Chemistry:Ussingite
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| Ussingite | |
|---|---|
 Ussingite from Shkatulka pegmatite, Umbozero mine (Umbozerskii mine), Alluaiv Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia | |
| General | |
| Category | Phyllosilicate minerals |
| Formula (repeating unit) | Na2AlSi3O8OH |
| Strunz classification | 9.EH.20 |
| Crystal system | Triclinic |
| Crystal class | Pinacoidal (1) (same H-M symbol) |
| Space group | P1 |
| Identification | |
| Color | pale to medium violet, reddish violet; sometimes barely tinted purple |
| Fracture | irregular/ uneven |
| Tenacity | brittle |
| Mohs scale hardness | 6–7 |
| |re|er}} | sub-vitreous |
| Streak | white |
| Diaphaneity | transparent, translucent |
| References | [1][2] |
Ussingite is a silicate mineral with formula Na2AlSi3O8(OH).[4]
It was named for Niels Viggo Ussing (1864–1911), Copenhagen, Denmark .
References
- ↑ Mindat.org Mindat
- ↑ Webmineral.com Webmineral data
- ↑ 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.
- ↑ Handbook of Mineralogy (HOM – MSA) – Ussingite
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