Norite is a mafic intrusive igneous rock composed largely of the calcium-rich plagioclase labradorite, orthopyroxene, and olivine. The name norite is derived...
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orthopyroxene gabbro, while a rock similar to norite but containing more clinopyroxene is called a clinopyroxene norite. Gabbros are also sometimes classified...
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igneous rocks norite and hypersthene-andesite, of which it forms an essential constituent. The coarse-grained labradorite-hypersthene-rock (norite) of Paul's...
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impact melt sheet composed from the base up of sub layer norite, mafic norite, felsic norite, quartz gabbro, and granophyre.[citation needed] The Whitewater...
19 KB (2,036 words) - 03:41, 27 May 2024
geological terms, black granite might be gabbro, diabase, basalt, diorite, norite, or anorthosite. Morales Demarco, Manuela; Oyhantçabal, Pedro; Stein, Karl-Jochen;...
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The Maniitsoq Norite Belt is a ~75 km x 15 km J-shaped belt of igneous norite intrusions, located in the Akia Terrane of the North Atlantic Craton, Greenland...
7 KB (726 words) - 13:14, 4 January 2024
but not limited to, jewellery, automobiles and electronics. Gabbro or norite is also quarried from parts of the complex and rendered into dimension stone...
55 KB (6,207 words) - 19:28, 12 May 2024
the southwest and Tengah to the west. Bukit Batok largely sits on Gombak norite, a geological formation that is found in high concentrations within the...
26 KB (2,003 words) - 22:51, 31 December 2023
bronzite is a constituent of many mafic to ultramafic igneous rocks, such as, norite, gabbro, and especially peridotite, and of the serpentinites which have...
4 KB (525 words) - 17:00, 9 September 2023
essentially a hypersthene-bearing monzonite. It often occurs in association with norite, anorthosite, charnockite and rapakivi granite in Proterozoic metamorphic...
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xenoliths and in ophiolites. Another occurrence is as cumulate in gabbro and norite layered intrusions. Some meteorites can also be classified as wehrlites...
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clinopyroxene – A silica-undersaturated plutonic rock with >90% nepheline Norite – igneous rockPages displaying wikidata descriptions as a fallback – A hypersthene-bearing...
14 KB (2,203 words) - 23:33, 16 April 2024
presence of shear zones; 11) presence of ultramafic sills (the Maniitsoq Norite Belt); 12) proposed widespread hydrothermal alteration; 13) a coincidence...
14 KB (1,771 words) - 09:24, 5 January 2024
percentage of calcic plagioclase. These grade into the anorthosites. Gabbro and norite often occur in the upper portions of the layered ultramafic sequences. Hornblendite...
9 KB (1,059 words) - 21:34, 3 January 2024
(2020). "Geodynamic Implications of Synchronous Norite and TTG Formation in the 3 Ga Maniitsoq Norite Belt, West Greenland". Frontiers in Earth Science...
107 KB (12,095 words) - 12:12, 23 May 2024
other PGMs are rare. The most extensive deposits have been found in the norite belt of the Bushveld Igneous Complex covering the Transvaal Basin in South...
59 KB (6,285 words) - 08:27, 28 May 2024
Complex is a hypersthene gabbro with subordinate amounts of olivine gabbro, norite, anorthositic gabbro, and pyroxenite. Igneous minerals and textures are...
3 KB (268 words) - 13:20, 1 June 2018
rocks. Magnesian orthopyroxene occurs in plutonic rocks such as gabbro (norite) and diorite. It may form small idiomorphic phenocrysts and also groundmass...
9 KB (858 words) - 17:27, 10 April 2024
rare-earth elements, phosphorus) materials, anorthosites, recrystallized norite, or recrystallized breccia. Hadley–Apennine is located west of the Montes...
16 KB (1,828 words) - 02:28, 3 August 2023
are also intermediate varieties corresponding mineralogically to norites, quartz-norites and diorites. A special feature, recurring in many members of the...
9 KB (1,053 words) - 07:40, 30 April 2024
inclusions: gabbro from Ehrsberg, serpentinites and pyroxenites near Todtmoos, norite near Horbach), which are possibly the remnants of an accretionary wedge...
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20th century. These mines are also one of the few places where "Spheroidal Norite" ("Potato Stone") is found. Askim has been an industrial city for most of...
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including monzonite and rapakivi granite Iron-rich diorite, gabbro, and norite Leucocratic mafic rocks such as leucotroctolite and leuconorite Though co-eval...
25 KB (3,081 words) - 18:17, 13 January 2024
examples of these formations include serpentines of Barberton Mountains, norites of Sekhukhuneland, quartzites of Blyde River Canyon, and the dolomites...
38 KB (3,302 words) - 06:38, 30 March 2024
with a metallic luster. The mineral occurs with mafic igneous rocks like norites, and may form from pyrite during metamorphic processes. Pyrrhotite is associated...
25 KB (2,378 words) - 03:04, 18 February 2024
consists of alkali anorthosites with relatively sodic plagioclase (An70–85), norites (plagioclase-orthopyroxene), and gabbronorites (plagioclase-clinopyroxene-orthopyroxene)...
30 KB (2,916 words) - 07:47, 9 February 2024
298 Nitrogen, pure 0.0234-0.024-0.02583-0.026 293-298-300 (N2) (1 atm) Norite 2.7 ± 0.4 List: Misener and others in Robertson page 31. 300 This summary...
139 KB (4,010 words) - 02:30, 6 April 2024
tonalite with subordinate and comagmatic trondhjemite, diorite, gabbro, norite, and a dark-colored (melanocratic), hydrous, igneous rock termed hooibergite...
26 KB (2,499 words) - 21:54, 30 January 2024
Both hornblende-rich granite and biotite-rich granite occur. Zones of norite-granite mixed rocks are also seen. Hybrid granodiorite is also recognised...
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and metabasites. Igneous pyroxenites are closely allied to gabbros and norites, from which they differ by the absence of feldspar, and to peridotites...
6 KB (749 words) - 19:20, 18 January 2024