Rocks and Minerals
Images related to the Geology on our planet; including Rocks, Minerals, Crystals, Fossils, etc.
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Celestine
Celestine with its beautiful delicate blue hue is a mineral source of Strontium. (SrSO4)
Celestine
Celestine with its beautiful delicate blue hue is a mineral source of Strontium. (SrSO4)