silica quizlet

Which Type Of Igneous Rock Would Contain The Most Silica?

by

Which Type Of Igneous Rock Would Contain The Most Silica? Felsic igneous rocks are silica rich and contain abundant potassium feldspar and quartz. Felsic igneous rocks are light in color. Mafic igneous rocks are iron and magnesium rich and contain abundant pyroxene, and calcium rich plagioclase feldspar. Which rock type has the highest SiO2 silica

Which Rock Is Low In Silica?

by

Which Rock Is Low In Silica? Mafic rocks have a relatively low silica content and are composed mostly of pyroxenes, olivines and calcic plagioclase. These rocks (basalt, gabbro) are usually dark coloured, and have a higher density than felsic rocks. Ultramafic rock is very low in silica, with more than 90% of mafic minerals (komatiite,