Olivine - Wikipedia
网页The mineral olivine (/ ˈ ɒ l. ɪ ˌ v iː n /) is a magnesium iron silicate with the chemical formula (Mg,Fe) 2 Si O 4. It is a type of nesosilicate or orthosilicate. The primary component of the Earth's upper mantle, [9] it is a common mineral in …
Olivine: A rock-forming mineral. Used as the gemstone peridot.
网页Olivine is the name of a group of rock-forming minerals that are typically found in mafic and ultramafic igneous rocks such as basalt, gabbro, dunite, diabase, and peridotite. They are usually green in color and have compositions that typically range between Mg 2 …
Olivine | Mineral, Rock & Magma | Britannica
网页2024年8月8日 · Olivines are an important rock-forming mineral group. Magnesium-rich olivines are abundant in low-silica mafic and ultramafic igneous rocks and are believed to be the most abundant constituent of the Earth’s upper mantle. Olivine also occurs in high-temperature metamorphic rocks, lunar basalts, and some meteorites.
Olivine | Properties, Uses and Occurrence - Geology Science
网页2023年11月7日 · Olivine is one of the most common minerals within the earth, and is a prime rock forming mineral. Despite this, desirable specimens and huge crystals are unusual and fashionable. Only few localities yield large examples of this mineral, even though small and microscopic grains are determined worldwide.
Olivine Group | Common Minerals - University of Minnesota Twin …
网页The olivine minerals are important rock-forming minerals in mafic igneous rocks such as basalt and gabbro, and many peridotite rocks are almost entirely composed of olivine. Olivine also occurs as well-developed crystal masses in xenoliths found in volcanic rocks.
The olivine Mineral Series - The Mineral and Gemstone Kingdom
网页Olivine is one of the most common minerals in the earth, and is a major rock forming mineral. Despite this, good specimens and large crystals are uncommon and sought after. Only few localities yield large examples of this mineral, although small and microscopic grains are found worldwide.
6.4.10: Olivine Group Minerals - Geosciences LibreTexts
网页2022年12月16日 · Olivine group minerals, belonging to the isolated tetrahedra silicate subclass, all have similar atomic arrangements. By far, the most important mineral of this group is called olivine. In contrast with some of the other silicates previously discussed, olivine chemistry is quite simple.
Olivine: a supergreen fuel - Energy, Sustainability and Society
网页2013年9月2日 · Plate-tectonic processes have pushed up enormous slabs of olivine-rich rocks from the mantle to the Earth’s surface, where they can be mined in open pit mines. Their weathering, in case of excess fluid as in wet climates, proceeds according to the following reaction below: M g 2 Si O 4 + 4 C O 2 + 4 H 2 …
Olivine - Geology is the Way
网页Olivine is a ferromagnesian nesosilicate that occurs in mafic and ultramafic rocks in the Earth’s crust. It is the most abundant mineral in the Earth’s mantle, constituting more than 50% of the upper mantle.
Olivine - Mineralogy, Mg-Fe, Silicates | Britannica
网页2024年8月8日 · Olivine is typically associated with calcic plagioclase, magnesium-rich pyroxenes, and iron-titanium oxides such as magnetite and ilmenite. This mineralogical association is diagnostic of the relatively high temperatures …