Chemistry:Sinkankasite
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| Sinkankasite | |
|---|---|
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| General | |
| Category | Phosphate mineral |
| Formula (repeating unit) | H2MnAl(PO4)2(OH)·6H2O |
| Strunz classification | 8.DB.20 |
| Crystal system | Triclinic |
| Crystal class | Pinacoidal (1) (same H-M symbol) |
| Space group | P1 |
| Identification | |
| Color | Colorless |
| Mohs scale hardness | 4 |
| |re|er}} | Vitreous |
| Diaphaneity | Transparent |
| References | [1][2] |
Sinkankasite, mineral formula: H2MnAl(PO4)2(OH)·6H2O, was named after John Sinkankas (1915–2002), noted author and mineral collector, Scripps Institute of Oceanography.[4] It is triclinic; as colorless, bladed to prismatic crystals up to 4 mm in length, often as divergent, radial aggregates and as pseudomorphs after triphlyte crystals; occurs in the Barker pegmatite (formerly Ferguson pegmatite), east of Keystone, South Dakota, and in the Palermo pegmatite, North Groton, New Hampshire.[5]
References
- ↑ Mineralienatlas
- ↑ Mindat
- ↑ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine 85 (3): 291–320. doi:10.1180/mgm.2021.43. Bibcode: 2021MinM...85..291W. https://www.cambridge.org/core/journals/mineralogical-magazine/article/imacnmnc-approved-mineral-symbols/62311F45ED37831D78603C6E6B25EE0A.
- ↑ Burns P C, Hawthorne F C. 1995. "Sinkankasite." American Mineralogist, 80 (1995) p.620-627.
- ↑ Mitchelll, Richard S. 1986. "Who's Who in Mineral Names; John Sinkankas." Rocks and Minerals. Volume 61 (1), page 28.
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