| Formula: | | (Co,Zn,Ni) | | (SO | | )(OH,Cl) | | ·8H | | O |
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| System: | Hexagonal | Lustre: | Pearly |
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| Hardness: | 1½ - 2 |
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| Name: | Named for Thérèse Magnan for her contributions to knowledge about the Cap Garone mine, Var (France). |
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Thérèsemagnanite may be closely related to
gordaite (Kolitsch, unpubl. data, 1999):
- the indexed X-ray powder patterns of both minerals are very similar
- both gordaite and thérèsemagnanite are uniaxial negative and their refractive indices and birefringence are quite similar
- thérèsemagnanite may contain Na (possibly overlooked because of Na/Zn peak overlap)
Classification of Thérèsemagnanite |
| IMA status: | Approved 1991 |
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| Nickel-Strunz 10th (pending) edition ID: | 7.DD.80
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates) D : Sulfates (selenates, etc.) with additional anions, with H2O D : With only medium-sized cations; sheets of edge-sharing octahedra |
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| Dana 8th edition ID: | 31.2.5.1
31 : HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN 2 : (AB)6(XO4)Zq·xH2O |
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| mindat.org URL: | http://www.mindat.org/min-7335.html Please feel free to link to this page. |
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Type Occurrence of Thérèsemagnanite |
| Type Locality: | Cap Garonne Mine, Pradet, Var, Provence-Alpes-Côte d'Azur, France |
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Physical Properties of Thérèsemagnanite |
| Lustre: | Pearly |
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| Hardness (Mohs): | 1½ - 2 |
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Crystallography of Thérèsemagnanite |
| Crystal System: | Hexagonal |
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| Cell Parameters: | a = 8.363(8) Å, c = 26.18(7) Å
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| Ratio: | a:c = 1 : 3.13 |
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| Unit Cell Volume: | V 1,585.71 ų (Calculated from Unit Cell) |
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| Z: | 3 |
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| Comment: | Space group unknown. |
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| X-Ray Powder Diffraction: | | d-spacing | | Intensity | | 13.1 | | (100) | | 6.552 | | (25) | | 4.177 | | (25) | | 3.523 | | (30) | | 2.736 | | (25) | | 2.681 | | (40) |
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Optical Data of Thérèsemagnanite |
| Type: | Uniaxial (-) |
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| RI values: | nω = 1.568 nε = 1.542 |
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| Maximum Birefringence: | δ = 0.026
 Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration. |
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| Surface Relief: | Low |
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Chemical Properties of Thérèsemagnanite |
| Formula: | | (Co,Zn,Ni) | | (SO | | )(OH,Cl) | | ·8H | | O |
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| Essential elements: | Co, H, O, S |
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| All elements listed in formula: | Cl, Co, H, Ni, O, S, Zn |
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Relationship of Thérèsemagnanite to other Species |
Related Minerals - Nickel-Strunz Grouping):
- + | |
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Other Names for Thérèsemagnanite |
| 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 Thérèsemagnanite |
| Reference List: | Sarp, H. (1993): Guarinoite (ZnCoNi)6(SO4)(OH,Cl)10*5H2O et theresemagnanite (CoZnNi)6(SO4)(OH,Cl)10*8H2O, deux nouveaux minéraux de la mine de Cap Garonne, Var, France. Archs. Sci. Genève 46(1), 37-44. (in French).
American Mineralogist: 78: 1314-1315.
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Internet Links for Thérèsemagnanite |
| Search Engines: |
Look for Thérèsemagnanite on Google
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| External Links: | Look for Thérèsemagnanite on WebmineralLook for Thérèsemagnanite on Athena MineralogyLook for Thérèsemagnanite on WikipediaLook for Thérèsemagnanite on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure DatabaseSearch for Thérèsemagnanite in the Natural History Museum (London) online catalogueThérèsemagnanite details from Handbook of Mineralogy (PDF) |
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Localities for Thérèsemagnanite |
The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the  symbol to view information about a locality.
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