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Schorlomite

General Information
Chemical Formula
Ca
 
3
(Ti
4+
 
,Fe
3+
 
)
 
2
(Si,Fe
3+
 
)
 
3
O
 
12
Anthony et al, Handbook of mineralogy (2001)
Physical Properties of Schorlomite
Mohs Hardness7 to 7.5
Anthony et al, Handbook of mineralogy (2001)
Specific Gravity3.69 to 3.88
Anthony et al, Handbook of mineralogy (2001)
TenacityBrittle
Anthony et al, Handbook of mineralogy (2001)
FractureConchoidal
Anthony et al, Handbook of mineralogy (2001)
Optical Properties of Schorlomite
Optical CharacterIsotropic
Anthony et al, Handbook of mineralogy (2001)
Colour
Colour (General)Grayish black, black, may be tarnished blue; deep reddish brown.
Anthony et al, Handbook of mineralogy (2001)
TransparencyTranslucent,Opaque
Anthony et al, Handbook of mineralogy (2001) Translucent to nearly opaque
LustreVitreous
Anthony et al, Handbook of mineralogy (2001)
Crystallography of Schorlomite
Crystal SystemIsometric
Anthony et al, Handbook of mineralogy (2001)
HabitAs trapezohedra and dodecahedra, up to 2 cm; more commonly massive.
Anthony et al, Handbook of mineralogy (2001)
Geological Environment
Where found:In carbonatites, syenites, and phonolites; also in skarns.
Anthony et al, Handbook of mineralogy (2001)
Further Information
Mineral information:Schorlomite information at mindat.org
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