Ussingite
Ussingite | |
---|---|
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 |
Luster | sub-vitreous |
Streak | white |
Diaphaneity | transparent, translucent |
References | [1][2] |
Ussingite is a silicate mineral with formula Na2AlSi3O8(OH).[3]
It was named for Niels Viggo Ussing (1864–1911), Copenhagen, Denmark.
References[]
Categories:
- Phyllosilicates
- Triclinic minerals
- Minerals in space group 2
- Silicate mineral stubs