what are the four factors that determine the texture and mineral content of a metamorphic rock?
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['The mineral composition of the parent rock.', 'The temperature at which metamorphism takes place.', 'The amount and type of pressure during metamorphism.', 'The types of fluids (mostly water) that are present during metamorphism.', 'The amount of time available for metamorphism.']
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During metamorphism the mineral content and texture of the protolith are changed due to changes in the physical and chemical environment of the rock. Metamorphism can be caused by burial, tectonic stress, heating by magma, or alteration by fluids.
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1.4 Physical and Chemical Properties. The physical properties of minerals include name, crystal system, color as it appears to the naked eye, streak by rubbing on streak plate, luster, hardness on the Mohs scale, and average specific gravity.
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Common metamorphic rocks include phyllite, schist, gneiss, quartzite and marble. Foliated Metamorphic Rocks: Some kinds of metamorphic rocks -- granite gneiss and biotite schist are two examples -- are strongly banded or foliated.
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These include: color, streak, hardness, luster, diaphaneity, specific gravity, cleavage, fracture, magnetism, solubility, and many more. These physical properties are useful for identifying minerals. However, they are much more important in determining the potential industrial uses of the mineral.
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The two major types of texture in metamorphic rocks are foliated rocks, which indicate an alignment of platy minerals; and nonfoliated (granular) rocks, which have no preferred alignment of minerals (may indicate a lack of platy minerals).
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Crystography, hardness, scratch color, density, cleavage, habit, association and lastly visual color are the major characteristics of minerals that are used to identify them in hand specimen. They also must have a specific chemical composition although substitutions are allowed within certain limits.
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['Metallic Minerals show a metallic shine in their appearance.', 'The potential source of the metal that can be got through mining.', 'Contains metals in their chemical composition.', 'Metallic minerals contain metal in raw form.']
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These include color, crystal form, hardness, density, luster, and cleavage.
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['Grain Characteristics. The diameter or width of a clastic sediment grain determines its grain size. ... ', 'Rounding. Clastic sediment grains can be round, angular, or in-between (subangular or subrounded). ... ', 'Sorting. ... ', 'Other Aspects of Texture.']
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The conditions required to form a metamorphic rock are very specific. The existing rock must be exposed to high heat, high pressure, or to a hot, mineral-rich fluid. Usually, all three of these circumstances are met.
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Properties that help geologists identify a mineral in a rock are: color, hardness, luster, crystal forms, density, and cleavage. Crystal form, cleavage, and hardness are determined primarily by the crystal structure at the atomic level. ... Minerals are classified on the basis of their chemical composition.
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Properties that help geologists identify a mineral in a rock are: color, hardness, luster, crystal forms, density, and cleavage. Crystal form, cleavage, and hardness are determined primarily by the crystal structure at the atomic level. Color and density are determined primarily by the chemical composition.
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Metamorphic rocks are classified into two groups based on texture. The layering in a Foliated rock results from an uneven distribution of pressure during metamorphism. Foliation is a common feature in metamorphic rocks. Contain parallel layers of flat and elongated minerals.
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['state of matter (whether it is a solid, liquid or gas)', 'density.', 'temperature.', 'elasticity of the medium.']
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["Minerals Are Natural. You must find minerals in nature; substances concocted in laboratories don't qualify. ... ", 'Minerals Are Inorganic. ... ', 'Minerals Are Solids. ... ', 'Definite Chemical Composition. ... ', 'Crystalline Structure.']
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Metamorphic rocks are formed when there is a change in the heat or the pressure of their environment. Any rock, including igneous and sedimentary rocks, can become metamorphic rocks when the temperature or pressure changes. The word metamorphic means to change form, so that's what metamorphic rocks do!