Dunite - ALEX STREKEISEN
A dunite is an ultrabasic igneous rock dominated by essential olivine (>90% volume), often with accessory clinopyroxene, orthopyroxene, spinel, ilmenite, and magnetite. Dunite is usually …
Dunite (Dun Mountain) - ALEX STREKEISEN
A dunite is an ultrabasic igneous rock dominated by essential olivine (>90% volume), often with accessory clinopyroxene, orthopyroxene, spinel, ilmenite, and magnetite. Dunite is usually …
Dunite - Wikipedia
Dunite is the olivine-rich endmember of the peridotite group of mantle-derived rocks. Dunite and other peridotite rocks are considered the major constituents of the Earth's mantle above a …
Dunite: A Coarse-grained, Olivine-rich Greenish Plutonic Rock
Jun 25, 2023 · On a thin section, dunite will reveal an abundance of high birefringence pale-green grains of olivine. These minerals have a slightly lower relief, lack cleavage, and interlock at …
dunite - science.smith.edu
Dunite: "An ultramafic plutonic rock consisting essentially of olivine." Photos. Hand Sample Photos (4) Thin Section Photos (3) Field Photos (2) Phase and Chemical Maps (2) Typical …
dunite TS - science.smith.edu
Information about and links to thin section images of dunite plutonic igneous rocks
The Influence of Weathering on the Engineering Properties of Dunites ...
Aug 30, 2011 · Eighty-two thin sections of dunite were prepared from rock samples representing fresh to highly weathered stages. During the examination of the thin sections, mineral …
Thin sections for dunite, a, b represent views from fresh state, c, d ...
Thin sections for dunite, a, b represent views from fresh state, c, d represent slightly weathered grade, e, f represent moderately weathered grade, g, h represent highly weathered dunite...
Dunite | Mantle Rock, Olivine & Peridotite | Britannica
dunite, light yellowish green, intrusive igneous ultramafic rock that is composed almost entirely of olivine. Dunite usually forms sills (tabular bodies intruded between other rocks) but may also …
The basal dunite of the Precambrian mafic-ultramafic …
Nov 10, 2020 · Based on whole-rock geochemistry, the basal dunite is divided into a low-Fe zone (average FeOt 10.2 wt% and Ni 2250 ppm) and a high-Fe zone (average FeOt 12.5 wt% and …