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chemically, they are igneous/metamorphic rocks composed of quartz, feldspar & ferromagnesian minerals like kiloliter, chlorite, garnet, etc. typical granite will have following chemical composition: silica (sio ) - % al o - % cao+mgo less than % feo + fe o - % alkalies - % tio less than % loss on ignition
chemically, they are igneous/metamorphic rocks composed of quartz, feldspar & ferromagnesian minerals like kiloliter, chlorite, garnet, etc. typical granite will have following chemical composition: silica (sio ) - % al o - % cao+mgo less than % feo + fe o - % alkalies - % tio less than % loss on ignition...
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