General Information:
Chemical Formula:
Ba4(Ti,Fe+++,Fe++,Mg)4(B2Si8O27)O2Clx X=0 TO 1, with Ti > Fe
Environment:
Ba silicates near the contact with large granitic bodies. Changes to fresnoite at 960 deg C.
Locality:
Rush Creek, Fresno County, California, USA.
Name Origin:
Named for taramellite and dominance of Ti as the octahedral cation.
Physical Properties:
Cleavage:
[100] Perfect
Color:
bronze brown or purple red.
Density:
4 - 4.08, Average = 4.04
Habits:
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline)., ,
Hardness:
5.5-6 - Knife Blade-Orthoclase
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