Dunite - Wikipedia
Dunite (/ ˈduːnaɪt, ˈdʌnaɪt /), also known as olivinite (not to be confused with the mineral olivenite), is an intrusive igneous rock of ultramafic composition and with phaneritic (coarse-grained) texture.
Peridotite | Properties, Composition, Formation - Geology Science
2023年9月4日 · Dunite: Dunite is a type of peridotite that is composed almost entirely of olivine, with little or no pyroxene or other minerals. It is an ultramafic rock with a high olivine content, and it often occurs as lenses or pockets within other peridotite rocks.
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 occur as lenses (thin-edged strata) or pipes (funnels, more or less oval in …
Dunite: Formation, Composition, Properties – Geology In
Dunite is an intrusive igneous rock of ultramafic composition and with a phaneritic texture. Dunite, also known as olivinite, is known for its coarse-grained texture and almost exclusive composition of the mineral olivine.
Dunite - Igneous Rocks - Sandatlas
Dunite is an ultramafic plutonic rock that is composed almost exclusively of olivine. “Ultramafic” means that mafic minerals form more than 90% on the rocks composition. Most common mafic minerals in ultramafic rocks are definitely pyroxenes and olivine (if hornblende is present it is added to pyroxenes).
Dunite: A Coarse-grained, Olivine-rich Greenish Plutonic Rock
2023年6月25日 · Dunite is a coarse-grained, pale green to olive-green, ultramafic intrusive igneous rock with more than 90% olivine. It also may have smaller amounts of pyroxene, spinel, pyrope, chromite, and other minerals. This rock is an olivine-rich endmember of the mantle-derived peridotite rocks.
Dunite - Natural Atlas
Dunite is the olivine-rich end-member 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 depth of about 400 kilometers.
Dunite Rock: Composition of Dunite Rock - YouTube
Dunite is an igneous plutonic rock of ultramafic composition with coarse-grained granular or phaneritic texture and often massive or layered. Dunite is mainly composed of mineral olivine with...
Peridotites: Dense, Coarse-Grained Ultramafic Intrusive Igneous …
2023年7月12日 · Dunite is a coarse-grained, pale olive to dark green peridotite rock with more than 90% olivine. However, it may appear tan to reddish brown when oxidized and occurs as cumulates in layered intrusions or the lower parts of ophiolite sequences.
Dunite Rock | History | Origin - Compare Nature
Dunite is a green to brownish coarse-grained igneous rock mainly consisting of olivine. Dunite is available in dark greenish - grey colors. The streak of a rock is the color of powder produced when it is dragged across an unweathered surface.