Glaucophane
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Glaucophane
- Sold
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- Availability
- Sold
- Size
- 3.5 x 2 x 0.8 cm - Miniature
- Formula
- □Na2(Mg3Al2)Si8O22(OH)2 (RRUFF)
- Locality
- Ile de Groix, Morbihan, Brittany, France
Bluish grey bladed and elongated crystals suspended in matrix.
EDS Confirmed, IR tested
Glaucophane
- Formula
- [box]Na2(Mg3Al2)Si8O22(OH)2
- Crystal System
- Monoclinic
- Crystal Habit
- Massive - Fibrous, Columnar, Granular
- Cleavage
- Good, Good, None
- Luster
- Vitreous - Pearly
- Color
- gray, bluish black, lavender blue, azure blue
- Streak
- grayish blue
- Class
- Monoclinic - Prismatic
- Fracture
- Brittle - Conchoidal
- Hardness
- 6-6.5
Data courtesy of Webmineral.
- Special Info
- EDS Confirmed
- Special Info
- IR tested
- Mineralpedia
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- On Dakota Matrix
- Previously Sold Glaucophane
- On Dakota Matrix
- Other Available Glaucophane
- WebMineral
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- Mindat
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