YR 2.5 1 CaAl2Si2O8 (core) Sanidine (K,Na)AlSi3O8 Microcline KAlSi3O8 2 Reddish 5 YR 2.5 1 Black Abundant 0.05 1.0 Very Angular Quartz SiO2 – black mm, most poor Calcite CaCO3 around Kaersutite 0.2mm Sanidine (K,Na)AlSi3O8 (Mg,Fe)SiO3 Plagioclase NaAlSi3O8 – CaAl2Si2O8
YR (core) 2.5 1 CaAl2Si2O8 Sanidine (K,Na)AlSi3O8 Microcline KAlSi3O8 2 Reddish black 5 YR 2.5 1 Black Abundant 0.05 – 1.0 mm, most around 0.2mm Very poor Angular Quartz SiO2 Calcite CaCO3 Kaersutite Sanidine (K,Na)AlSi3O8 (Mg,Fe)SiO3 Plagioclase NaAlSi3O8 – CaAl2Si2O8
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