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Lepidolite
Lepidolite (KLi2Al(Al,Si)3O10(F,OH)2 is a lilac-gray or rose-colored silicate minerals|phyllosilicate mineral of the mica group that is a secondary source of lithium.["Manual of Mineralogy, 20th Ed." by Cornelius Hurlbut and Cornelis Klein.] It is associated with other lithium-bearing minerals like spodumene in pegmatite bodies. It is one of the major sources of the rare alkali metals rubidium and caesium.[H. Nechamkin, ''The Chemistry of the Elements'', McGraw-Hill, New York, 1968.] In 1861 Robert Bunsen and Gustav Kirchhoff extracted 150 kg of lepidolite and yielded few grams of rubidium salts for analysis, and therefore discovered the new element rubidium.[
Notable occurrences: Brazil; Ural Mountains, Russia; California; Tanco Pegmatite, Bernic Lake Manitoba, Canada, Madagascar.
]References
Category:Phyllosilicates
Category:Lithium minerals
category:Potassium minerals
category:Aluminium minerals
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