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
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Encyclopedic overview
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.
Excerpted from Wikipedia’s “glaucophane” article, available under the CC BY-SA 4.0 licence.
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