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A compositional group of igneous rock which indicates the rock contains substantial dark silicate minerals and calcium-rich plagioclase feldspar.
Bowen's reaction series
A concept proposed by N.L. Bowen that illustrates the relationship between magma and the minerals crystallizing from it during the formation of igneous rocks.
Chemical sedimentary rock
Sedimentary rock that is made up of material that was precipitated from water by either inorganic or organic means.
An igneous rock texture in which the crystals are roughly equal in size and large enough so that individual minerals can be identified with the unaided eye.
Any economic mineral deposit in which the desired mineral occurs as scattered particles in the rock but in good amounts to make the deposit an ore.
A sedimentary rock produced from material deposited from solution by means of evaporation of the water.
A term used to describe the specific texture of specific igneous rocks like obsidian, which contains no crystals.
A compositional group of rocks, igneous, that indicate a rocks composition to be composed of mainly light-colored silicates.
The hot, watery solution that escapes from a mass of magma during the later stages of crystallization. Hydrothermal solutions, solutions may alter the surrounding country of rock and are typically the source of significant ore deposits.
The process, usually cementation and/or compaction, of converting sediments to solid rock.
Rocks formed by the alteration of preexisting rock deep within Earth, though still in a solid state, because of heat, pressure, and/or chemically active fluids.
The changes in mineral composition and texture of a rock subjected to high temperature and pressure within Earth.
The texture of rocks consisting of large crystals embedded in a matrix of smaller crystals.
A model that illustrates the origin of the three basic rock types and the interrelatedness of Earth materials and processes.
Unconsolidated particles formed by weathering and erosion of rock, by chemical precipitation from solution in water, or from the secretions of organisms and transported by water, wind, or glaciers.
Rock created from the weathered products of preexisting rocks that have been transported, deposited, and lithified.
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