By Anthony R. Philpotts
This accomplished laboratory guide teaches scholars taking their first direction in petrography the ideas of describing and classifying rocks in addition to the way to practice these concepts to universal igneous and metamorphic rocks. crucial positive aspects contain: a list of universal minerals with their most vital distinguishing optical houses; over 200 illustrations detailing the relation among optics and crystal morphology; an accompanying CD-ROM with colour slides illustrating rock-forming minerals and the textures of rocks, many with textual content and audio annotations by way of the writer; descriptions of the textures and constructions of igneous and metamorphic rocks; crucial houses of all of the minerals compiled in an easy-to-access, full-color desk; and a chart for choosing the approximate modal (volume) percent of minerals in rocks. The class of igneous rocks utilized in the publication is the only proposed by way of the overseas Union of Geological Sciences (IUGS) Subcommission of the Systematics of Igneous Rocks. a listing of regularly occurring rock names--many no longer a part of the IUGS classification--is keyed to this type. additionally, the commonly used Irvine- Baragar category of volcanic rocks is incorporated. Dr. Philpotts has prepared a large number of details to be simply and quickly available. He presents scholars with a concrete origin, giving them adventure and self assurance as they stumble upon the sphere of petrography.
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