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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.
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blue oh amphibole color formula na2 mineral inosilicates blueschist ferroglaucophane monoclinic name also specific gravity group sodic mg3al2 si8o22 system
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Glaucophane | Birefringence | δ = 0.021 | 1.00 | infobox |
| Glaucophane | Category | Inosilicates Sodic amphibole group | 1.00 | infobox |
| Glaucophane | Cleavage | Good on and on | 1.00 | infobox |
| Glaucophane | Color | Gray, navy blue, lavender-blue | 1.00 | infobox |
| Glaucophane | Crystal class | Prismatic (2/m) (same H-M symbol) | 1.00 | infobox |
| Glaucophane | Crystal habit | slender long prisms, Massive granular to columnar | 1.00 | infobox |
| Glaucophane | Crystal system | Monoclinic | 1.00 | infobox |
| Glaucophane | Diaphaneity | Translucent | 1.00 | infobox |
| Glaucophane | Dispersion | Strong | 1.00 | infobox |
| Glaucophane | Formula | ☐Na2(Mg3Al2)Si8O22(OH)2 | 1.00 | infobox |
| Glaucophane | Fracture | Brittle – conchoidal | 1.00 | infobox |
| Glaucophane | IMA symbol | Gln | 1.00 | infobox |
| Glaucophane | Luster | Vitreous – pearly | 1.00 | infobox |
| Glaucophane | Mohs scale hardness | 6.0–6.5 | 1.00 | infobox |
| Glaucophane | Optical properties | Biaxial (−) | 1.00 | infobox |
| Glaucophane | Pleochroism | Strong | 1.00 | infobox |
| Glaucophane | Refractive index | nα = 1.606 – 1.637 nβ = 1.615 – 1.650 nγ = 1.627 – 1.655 | 1.00 | infobox |
| Glaucophane | Space group | C2/m | 1.00 | infobox |
| Glaucophane | Specific gravity | 3–3.15 | 1.00 | infobox |
| Glaucophane | Streak | Grayish blue | 1.00 | infobox |
| Glaucophane | Strunz classification | 9.DE.25 | 1.00 | infobox |
| Glaucophane | is a | mineral and a mineral group belonging to the sodic amphibole supergroup of the double chain inosilicates | 0.90 | text |
| Glaucophane | is a | magnesium-rich endmember and ferroglaucophane is the iron-rich endmember.Ferroglaucophane is similar to glaucophane but is slightly denser and hence increased specific gravity | 0.90 | text |
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