Liddicoatite Tourmaline

Unknown Owner

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A 71-gram, well balanced, equant crystal of classic Madagascar liddicoatite, a rare tourmaline group species, which is strangely predominant in Madagascar! This specimen came from a pocket in 2006, mined by Dr. Federico Pezzotta. According to wikipedia: Fluor-liddicoatite is a rare member of the tourmaline group of minerals, elbaite subgroup, and the theoretical calcium endmember of the elbaite-fluor-liddicoatite series; the pure end-member has not yet been found in nature. Fluor-liddicoatite is indistinguishable from elbaite by X-ray diffraction techniques.