Mineral agate 1
Smoky Quartz brownish-yellow glassy crystal point hardenss = 7 Moonstone white, grey, orange dull/pearly box-like faces hardness = 5 Apache Tear black.
Arsenic Almost Final Slides
Ga Minerals
Mineral Portfolio Mineralogy, EASC 200 Fall, 2007 Montana State - Billings Casey Heisler *referred to Wikipedia for some information.
Mineral Groups. All others: 1.5% Element Abundances Silica (SiO 4 ) 4- SILICATES Common cations that bond with silica anions Mineral Groups.
Mineral Groups
feldspar
