Classification of Biachellaite |
| IMA status: | Approved 2007 |
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| Nickel-Strunz 10th (pending) edition ID: | 8.FB.05
8 : PHOSPHATES, ARSENATES, VANADATES
F : Polyphosphates, Polyarsenates, [4]-Polyvanadates
B : Polyphosphates, etc., with OH only |
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| Dana 8th edition ID: | 76.2.9.19
76 : TECTOSILICATES Al-Si Framework
2 : Al-Si Framework Feldspathoids and related species |
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| mindat.org URL: | http://www.mindat.org/min-32621.html
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Type Occurrence of Biachellaite |
| Type Locality: | Biachella Valley, Sacrofano Caldera, Sacrofano, Campagnano di Roma, Rome Province, Latium, Italy |
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| General Appearance of Type Material: | equant dipyramidal crystals up to 1 cm in cavities |
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| Place of Conservation of Type Material: | Fersman Mineralogical Museum of the Russian Academy of Sciences, Moscow, Russia (catalogue no.3642/1) |
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| Geological Setting of type material: | volcanic ejectum |
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| Associated Minerals at type locality: | |
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Physical Properties of Biachellaite |
| Lustre: | Vitreous |
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| Diaphaneity (Transparency): | Transparent |
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| Colour: | colourless |
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| Hardness (Mohs): | 5 |
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| Hardness Data: | Measured |
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| Cleavage: | Perfect
perfect on {10-10} |
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| Density (calculated): | 2.515 g/cm3 |
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Crystallography of Biachellaite |
| Crystal System: | Trigonal |
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| Class (H-M): | 3 - Pyramidal |
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| Space Group: | P3 |
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| Cell Parameters: | a = 12.913Å, c = 79.605Å
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| Ratio: | a:c = 1 : 6.165 |
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| Unit Cell Volume: | V 11495 ų |
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| Z: | 15 |
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| X-Ray Powder Diffraction: | | d-spacing | | Intensity | | 11.07 | | (19) | | 6.45 | | (18) | | 4.782 | | (15) | | 3.720 | | (100) | | 3.576 | | (18) | | 3.469 | | (14) | | 3.300 | | (47) |
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Chemical Properties of Biachellaite |
| Formula: | | (Na,Ca,K) | | (Si | | Al | | O | | )(SO | | ) | | (OH) | | ·H | | O |
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| All elements listed in formula: | Al, Ca, H, K, Na, O, S, Si |
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Relationship of Biachellaite to other Species |
| Member of Group: | |
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Other Names for Biachellaite |
| 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 Biachellaite |
| Reference List: | N. V. Chukanov, R. K, Rastsvetaeva, I. V. Pekov, A. E. Zadov, R. Allori, N. V. Subkova, G. Giester, D. Yu. Pushcharovky & K. V. Van: Biachellaite (Na,Ca,K)8(Si6Al6O24)(SO4)2(OH)0.5.H2O, a new mineral of the cancrinite group.] (Russian with English abstract) Proceedings of the Russian Mineralogical Society, 137(3),57–66 (2008)
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Internet Links for Biachellaite |
| Search Engines: |
Look for Biachellaite on Google
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| External Links: | Look for Biachellaite on WebmineralLook for Biachellaite on Athena MineralogyLook for Biachellaite on WikipediaLook for Biachellaite on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure DatabaseSearch for Biachellaite in the Natural History Museum (London) online catalogue |
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| Mineral Dealers: | SpiriferMinerals.com - high quality specimensLapis Mineral MagazinFabre Minerals - search for Biachellaite specimensSearch for - Biachellaite - on e-Rocks Mineral Sales & Auctionsrare and unusual minerals mainly crystallizedTop quality minerals from Kristalle of CaliforniaFind Biachellaite on www.crystalclassics.co.ukHigh-end worldwide specimens & outstanding customer serviceWendel Minerals - Auktion & ShopWilensky Fine MineralsBuy Fine Minerals from mineralsweb.comDAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities. |
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Localities for Biachellaite |
