Classification of Fencooperite |
| IMA status: | Approved 2000 |
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| Strunz 8th edition ID: | 8/C.37-10
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| Nickel-Strunz 10th (pending) edition ID: | 9.BH.20
9 : SILICATES (Germanates)
B : Sorosilicates
H : Sorosilicates with Si3O10, Si4O11, etc. anions; cations in tetrahedral [4] and greater coordination |
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| mindat.org URL: | http://www.mindat.org/min-10343.html
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Type Occurrence of Fencooperite |
| Type Locality: | Trumbull Peak, Incline, Mariposa Co., California, USA |
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Physical Properties of Fencooperite |
| Lustre: | Adamantine, Vitreous |
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| Colour: | Black |
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| Streak: | Greyish black |
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| Hardness (Mohs): | 4½ - 5 |
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Crystallography of Fencooperite |
| Crystal System: | Trigonal |
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| Class (H-M): | 3m - Ditrigonal Pyramidal |
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| Space Group: | P3m1 |
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| Cell Parameters: | a = 10.727Å, c = 7.085Å
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| Ratio: | a:c = 1 : 0.66 |
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| Unit Cell Volume: | V 706.1 ų |
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Optical Data of Fencooperite |
| Type: | Isotropic (-) |
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| RI values: | nω = 1.723 nε = 1.711 |
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| Maximum Birefringence: | δ = 0.012 - Isotropic minerals have no birefringence |
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| Surface Relief: | High |
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Chemical Properties of Fencooperite |
| Formula: | |
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| Essential elements: | Ba, C, Cl, Fe, H, O, Si |
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| All elements listed in formula: | Ba, C, Cl, Fe, H, O, Si |
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Relationship of Fencooperite to other Species |
Related Minerals - Nickel-Strunz Grouping):
- + | |
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Other Names for Fencooperite |
| Synonyms: | |
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| Other Languages: | |
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Other Information |
| Health Warning: | No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care. |
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References for Fencooperite |
| Reference List: | Canadian Mineralogist: 39, 1059-1064,
Grice, J.D. (2001) The crystal structure of fencooperite: Unique [Fe3O13] pinwheels cross-connected by [Si8O22] islands. Canadian Mineralogist: 39: 1065-1071.
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Internet Links for Fencooperite |
| Search Engines: |
Look for Fencooperite on Google
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| External Links: | Look for Fencooperite on WebmineralLook for Fencooperite on Athena MineralogyLook for Fencooperite on WikipediaLook for Fencooperite on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure DatabaseSearch for Fencooperite in the Natural History Museum (London) online catalogue |
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Localities for Fencooperite |
The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the  symbol to view information about a locality.
The symbol next to localities in the list
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