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Vasilseverginite 
Summary
Vasilseverginite is a very rare arsenate-sulfate mineral[3] with formula Cu9O4(AsO4)2(SO4)2. Its structure is of a new type.[2] It possesses a typical feature of many minerals of its type locality, the Tolbachik volcano, namely being a salt with oxide anions. However, it is the first Tolbachik copper oxysalt that is both arsenate and sulfate.[4] Vasilseverginite is monoclinic, with space group P21/n.[3]
| Vasilseverginite | |
|---|---|
| General | |
| Category | Arsenate mineral |
| Formula (repeating unit) | Cu9O4(AsO4)2(SO4)2 |
| IMA symbol | Vas[1] |
| Crystal system | Monoclinic |
| Crystal class | Prismatic (2/m) (same H-M symbol) |
| Space group | P21/m |
| Unit cell | a = 8.113(4) Å b = 9.918(4) Å c = 11.0225(5) Å; β = 110.86° (approximated) |
| Identification | |
| References | [2][3] |
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.
- ^ a b Pekov, I.V., Britvin, S.N., Yapaskurt, V.O., Krivovichev, S.V., Vigasina, M.F., and Sidorov, E.G., 2015. Vasilseverginite, IMA 2015-083. CNMNC Newsletter No. 28, December 2015, 1864; Mineralogical Magazine 79, 1859–1864
- ^ a b c "Vasilseverginite: Vasilseverginite mineral information and data". Mindat.org. Retrieved 2016-03-10.
- ^ "Tolbachik volcano, Kamchatka Oblast', Far-Eastern Region, Russia - Mindat.org". Mindat.org. Retrieved 2016-03-04.