Petalite

Pet'al·ite noun [ Confer French pétalite .] (Min.) A rare mineral, occurring crystallized and in cleavable masses, usually white, or nearly so, in color. It is a silicate of aluminia and lithia.
Found on http://www.encyclo.co.uk/webster/P/65

Petalite

• (n.) A rare mineral, occurring crystallized and in cleavable masses, usually white, or nearly so, in color. It is a silicate of aluminia and lithia.
Found on http://thinkexist.com/dictionary/meaning/petalite/

Petalite

Petalite has the formulae LiAlSi4O10 and a relative hardness of 7. It is an ore of lithium. Associated with spodumene, lepidolite, tourmaline.
Found on http://www.probertencyclopaedia.com/browse/HP.HTM

Petalite

Petalite, also known as castorite, is a lithium aluminium phyllosilicate mineral LiAlSi4O10, crystallizing in the monoclinic system. Petalite is a member of the feldspathoid group. It occurs as colourless, grey, yellow, yellow grey, to white tabular crystals and columnar masses. Occurs in lithium-bearing pegmatites with spodumene, lepidolite, and ...
Found on http://en.wikipedia.org/wiki/Petalite
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