Schorlomite
Schorlomite is so named in 1846 because of its resemblance to schorl.
Schorlomite forms dark brown, reddish brown to black crystals up to 2 cm, masses are common.
Schorlomite has been cut into black cabochons.
Schorlomite forms dark brown, reddish brown to black crystals up to 2 cm, masses are common.
Schorlomite has been cut into black cabochons.
| General Information | ||||||||||||||||||
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| Chemical Formula |
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| Physical Properties of Schorlomite | ||||||||||||||||||
| Mohs Hardness | 7 to 7.5, Gems, Sixth Edition (2006) More from other references | |||||||||||||||||
| Specific Gravity | 3.77 to 3.93, Gems, Sixth Edition (2006) More from other references | |||||||||||||||||
| Tenacity | Brittle, Handbook of mineralogy (2001) | |||||||||||||||||
| Fracture | Conchoidal, Gems, Sixth Edition (2006) More from other references | |||||||||||||||||
| Optical Properties of Schorlomite | ||||||||||||||||||
| Refractive Index | 1.94 to 1.98, Gems, Sixth Edition (2006) | |||||||||||||||||
| Optical Character | Isotropic, Handbook of mineralogy (2001) | |||||||||||||||||
| Colour | ||||||||||||||||||
| Colour (General) | Dark brown, reddish brown to black., Gems, Sixth Edition (2006) More from other references | |||||||||||||||||
| Transparency | Translucent,Opaque, Handbook of mineralogy (2001) Translucent to nearly opaque | |||||||||||||||||
| Lustre | Vitreous,Metallic, Gems, Sixth Edition (2006) More from other references | |||||||||||||||||
| Crystallography of Schorlomite | ||||||||||||||||||
| Crystal System | Isometric, Handbook of mineralogy (2001) | |||||||||||||||||
| Habit | As trapezohedra and dodecahedra, up to 2 cm; more commonly massive., Handbook of mineralogy (2001) | |||||||||||||||||
| Geological Environment | ||||||||||||||||||
| Where found: | Occurs principally in alkaline igneous rocks such as nepheline-syenite and related types; also in skarns., Gems, Sixth Edition (2006) More from other references | |||||||||||||||||
| Further Information | ||||||||||||||||||
| Mineral information: | Schorlomite information at mindat.org | |||||||||||||||||
| Significant Gem Localities | ||||||||||||||||||
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