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Epidote is a calcium aluminium iron sorosilicate mineral.
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mineral green crystals allanite color prismatic group monoclinic iron pleochroism many species crystal black habit optical strong references name one
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Epidote | Birefringence | δ = 0.019–0.046 | 1.00 | infobox |
| Epidote | Category | Sorosilicates | 1.00 | infobox |
| Epidote | Cleavage | {001} perfect and {100} imperfect | 1.00 | infobox |
| Epidote | Color | Pistachio green, yellow-green, greenish black, brownish-green, green, black | 1.00 | infobox |
| Epidote | Crystal class | Prismatic (2/m) (same H–M symbol) | 1.00 | infobox |
| Epidote | Crystal habit | Prismatic with striations, fibrous, massive | 1.00 | infobox |
| Epidote | Crystal system | Monoclinic | 1.00 | infobox |
| Epidote | Diaphaneity | Transparent to nearly opaque | 1.00 | infobox |
| Epidote | Formula | {Ca2}{Al2Fe3+}(SiO4)(Si2O7)O(OH) | 1.00 | infobox |
| Epidote | Fracture | Flat regular to uneven | 1.00 | infobox |
| Epidote | IMA symbol | Ep | 1.00 | infobox |
| Epidote | Luster | Vitreous to resinous | 1.00 | infobox |
| Epidote | Mohs scale hardness | 6–7 | 1.00 | infobox |
| Epidote | Optical properties | Biaxial (-) | 1.00 | infobox |
| Epidote | Pleochroism | Strong | 1.00 | infobox |
| Epidote | Refractive index | nα = 1.715–1.751 nβ = 1.725–1.784 nγ = 1.734–1.797 | 1.00 | infobox |
| Epidote | Space group | P21/m | 1.00 | infobox |
| Epidote | Specific gravity | 3.38–3.49 | 1.00 | infobox |
| Epidote | Streak | Greyish white | 1.00 | infobox |
| Epidote | Twinning | On | 1.00 | infobox |
| Epidote | is a | calcium aluminium iron sorosilicate mineral | 0.90 | text |
| Epidote | is a | abundant rock-forming mineral | 0.90 | text |
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