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Colorado Prospector club members -
Click here to find your club membership benefits, links & info.
Picture provided by Mike Sandmeier
"A very common and widespread mineral with highly variable forms and colours."
Mohs hardness: 3
- pictures and more info in the CP forums.
From Wikipedia -
"Calcite crystals are trigonal-rhombohedral, though actual calcite rhombohedra are rare as natural crystals.
However, they show a remarkable variety of habits including acute to obtuse rhombohedra, tabular forms, prisms,
or various scalenohedra."
Check out the Mindat.org database for more detailed information about
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