Gabbro: A Coarse-grained, Dark-Colored Plutonic Rock
Gabbro is a dense, coarse-grained, dark-colored, mostly plutonic rock. Its essential minerals are calcic plagioclase and pyroxene, but it may have minor amounts of amphibole,
Intrusive or plutonic
Kimberlite: A Rare, Brecciated Diamond Bearing Mantle Rock
Kimberlite is a potassic to ultrapotassic ultramafic rock with inequigranular texture. It is a rare type of peridotite with many xenoliths and xenocrysts, including, on
Peridotites: Dense, Coarse-Grained Ultramafic Intrusive Igneous Rocks
Peridotites are dense, coarse-grained, dark-colored ultramafic plutonic rocks with at least 40% olivine by volume. Members are dunite, kimberlite, harzburgite, wehrlite and lherzolite. Others are
A Detailed Guide into Nepheline Syenite Rocks
Nepheline syenite is a coarse-grained, pale-colored (white, gray, or pinkish) intrusive igneous rock that resembles granite. Its chemical composition is intermediate to felsic and has
Syenite: A Coarse-grained Granite-Like Plutonic Rock
Syenite is a coarse-grained, mostly light-colored intrusive rock with an intermediate to felsic composition. It has mainly alkali feldspar, lesser plagioclase, and one or more
Diorite: A Salt-and-Paper Looking Coarse-Grained Rock
Diorite is a coarse-grained, intermediate plutonic, or intrusive igneous rock. It has mainly plagioclase feldspar, biotite, hornblende, sometimes pyroxenes, and other minerals. This rock’s composition
Dunite: A Coarse-grained, Olivine-rich Greenish Plutonic Rock
Dunite is a coarse-grained, pale green to olive-green, ultramafic intrusive igneous rock with more than 90% olivine. It also may have smaller amounts of pyroxene,