Quartz  Calcite   Image

Quartz Calcite Image

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Mineral News was founded some twenty years ago and has developed a following of
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 Calcite, Quartz

Large Calcite Image

Mineral: Calcite: CaCO3  
Quartz: SiO2
Comments: Purple-colored druse of amethystine quartz and white calcite.
Location: Rio Grande do Sul, Brazil.
Scale: Sample size 20 cm.
Copyright: © Dave Barthelmy
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