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Griphite Mineral Data
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General Griphite Information
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 Chemical Formula: |
Ca(Mn,Na,Li)6Fe++Al2(PO4)6(F,OH)2 |
| Composition: |
Molecular Weight = 1,007.43 gm |
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Sodium 2.51 % Na 3.38 % Na2O |
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Lithium 0.48 % Li 1.04 % Li2O |
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Calcium 3.98 % Ca 5.57 % CaO |
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Manganese 16.91 % Mn 21.83 % MnO |
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Aluminum 5.09 % Al 9.61 % Al2O3 |
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Iron 10.53 % Fe 7.84 % FeO / 6.34 % Fe2O3 |
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Phosphorus 18.45 % P 42.27 % P2O5 |
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Hydrogen 0.01 % H 0.09 % H2O |
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Oxygen 38.27 % O |
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Fluorine 3.77 % F 3.77 % F |
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- %
F -1.59 % -O=F2 |
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______ ______ |
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100.00 % 100.16 % = TOTAL OXIDE |
| Empirical Formula: |
CaMn2+3.1Na1.1Fe2+1.1Li0.7Fe3+0.8Al1.9(PO4)6F2(OH)0.1 |
| Environment: |
Accessory mineral in complex granite pegmatites. |
| IMA Status: |
Valid Species (Pre-IMA) 1891 |
| Locality: |
Riverton Lode (Everly mine), near Harney City, 3 km east of Keystone, Penninton County, South Dakota, USA. Link to MinDat.org Location Data. |
| Name Origin: |
From the Greek for "enigma", as the chemical composition was originally puzzling. |
| Name Pronunciation: |
Griphite  |
| Synonym: |
ICSD 34119 |
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PDF 42-1351 |
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