The Mineral schorlomite
Schorlomite is sometimes regarded as a titanium-rich variety of Andradite, but it is recognized by the IMA as a distinct mineral species. Schorlomite is a rare member of the Garnet group, and some specimens labeled as Schorlomite are really just the Melanite form of Andradite. Schorlomite is named for its resemblance to the black Tourmaline mineral Schorl.
Chemical Formula
Ca3(Fe3+,Ti)2(Si,Ti)3O12
Color
Dark brownish-black to black
Properties
Streak
Colorless |
Hardness
7 - 7.5 |
Transparency
Opaque |
Specific Gravity
3.8 - 3.9 |
Luster
Vitreous |
Cleavage
None |
Fracture
Conchoidal to uneven |
Tenacity
Brittle |
Noteworthy Localities
Schorlomite is not a common mineral. Its type locality, which has produced good individual crystals, is Magnet Cove, Hot Spring Co., Arkansas. Other localities include Jabal Bou-Agrao, Khénifra Province, Morocco; Tanfit, Ouarzazate Province, Morocco; and Hillesheim, in the Eifel Mountains of Germany.