Calcite - Ojuela mine, Mapimi, Durango, Mexico
Colorless hexagonal calcite with relatively thick petals and...
Very bright apple-green crystals of cuproadamite (copper-rich adamite) on limonite.
3.5 x 3.2 x 2.7 cm
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Colorless hexagonal calcite with relatively thick petals and...
Front and back crystallized piece : on the front, well...
A deep violet fluorite antozonite, with bright surfaces, and...
A number of small aurichalcite stars on a stabilised limonite...
Aurichalcite crystallized on the surface and also in small...