The Rocks- Igneous Rocks: Introduction: Rocks are naturally occurring solid masses. These are aggregates of minerals like feldspars, micas, amphiboles, pyroxenes, olivine, quartz, calcite, dolomite, clays, and gypsum. Some rocks also contain mineraloids, which are rigid, mineral-like substances, like volcanic glass, lacking crystalline structure. Rocks form the outer solid layer, the crus, and most of its interior, except the liquid core of the earth. Petrology: The scientific study of the character and origin of rocks is called petrology, under geology. On the basis of origin and mode of formation, rocks…
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