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From Tuscon
Megalodon teeth are very much like a super-sized version of the Great White Shark teeth
They can also be utilized for educational purposes
Malachite can be found in Russia and Africa currently
Calcite on Limestone Specimen quartz From TusconThese incredible Limestone specimens feature unique reflective pieces of Calcite within. These Calcite on Limestone Specimen display a cool blue with translucent clusters of Calcite. Calcite is a carbonate mineral and the most stable polymorph of calcium carbonate. The Mohs scale of mineral hardness, based on scratch hardness comparison, defines value 3 as "calcite". How is calcite formed? Calcite can form by direct precipitation from waters rich in
