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Unformatted text preview: mineralogical-a magma also, but cools slowly so minerals are visible-buoyancy-sedimentary-metamorphic CLASSIFICATION 1.mineralogical (when individual minerals are visible)-association of minerals according to bowen reaction series 2.chemical (when individual minerals are not visible+for all igneous rocks) plutonic -- volcaninc (but they are chemically the same) hight temp-gabbro--basalt I temp-diorite--andesite Low temp-graniterhyolite elemental classification (graphs with increasing arrows)was discovered by Harker...
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- Fall '08