Posted on January 2, 2017 by John J. Bradshaw, GG (GIA)

Introduction Clinohumite, (Mg,Fe)9(SiO4)4(F,OH)2, is a mineral species in the humite group which also includes humite, chondrodite, and norbergite. These species are easily confused with each other as they have similar properties that often overlap. The relative…

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