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Day mine Calcite

Calcite — Twins and Other Oddities

By Bob Jones Is there a mineral collection lacking at least one spectacular calcite? I doubt it. After all, this lovely calcium carbonate is found...

Wulfenite – Arizona Style

Editor’s Note: This is the first of a three-part series on the forthcoming February 2019 Tucson Gem and Mineral Show and its chosen theme,...

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