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Fassaite
Fassaite is a variety of augite with a very low iron content, Ca(Mg,Fe,Al)(Si,Al)2O6.〔(Mindat )〕 It is named after the Fassa Valley, Italy. It is thought to be a contact mineral formed at high temperature on the interface between volcanic rocks and limestone. It is also reported in meteorites.〔(Simon, S. B. and L. Grossman, ''A comparative study of melilite and fassaite in Types B1 and B2 refractory inclusions,'' Geochimica et Cosmochimica Acta 70 (2006) 780–798 )〕 == References ==
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