Holmquistite
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Physical & Optical Properties
Mohs Hardness
Crystal System
Value & Market
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About Holmquistite
Holmquistite is a lithium magnesium iron aluminosilicate member of the amphibole group, typically occurring as dark blue to violet prismatic crystals with a vitreous luster in granitic pegmatites and lithium-enriched metamorphic rocks. It was first described from Sweden in 1916 by P.J. Holmquist, and occurs additionally in Brazil, Portugal, and North America. Transparent gem-quality material is extremely rare, and faceted holmquistite is one of the more obscure lithium mineral collector gems.