charoiet
Sign in to saveAlso known as IMA1977-019
Charoite ( ) is a rare silicate mineral with the chemical composition , first described in 1978. It is named after the Chara River, despite its being away from the discovery place. When it was discovered, it was thought to be a fake, dyed purple to give it its striking appearance.
Key facts
- Mineral.name
- Charoite
- Mineral.category
- Silicate mineral
- Mineral.boxbgcolor
- e181de
- Mineral.image
- Czaroit1.jpg
- Mineral.IMAsymbol
- Cha
- Mineral.system
- Monoclinic
- Mineral.class
- Prismatic (2/m) (same H-M symbol)
- Mineral.symmetry
- P21/m
- Mineral.color
- Violet, lilac, light brown
- Mineral.habit
- Fibrous, massive
- Mineral.cleavage
- Good in three directions
- Mineral.fracture
- Conchoidal
- Mineral.mohs
- 5 - 6
- Mineral.luster
- Vitreous to pearly
- Mineral.refractive
- nα = 1.550 nβ = 1.553 nγ = 1.559
- Mineral.opticalprop
- Biaxial (+)
- Mineral.birefringence
- 0.009
- Mineral.fluorescence
- Weakly fluorescent
via Wikipedia infobox