Quartzolite, Estrie, Quebec Quartzolite or silexite is an intrusive igneous rock, in which the mineral quartz is more than 90% of the rock's felsic mi

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Quartzolite, Estrie, Quebec Quartzolite or silexite is an intrusive igneous rock, in which the mineral quartz is more than 90% of the rock's felsic mineral content.

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Photo credit: © Phil Degginger / Alamy / Afripics
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Keywords: content, estrie, feldspar, felsic, formation, high, igneous, intrusive, metamorphic, mineral, protolith, quartz, quartz-rich, quartzite, quartzolite, quebec, recrystallized, rock, silexite, silica, specimen, variant