Alsakharovite-Zn (IMA symbol: Ask-Zn[1]) is an extremely rare alkaline strontium zinc titanium silicate mineral from the cyclosilicates class, with the chemical formula NaSrKZn(Ti,Nb)4(Si4O12)2(O,OH)4·7H2O, from alkaline pegmatites. It belongs to the labuntsovite group.[2][3]
| Alsakharovite-Zn | |
|---|---|
| General | |
| Category | Mineral |
| Formula (repeating unit) | NaSrKZn(Ti,Nb)4(Si4O12)2(O,OH)4·7H2O |
| IMA symbol | Ask-Zn |
| Identification | |
| Color | White, light brown, colourless |
| Cleavage | None Observed |
| Fracture | Irregular/Uneven |
| Mohs scale hardness | 5 |
| Luster | Vitreous |
| Streak | White |
| Diaphaneity | Transparent, Translucent |
| Specific gravity | 2.9 |
The mineral crystallizes in the monoclinic system with space group Cm.[4]
References
edit- ^ Warr, L.N. (2021). "IMA-CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
- ^ Pekov I. V., Chukanov N. V., Zadov A. E., Rozenberg K. A. and Rastsveateva R. K. 2003: Alsakharovite-Zn, NaSrKZn(Ti,Nb)4(Si4O12)2(O,OH)4.7H2O, a new mineral of the labuntsovite group from Lovozero Massif, Kola Peninsula. Zapiski Vserossiyskogo mineralogicheskogo obshchestva, 132(1), pp. 52-58 (in Russian); [1]
- ^ http://www.mindat.org/min-26417.html Mindat
- ^ Rozenberg, K.A.; Rastsvetaeva, R.K.; Pekov, I.V.; Chukanov, N.V. (2002). "New Zn-rich representative of the labuntsovite group: crystal structure and microtwinning". Doklady Chemistry. 383 (4/6): 110–113. doi:10.1023/A:1015456306621. S2CID 92138051.
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