Classification of Machatschkiite |
| IMA status: | Approved |
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| Strunz 8th edition ID: | 7/C.27-10
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| Nickel-Strunz 10th (pending) edition ID: | 8.CJ.35
8 : PHOSPHATES, ARSENATES, VANADATES C : Phosphates without additional anions, with H2O J : With only large cations |
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| Dana 8th edition ID: | 39.3.8.1
39 : HYDRATED ACID PHOSPHATES,ARSENATES AND VANADATES 3 : Miscellaneous |
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| Hey's CIM Ref.: | 22.3.3
22 : Phosphates, Arsenates or Vanadates with other Anions 3 : Phosphates, arsenates or vanadates with sulphates |
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| mindat.org URL: | http://www.mindat.org/min-2510.html Please feel free to link to this page. |
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Type Occurrence of Machatschkiite |
| Type Locality: | Anton Mine (St. Anton Mine), Heubach Valley, Wittichen, Schenkenzell, Black Forest, Baden-Württemberg, Germany |
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| Year of Discovery: | 1977 |
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Physical Properties of Machatschkiite |
| Hardness (Mohs): | 2 - 3 |
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Crystallography of Machatschkiite |
| Crystal System: | Trigonal |
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| Cell Parameters: | a = 15.1Å, c = 22.59Å
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| Ratio: | a:c = 1 : 1.496 |
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| Unit Cell Volume: | V 4,460.68 ų (Calculated from Unit Cell) |
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Optical Data of Machatschkiite |
| Type: | Uniaxial (-) |
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| RI values: | nω = 1.593 nε = 1.585 |
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| Maximum Birefringence: | δ = 0.008
 Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration. |
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| Surface Relief: | Moderate |
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Chemical Properties of Machatschkiite |
| Formula: | | (Ca,Na) | | AsO | | (AsO | | OH) | | (PO | | ,SO | | )·15H | | O |
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| Essential elements: | As, Ca, H, O, P |
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| All elements listed in formula: | As, Ca, H, Na, O, P, S |
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Relationship of Machatschkiite to other Species |
| Related Minerals - Nickel-Strunz Grouping): | |
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| Related Minerals - Hey's Index Grouping: | |
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Other Names for Machatschkiite |
| Synonyms: | |
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| German names: | |
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| Russian names: | |
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| Spanish names: | |
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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 Machatschkiite |
| Reference List: | American Mineralogist (1977): 62: 1260.
American Mineralogist (1983): 68: 851-852.
Tschermaks Mineralogische und Petrographische Mitteilungen (1982): 30: 145-155.
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Internet Links for Machatschkiite |
| Search Engines: |
Look for Machatschkiite on Google
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| External Links: | Look for Machatschkiite on WebmineralLook for Machatschkiite on Athena MineralogyLook for Machatschkiite on WikipediaLook for Machatschkiite on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure DatabaseSearch for Machatschkiite in the Natural History Museum (London) online catalogueMachatschkiite details from Handbook of Mineralogy (PDF) |
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| Mineral Dealers: | rare and unusual minerals mainly crystallizedFabre Minerals - search for Machatschkiite specimensMineral Classics - Worldwide Collector Quality Minerals and GemsThe Arkenstone - Fine MineralsBuy fine minerals and gemstones from Pala InternationalSearch for Machatschkiite at Thames Valley MineralsWilensky Fine MineralsRare and Unusual minerals at Mineralogical Research CompanyBuy Fine Minerals from mineralsweb.comBuy Minerals and Crystals from Crystalarium.comHigh-end worldwide specimens & outstanding customer serviceLapis Mineral Magazin |
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Localities for Machatschkiite |