Definitions for "amphibolite"
Related Terms:
Skarn, Arkose, Eclogite, Serpentinite, Carbonatite, Ultramafic rock, Sericite, Granulite, Aplite, Pegmatite, Dolomite, Peridotite, Greenstone , Greenschist, Ultramafic, Granite, Crystalline, Siliceous, Gneiss, Dolomitic limestone, Pyroxenite, Hornfels, Feldspar, Anhydrite, Schists, Migmatite, Clay minerals, Porphyroblast, Calcite, Dolostone, Graywacke, Mafic, Chlorite, Sandstone, Calcareous, Olivine, Basic, Felsic, Felsite, Argillite, Pyroxene, Limestone, Tufa, Muscovite, Syenite, Schist, Carbonate rock, Greywacke, Hypersthene, Mineralization
a metamorphic rock composed chiefly of amphibole and plagioclase.
A medium-grained dark coloured metamorphic rock composed of hornblonde and other minerals. Formed by medium grade metamorphism of basic igneous rocks.
A metamorphic rock consisting mostly of amphibole and plagioclase feldspar.
A metamorphic rock consisting mainly (but not entirely) of amphibole, usually with an oriented rock fabric.
A metamorphic rock consisting chiefly of hornblende, or of at least one member of the amphibole group of minerals. It is , as a rule, a synonym of hornblende schists, but is preferable to the latter when a highly foliated structure is not found.
a crystalline metamorphic rock consisting mainly of amphibole and plagioclase, with little or no quartz. The amphibole usually is hornblende. Officially, it is non-foliated (not layered), but the name often is applied to hornblende-plagioclase schist as well.
a metamorphic rock type. In this case, it defines specific temperature and pressure conditions
Dark-colored, fine-to coarse-grained, massive to poorly layered metamorphic rock containing amphibole and plagioclase with little or no quartz.
A mostly nonfoliated metamorphic rock consisting primarily of amphibole and plagioclase feldspar.
Metamorphic rock composed essentially of amphiboles or dark coloured minerals such as hornblende. Usually derived from submarine basalt.
A crystalloblastic rock consisting mainly of amphibole and plagioclase with little or no quartz. As the content of quartz increases, the rock grades into hornblende-plagioclase gneiss.
A rock made up mostly amphibole and plagioclase feldspar. Although the name amphibolite usually refers to a type of metamorphic rock, an igneous rock composed dominantly of amphibole can be called an amphibolite too.
A gneiss or schist largely made up of amphibole and plagioclase minerals.
a metamorphic rock that is formed when basalt is subjected to heat and pressure to alter the mineral components; characterized by large dark colored crystals
A dark-colored, medium-grained rock containing amphibole and plagioclase.
mesozonal metamorphic rock composed of amphibole (hornblende) and plagioclase.
A mafic metamorphic rock consisting mainly of the minerals hornblende and plagioclase
Amphibolite (IPA: ) is the name given to a rock consisting mainly of hornblende amphibole, the use of the term being restricted, however, to metamorphic rocks. The modern terminology for a holocrystalline plutonic igneous rocks rock composed primarily of hornblende amphibole is a hornblendite, which are usually crystal cumulates. Rocks with >90% amphibole which have a feldspar groundmass may be a lamprophyre.