igneous rock

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igneous rock: see rock rock, aggregation of solid matter composed of one or more of the minerals forming the earth's crust. The scientific study of rocks is called petrology. Rocks are commonly divided, according to their origin, into three major classes—igneous, sedimentary, and
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igneous rock

Any of various crystalline or glassy, noncrystalline rocks formed by the cooling and solidification of molten earth material (magma). Igneous rocks comprise one of the three principal classes of rocks, the others being metamorphic and sedimentary rocks. Though they vary widely in composition, most igneous rocks consist of quartz, feldspars, pyroxenes, amphiboles, micas, olivines, nepheline, leucite, and apatite. They may be classified as intrusive or extrusive rocks.

igneous rock

A class of rock formed by change of the molten material to the solid state; generally termed granite if coarse-grained.

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No references found			Upon the shore he found an out-cropping of brittle, igneous rock. The Beasts of Tarzan by Burroughs, Edgar Rice View in context			Ignatius Loyola Ignatius of Antioch, Saint Ignatius of Constantinople, Saint Ignatius of Loyola, Saint Ignatov Ignatov, Nikolai Ignatov, Nikolai Grigorevich Ignatov, Sergei Ignatov, Sergei Sergeevich Ignatovich, Boris Ignatovich, Boris Vsevolodovich Ignatovka Ignatow, David Ignatyev, Nikolay, Count Ignatz Ignaz Goldziher Ignaz Philipp Semmelweis Ignaz Seipel igneous igneous complex igneous facies igneous meteor igneous mineral igneous petrology igneous province igneous rock Igneous Rocks igneous theory Ignimbrite Ignipuncture ignis fatuus ignitability ignite igniter igniter cord Igniter Fuel igniter pad igniter train igniting fuse igniting primer Ignition ignition charge ignition coil ignition delay ignition interference ignition lag ignition point ignition quality ignition reserve ignition source ignition system			Ignaz Semmelweis Ignaz Semmelweis Ignaz Semmelweis Ignaz Wrobel Ignazio Silone Ignazio Silone IGNBTDWMT IGNCA IGND Igne Natura Renovatur Integra Igne Natura Renovatur Integra igneous igneous igneous igneous complex igneous facies Igneous intrusion Igneous intrusion Igneous intrusion Igneous intrusion Igneous intrusion igneous meteor igneous mineral igneous petrology Igneous plutonic rock Igneous plutonic rock Igneous plutonic rock Igneous plutonic rock Igneous plutonic rock igneous province igneous rock Igneous rocks Igneous rocks Igneous rocks Igneous Schist Igneous Schist Igneous Schist igneous theory Igneous volcanic rock Igneous volcanic rock Igneous volcanic rock Igneous, Undifferentiated ignes fatui ignes fatui ignes fatui ignescent IGNF IGNFA IGNFI IGNH IGNHL Ignicolist Igniferous Ignifluous Ignify Ignigenous ignimbrite ignimbrite ignipeditis Ignipotence Ignipotent

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