Classification of Kastningite |
| IMA status: | Approved 1997 |
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| Strunz 8th edition ID: | 7/D.09-25
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| Nickel-Strunz 10th (pending) edition ID: | 8.DC.30
8 : PHOSPHATES, ARSENATES, VANADATES D : Phosphates, etc. with additional anions, with H2O C : With only medium-sized cations, (OH, etc.):RO4 = 1:1 and < 2:1 |
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Type Occurrence of Kastningite |
| Type Locality: | Silbergrube, Waidhaus, Vohenstrauß, Oberpfälzer Wald, Upper Palatinate, Bavaria, Germany |
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Occurrences of Kastningite |
| Geological Setting: | Granite pegmatite. |
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Physical Properties of Kastningite |
| Lustre: | Vitreous |
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| Diaphaneity (Transparency): | Transparent, Translucent |
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| Comment: | May be etched with reduced luster. |
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| Colour: | Generally colorless, may be white |
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| Hardness (Mohs): | 1 - 2 |
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| Tenacity: | Brittle |
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Crystallography of Kastningite |
| Crystal System: | Triclinic |
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| Cell Parameters: | a = 7.010Å, b = 10.205Å, c = 10.504Å α = 71.82°, β = 89.62°, γ = 69.90° |
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| Ratio: | a:b:c = 0.687 : 1 : 1.029 |
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| Unit Cell Volume: | V 666.16 ų (Calculated from Unit Cell) |
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| Z: | 2 |
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| Morphology: | Usually thin bladed with acutely sloping terminations. |
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| X-Ray Powder Diffraction: | | d-spacing | | Intensity | | 9.917 | | (100) | | 6.541 | | (36) | | 4.957 | | (50) | | 3.095 | | (28) |
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Optical Data of Kastningite |
| Type: | Biaxial (-) |
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| RI values: | nα = 1.567 nβ = 1.574 nγ = 1.582 |
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| 2V: | Measured: 94.7° , Calculated: 90.6° |
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| Maximum Birefringence: | δ = 0.015
 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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| Dispersion: | r > v strong |
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Chemical Properties of Kastningite |
| Formula: | | (Mn | | ,Fe | | ,Mg)Al | | [OH|PO | | ] | | · 8H | | O |
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| Essential elements: | Al, H, Mn, O, P |
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| All elements listed in formula: | Al, Fe, H, Mg, Mn, O, P |
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Relationship of Kastningite to other Species |
| Common Associates: | |
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Related Minerals - Nickel-Strunz Grouping):
- + | |
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Other Names for Kastningite |
| 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 Kastningite |
| Reference List: | Neues Jahrbuch für Mineralogie, Monatshefte (1999): 40-48.
Schlüter, J. and Kastning, J. (1999): Das neue Phosphatmineral Kastningit und weitere Neufunde aus Waidhaus, Oberpfalz. Lapis: 24(6): 39-42, 62. (in German).
Zeitschrift für Kristallographie: 214: 465-468.
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Internet Links for Kastningite |
| Search Engines: |
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| External Links: | Look for Kastningite on WebmineralLook for Kastningite on Athena MineralogyLook for Kastningite on WikipediaLook for Kastningite on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure DatabaseSearch for Kastningite in the Natural History Museum (London) online catalogue |
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Localities for Kastningite |
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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