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Dunite - Wikipedia, the free encyclopedia
Dunite (pronounced /ˈduːnaɪt/ or ) is an igneous, plutonic rock, of ultramafic composition, with coarse-grained or phaneritic texture. The mineral assemblage is greater than 90% olivine, with m...
en.wikipedia.org/wiki/Dunite |
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Color photograph of variably serpentinized dunite forming dark bands where completely altered. The banding of the sample is crosscut by later white ...
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Dunite has an ultramafic composition yet is apple green to yellowish green in color. Dunite is composed almost entirely of the mineral olivine which usually contains both iron and magnesium.
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Dunite has been extensively quarried as a building stone because of its unusual pale water-green color, but is little used now because of its high susceptibility to acid rain. Dunite is also used for refractory materials for furnaces.
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dunite in sample No. 1 had a coarse granular fracture, and was light green in color. It contained individual large grains and pockets of chromite. ...
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The color of the dunite gradually changes from green-gray to light brown, and then purple-red. Chemicopetrographic studies showed that the change in ...
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Use dunite in a Sentence ... See web results for dunite ... Color of dunite...
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Vegetation rarely grows in areas underlain by dunite, and most of Red Mountain exhibits the classic dun color seen on dunite massifs all over the world. Dunite is also a common bedrock source terrane for such elements as nickel, cobalt, chromium, and platinum group elements.
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leg : 125 section: 02 unit/subunit : 0002 hole: 0779A top int: 63 cm observer code: SAB core: 005R pieces : 4 rock name: SERPENTINIZED DUNITE (?) color : dark greenish gray (5BG 4/1) layering : none deformation: none visible ***** MAIN COMMENTS ***** ***** PRIMARY MINERALS ***** primary mineral no.1 mineral name:
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mineral composition ; chassignite ; Africa ; meteorites ; color ; olivine ; dunite ; ... Composition isotopique ; Composition minéralogique ; Chassignite ; Afrique ; Météorite ; Couleur ; Olivine ; Dunite ;
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