Classification of Krieselite |
| IMA status: | Approved 2003 |
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| Strunz 8th edition ID: | 8/B.02-80
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| Nickel-Strunz 10th (pending) edition ID: | 9.AF.20
9 : SILICATES (Germanates) A : Nesosilicates F : Nesosilicates with additional anions; cations in [4], [5] and/or only [6] coordination |
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| mindat.org URL: | http://www.mindat.org/min-27545.html Please feel free to link to this page. |
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Type Occurrence of Krieselite |
| Type Locality: | Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia |
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Physical Properties of Krieselite |
| Lustre: | Greasy |
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| Diaphaneity (Transparency): | Translucent |
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| Colour: | Beige to white |
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Crystallography of Krieselite |
| Crystal System: | Orthorhombic |
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| Class (H-M): | mmm (2/m 2/m 2/m) - Dipyramidal |
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| Space Group: | Pnma {P21/n 21/m 21/a} |
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| Cell Parameters: | a = 9.1111Å, b = 8.5276Å, c = 4.8064Å
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| Ratio: | a:b:c = 1.068 : 1 : 0.564 |
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| Unit Cell Volume: | V 373.44 ų (Calculated from Unit Cell) |
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| X-Ray Powder Diffraction: | | d-spacing | | Intensity | | 3.811 | | (78) | | 3.315 | | (48) | | 3.016 | | (100) | | 2.464 | | (24) | | 2.417 | | (27) | | 2.247 | | (38) | | 1.398 | | (29) |
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| Comments: | From type description. |
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Optical Data of Krieselite |
| Type: | Biaxial |
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| RI values: | n = 1.757 |
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| Maximum Birefringence: | δ = 0.000
 Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration. |
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| Surface Relief: | High |
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Chemical Properties of Krieselite |
| Formula: | |
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| Essential elements: | Al, Ge, H, O |
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| All elements listed in formula: | Al, Ga, Ge, H, O |
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| Common Impurities: | C |
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Relationship of Krieselite to other Species |
Related Minerals - Nickel-Strunz Grouping):
- + | |
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Other Names for Krieselite |
| 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 Krieselite |
Reference List:
- + | Wunder, B. & Marler, B. (1997): Ge-analogues of aluminium silicates: High-pressure synthesis and properties of Ge-topaz, Al2GeO4(OH)2. European Journal of Mineralogy, 9, 1147-1158.
Marler, B. & Wunder, B. (1998): Crystal structure of dialuminium dihydroxogermanate, Al2GeO4(OH)2. Zeitschrift für Kristallographie - New Crystal Structures, 213, 3.
Schluter, J., Geisler, T., Pohl, D., Thomas, S. (2010): Krieselite, Al2GeO4(F,OH)2: A new mineral from the Tsumeb mine, Namibia, representing the Ge analogue of topaz. Neues Jahrbuch fur Mineralogie - Abhandlungen, 187, 33-40 |
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Internet Links for Krieselite |
| Search Engines: |
Look for Krieselite on Google
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| External Links: | Look for Krieselite on WebmineralLook for Krieselite on Athena MineralogyLook for Krieselite on WikipediaLook for Krieselite on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure Database |
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| Jobs: | Mining & Geology Jobs |
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Localities for Krieselite |
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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