glaucophane
Sign in to saveGlaucophane is a mineral and a mineral group belonging to the sodic amphibole supergroup of the double chain inosilicates, with the chemical formula Na2(Mg3Al2)Si8O22(OH)2.
Key facts
- Mineral.name
- Glaucophane
- Mineral.category
- Inosilicates Sodic amphibole group
- Mineral.image
- Glaucophane bleu de Groix.jpg
- Mineral.imagesize
- 260px
- Mineral.caption
- Glaucophane with fuchsite (white oval)
- Mineral.formula
- ☐Na2(Mg3Al2)Si8O22(OH)2
- Mineral.IMAsymbol
- Gln
- Mineral.strunz
- 9.DE.25
- Mineral.system
- Monoclinic
- Mineral.class
- Prismatic (2/m) (same H-M symbol)
- Mineral.symmetry
- C2/m
- Mineral.habit
- slender long prisms, Massive granular to columnar
- Mineral.cleavage
- Good on [110] and on [001]
- Mineral.fracture
- Brittle – conchoidal
- Mineral.mohs
- 6.0–6.5
- Mineral.luster
- Vitreous – pearly
- Mineral.streak
- Grayish blue
- Mineral.diaphaneity
- Translucent
via Wikipedia infobox
Article
6 sectionsContents
- Name
- Characteristics
- Occurrence
- See also
- References
- External links
Glaucophane is a mineral and a mineral group belonging to the sodic amphibole supergroup of the double chain inosilicates, with the chemical formula Na2(Mg3Al2)Si8O22(OH)2.
Glaucophane crystallizes in the monoclinic system.