Igneous Rocks: Composition, Texture and Classification, Description and Occurrence, Volume 1 |
Other editions - View all
Igneous Rocks: Composition, Texture and Classification, Description and ... J.P. Iddings Limited preview - 1920 |
Igneous Rocks: Composition, Texture and Classification ..., Volume 2 Joseph Paxson Iddings No preview available - 2015 |
Common terms and phrases
acid albite alkalic aluminium amphibole andesine anorthite aphanitic augite basalt base-forming biotite body calcium character chemical composition chiefly components compounds concentration crystals differentiation diffusion dikes diopside elements equant eruption eutectic eutectic point fabric feldspar feldspathoids femic ferromagnesian minerals gases Geol glass granite pegmatite granular groundmass H₂O heat hornblende hydrogen igneous magmas igneous rocks intrusive iron isomorphous Jour K₂O kinds lava less leucite lime-soda-feldspar liquid magma magnesium magnetite mass metasilicate mica mixture molecular molecules molten magma Na2O nephelite nephelite-syenite Obsidian Occurs in granite olivine orthoclase orthosilicate oxides pegmatite phanerocrystalline phenocrysts porphyritic portion potash-feldspar potassium pressure prismoid prisms proportions pyrogenetic minerals pyroxene quartz rhyolite rock magmas salts saturation separation shapes siliceous silicon SiO2 small amounts sodalite sodium solid solidified solution spheroidal spherulites Subrang substance supersaturation surface syenite tabular take place temperature texture TiO2 tion U. S. Geological Survey viscosity volcanic