Quartz

Classification Silicate Luster Vitreous Diaphaneity Translucent Hardness 7 Crystal Hexagonal Occurrence and distribution Quartz is one of the most abundant minerals on earth and is found in many rock types including igneous, metamorphic, and sedimentary rocks. It is particularly common in continental crust rocks such as granites and rhyolites, and in sedimentary rocks such as […]