Updated 4d ago

Meionite

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Colorless crude prismatic crystals of meionite minor matrix.The Harding Mine is a famous Precambrian rare-element pegmatite deposit located in the Picuris Mountains of Taos County, New Mexico. Operated intermittently during the 20th century, it became a major commercial and scientific source of lithium minerals, tantalum, and beryllium. The property is currently owned and maintained by the University of New Mexico as an outdoor geological laboratory and protected site for education and research.