Bakerite

General Information:
 Chemical Formula:
Ca4B4(BO4)(SiO4)3(OH)3·(H2O)
 Empirical Formula:
Ca4B4(BO4)(SiO4)3(OH)3·(H2O)
 Locality:
Corkscrew mine, Corkscrew Canyon, Death Valley, Inyo Co. California.
Physical Properties:
 Color:
colorless or white.
 Density:
2.7 - 2.9, Average = 2.8
 Diaphaniety:
Transparent
 Hardness:
4.5 - Between Fluorite and Apatite
 Luminescence:
Non-fluorescent.
 Luster:
Vitreous (Glassy)
 Streak:
white
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