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Encyclopedia Britannica - Main :: PYR-RAY |
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PYROXENE , an important group of rock
Vesuvius
rock
At the present day the name pyroxene is used as a group name for all the minerals enumerated below, though sometimes it is also applied as a specific name to include the monoclinic members diopside
Orthorhombic Series .Enstatite
Bronzite (Mg,Fe)SiOi. Hypersthene (Fe, Mg) SiOa. Monoclinic Series .Diopside
Hedenbergite CaFe(SiOa)z. Schefferite (Ca,Mg) (Fe,Mn) (SiOa)2. Augite Ca(Mg,Fe)(SiO3)2with (Mg,Fe)(Al,Fe)2SiO6. Acmite NaFe ";SiOa)2. Spodumene LiAl(SiO3)2. Jadeite NaAI(SiOa)2. Wollastonite CaSiO3. Pectolite HNaCa2(SiO3)a. Rosenbuschite Na2Caa[(Si,Zr,Ti)Oa]a. Anorthic Series. Rhodonite MnSiO3. Babingtonite (Ca,Fe,Mn)SiO8.Fe2"'(SiO3)a. Hiortdahlite (Ca,Na)2F[(Si,Zr)02]. For details respecting the special
mineral
sharp
mineral
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