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MINERALS AND ROCKS THEIR PROPERTIES AND USES ROCKS, mostly thick, crudely stratified layers and used widely in the construction industry. ... Most garnets are found in metamorphic rocks such as schist and gneiss.

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gneiss - CHC Linux Server, In buildIng stone Industry ... lenticular mIneral graIns or aggregates with the appearance of eyes scattered through the rock. Schist: similar to gneiss In ...

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Construction Materials Industry Snapshot - NYTimes.com, ... quarrying and primary processing of raw materials involved in road and building construction. The industry includes ... rock, clay, gneiss, granite, line ...