YR brown abundant mm angular Quartz SiO2 Plagioclase NaAlSi3O8 – CaAl2Si2O8 Sanidine (K,Na)AlSi3O8 Olivine (Mg,Fe)2SiO4 Monticellite Ca(Mg,Fe)2SiO4 7a Red 2.5 4 6 Red Very Most 0.05 Fair Sub Quartz SiO2 YR abundant 0.1 mm, rounded – Plagioclase NaAlSi3O8 – rest 0.3 with few – CaAl2Si2O8 0.5 mm larger very Sanidine (K,Na)AlSi3O8 angular Unknown
YR brown abundant mm angular Quartz SiO2 Plagioclase NaAlSi3O8 – CaAl2Si2O8 Sanidine (K,Na)AlSi3O8 Olivine (Mg,Fe)2SiO4 Monticellite Ca(Mg,Fe)2SiO4 7a Red 2.5 YR 4 6 Red Very abundant Most 0.05 – 0.1 mm, rest 0.3 – 0.5 mm Fair Sub rounded with few larger very angular Quartz SiO2 Plagioclase NaAlSi3O8 – CaAl2Si2O8 Sanidine (K,Na)AlSi3O8 Unknown
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