Taramellite

General Information:
 Chemical Formula:
Ba4(Fe+++,Ti,Fe++,Mg,V+++)4(B2Si8O27)O2Clx x=0 to 1
 Environment:
A contact-metamorphic mineral.
 Locality:
Candoglia, in the Toce Valley, Piedmont, Italy
 Name Origin:
Named for Torquato Taramelli (1845-1922), Italian geologist.
Physical Properties:
 Cleavage:
[010] Perfect
 Color:
reddish brown, bronze purple, or brownish violet.
 Density:
3.9 - 3.92, Average = 3.91
 Diaphaniety:
Translucent to subtranslucent
 Habits:
Fibrous - Crystals made up of fibers., ,
 Hardness:
5.5 - Knife Blade
 Luster:
Vitreous - Resinous
 Streak:
brown
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