Quartz after Anhydrite

specimen number:
1652109

location:
Irai, Rio Grande do Sul, Brazil

description:
Flattish prismatic crystals of what were once anhydrite measuring to 3.0 cm in size, these now replaced by quartz, and scattered attractively across the top of a quartz crystal matrix. This is classic material for this locality. Typical of these slight damage is present, this one still is in very nice condition. Some of the crystals exhibit hollow nature of the replacement.

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