The main mineral of quartzite is quartz, which may contain mica minerals, hematite and goethite. The chemical composition of its main quartzite is quartz-SiO 2 . Quartzite is generally a massive structure with a granular crystal structure and a crystalline aggregate. Quartz is also very rich in color. Common colors are green, gray, yellow, brown, orange, white, blue, purple, red, etc.
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