ussingite

Key facts

Mineral.name

Ussingite

Mineral.image

Ussingite, Vuonnemite-294589.jpg

Mineral.caption

Ussingite from Shkatulka pegmatite, Umbozero mine (Umbozerskii mine), Alluaiv Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia

Mineral.category

Phyllosilicate minerals

Mineral.formula

Na2AlSi3O8OH

Mineral.IMAsymbol

Usg

Mineral.strunz

9.EH.20

Mineral.system

Triclinic

Mineral.class

Pinacoidal () (same H-M symbol)

Mineral.symmetry

P

Mineral.color

pale to medium violet, reddish violet; sometimes barely tinted purple

Mineral.fracture