Friday, February 24, 2017


The typical violet to pink color is characteristic of Lepidolite.   It is not only the most abundant lithium-bearing rock but also a major source of the rare alkali metals rubidium and cesium.  Since Lepidolite is a member of the mica group it is also sometimes called Lithia Mica.  Hardness is 2.5 to 4.

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