Diorite - Wikipedia
Diorite is an intrusive igneous rock composed principally of the silicate minerals plagioclase feldspar (typically andesine), biotite, hornblende, and sometimes pyroxene.
Diorite : Properties, Formation, Composition and Uses - Geology …
2023年8月21日 · Definition of Diorite: Diorite is a coarse-grained igneous rock that falls within the plutonic category, meaning it forms deep beneath the Earth’s surface through the cooling and solidification of magma. It is primarily composed of plagioclase feldspar, …
Diorite Rocks: Identification, Characteristics, Pictures, and More
2024年3月31日 · The specific mineral composition of diorite, including plagioclase feldspar and hornblende, is a result of the cooling process and the chemical makeup of the original magma. Understanding the formation process of diorite rocks provides insights into their unique characteristics and helps geologists interpret the geological events that have ...
Diorite | Igneous, Intrusive, Plutonic | Britannica
diorite, medium- to coarse-grained intrusive igneous rock that commonly is composed of about two-thirds plagioclase feldspar and one-third dark-coloured minerals, such as hornblende or biotite. The presence of sodium-rich feldspar, oligoclase or andesine, in contrast to calcium-rich plagioclase, labradorite or bytownite, is the main distinction ...
Diorite: A Salt-and-Paper Looking Coarse-Grained Rock
2023年6月27日 · Diorite has mainly sodium-rich-calcium-poor plagioclase feldspar, hornblende, biotite, and sometimes pyroxene. Also, it may have small to no quartz, muscovite, olivine, and alkali feldspar, and some samples may have metamorphic mineral xenocrysts .
Pictures and Descriptions of Igneous Rock Types - ThoughtCo
2019年6月2日 · Diorite is a plutonic rock that is between granite and gabbro in composition. It consists mostly of white plagioclase feldspar and black hornblende. Unlike granite, diorite has no or very little quartz or alkali feldspar. Unlike gabbro, diorite contains sodic—not calcic—plagioclase.
Diorite: Igneous Rock - Pictures, Definition & More - Geology.com
Diorite is the name used for a group of coarse-grained igneous rocks with a composition between that of granite and basalt. It usually occurs as large intrusions, dikes, and sills within continental crust. These often form above a convergent plate boundary where an oceanic plate subducts beneath a continental plate.
Diorite - Minerals Education Coalition
Diorite is an intermediate intrusive rock which is gray to dark-gray or black and composed principally of plagioclase feldspar, biotite, and hornblende or pyroxene.
Diorite: Composition, Properties, Occurrence, Uses - Geology In
Diorite is an intrusive, coarse-grained, igneous rock, meaning it forms from the slow cooling and solidification of magma (molten rock) underground. Diorite is typically composed of plagioclase feldspar, hornblende, biotite, and/or pyroxene minerals. Plagioclase feldspar is a type of feldspar that is rich in sodium and calcium.
Diorite - Rausser College of Natural Resources
Diorite is a plutonic igneous rock composed of coarse grains of plagioclase feldspar and less than 40 percent hornblende (see amphibole) and biotite (see mica), or, more rarely, pyroxene or olivine.