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Pargasite is a complex inosilicate mineral with formula NaCa2(Mg,Fe2+)4Al(Si6Al2)O22(OH)2.

It was first described for an occurrence in Pargas, Finland in 1814 and named for the locality.[3]

It occurs in high temperature regional metamorphic rocks and in the skarns within contact aureoles around igneous intrusions. It also occurs in andesite volcanic rocks and altered ultramafic rocks.[1]


1. ^ a b http://www.handbookofmineralogy.org/pdfs/pargasite.pdf Handbook of Mineralogy
2. ^ http://www.mindat.org/min-3119.html Mindat
3. ^ a b http://webmineral.com/data/Pargasite.shtml Webmineral

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