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Iron 25.22 % Fe 36.06 % Fe2O3 |
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Phosphorus 10.04 % P 23.01 % P2O5 |
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Hydrogen 2.03 % H 18.15 % H2O |
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Carbon 0.28 % C 1.02 % CO2 |
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Sulfur 4.08 % S 10.20 % SO3 |
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Oxygen 53.54 % O |
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______ ______ |
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100.00 % 95.65 % = TOTAL OXIDE |
| Empirical Formula: |
Ca0.75Mg0.25Fe3+3.9Al0.2(PO4)2.8(SO4)1.1(CO3)0.2(OH)8�4.7(H2O) |
| Environment: |
In a gossan. |
| IMA Status: |
Valid Species (Pre-IMA) 1838 |
| Locality: |
Berneau, near Vise, Li�ge, Belgium. Link to MinDat.org Location Data. |
| Name Origin: |
Named after J.S.P.J. Delvaux de Feuffe (1782-1863), Belgian chemist who first described and analyzed the mineral. |
| Name Pronunciation: |
Delvauxite + Pronunciation  |
| Synonym: |
Borickite - 42.6.6.2 |
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