WebDiorite is a gray, coarse-grained plutonic rock. Diorite consists mainly of sodium-rich plagioclase and one or more mafic minerals such as biotite, hornblende, or pyroxene. It is the coarse-grained equivalent of andesite. Diorite may contain small amounts of quartz, microcline, and olivine. Zircon, apatite, titanite, magnetite, ilmenite, and ... WebDiorite: Coarse-Grained Intermediate Rock. Being of intermediate composition between felsic and mafic, diorite is classically a salt and pepper rock made largely of white to light gray plagioclase and black hornblende. Some diorites contain biotite as well as hornblende, and some contain up to 10% quartz. If you have more than 10% quartz, you ...
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Web93 Diorite Stock Photos Premium High Res Photos Browse 93 diorite stock photosstock photos and images available, or start a new search to explore more stock photos and … Weblast edited: 11/8/16 number of photos: 33 Diorite is a coarse-grained (phaneritic), plutonic igneous rock. It is composed mostly of sodium-rich plagioclase feldspar with some hornblende, biotite, or pyroxene. Small amounts of quartz and … citizen watch home page
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Web213 Diorite Premium High Res Photos Browse 213 diorite photos and images available, or search for diorite chisel to find more great photos and pictures. close-up of a diorite rock … WebDIORITE - Intrusive igneous, plutonic. A phaneritic igneous rock composed of essential sodic plagioclase (oligoclase or andesine) and a mafic, usually hornblende, or more rarely, biotite or pyroxene. In the IUGS classification diorite contains 0 - 5 Q, P/(A + P) >90, and the plagioclase composition < An50. The mafics are generally 10-40% of the ... WebNov 13, 2015 · Diorite. Sometimes alternatively known as black granite, diorite is a plutonic rock with a granular texture that is composed primarily of plagioclase feldspar and small amounts of hornblende, biotite, and other dark-colored minerals. The composition of the rock results in its characteristic “salt and pepper” appearance. citizen watch headquarters