Mineral 1.0Test your knowledge of specific minerals

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  SilicateOlivine
Mg2SiO4 - Fe2SiO4

Other names/forms:
Forsterite (Mg) and Fayalite (Fe)

Most distinguishing features:
Pistachio-green colour and granular habit.

Industrial/economical uses:
Peridote (a translucent variety of olivine) is considered a 'gem' mineral. Also used as a refractory sand and infrequently as an abrasive.

  SilicateOrthoclase
KAlSi3O8

Other names/forms:
Kspar

Most distinguishing features:
Colour and evidence of exsolution with plagioclase.