orthoferrosilite
Quick Summary
Orthoferrosilite is a mineral belonging to the orthopyroxene group, which are common silicate minerals within the larger pyroxene family. Orthoferrosilite is specifically the iron-rich end member of the ferrosilite series, with a chemical composition of FeSiO3. These minerals typically form fibrous or lamellar masses and are found in igneous and metamorphic rocks, as well as meteorites. The orthopyroxene series varies in its magnesium-to-iron ratio, ranging from pure magnesium silicate (enstatite) to pure ferrous iron silicate (ferrosilite). Orthoferrosilite crystallizes in the orthorhombic system.123
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