Olivine Mineral Data
Empirical Formula: Mg 1.6 Fe 2+0.4 (SiO 4) Environment: Basic and ultra basic igneous rocks. Goup species name. IMA Status: Not Approved IMA. Locality: Common world wide occurrence. Link to MinDat.org Location Data. Name Origin: Named after the green color. Name Pronunciation: Olivine. Synonym:
Olivine - Wikipedia
The mineral olivine (/ ˈɒl.ɪˌviːn /) 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 Earth's subsurface, but weathers quickly on the surface.
Olivine | Properties, Uses and Occurrence - Geology Science
2023年11月7日 · Olivine Composition. Olivine is the name given to a set of silicate minerals which have a generalized chemical composition of A2SiO4. In that generalized composition, “A” is generally Mg or Fe, however in unusual situations can be Ca, Mn, or Ni.
Olivine | Mineral, Rock & Magma | Britannica
2024年10月4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: A rock-forming mineral. Used as the gemstone peridot.
Composition of Olivine. Olivine is the name given to a group of silicate minerals that have a generalized chemical composition of A 2 SiO 4. In that generalized composition, "A" is usually Mg or Fe, but in unusual situations can be Ca, Mn, or Ni.
Olivine - Geology is the Way
Olivine is the main constituent of peridotites, in which it occurs with a forsteritic composition. Dunites are a subgroup of peridotites that consist almost entirely (> 90%) of olivine. Olivine is present also in a wide range of mafic and ultramafic igneous rocks, like cumulates, kimberlites, gabbros, basalts, and komatiites.
6.4.10: Olivine Group Minerals - Geosciences LibreTexts
2022年12月16日 · Olivine occurs predominantly in mafic and ultramafic igneous rocks. Its very mafic composition restricts its occurrence, and other mafic minerals containing the same elements with additional silicon are more abundant.
Olivine - Clark Science Center
Olivine with high to intermediate Mg/Fe composition is common in mafic and ultramafic volcanic rocks and plutonic igneous rocks. Iron rich olivines occur in alkaline and acid plutonic rocks. Relatively pure forsterite is found in metamorphosed siliceous dolomites.
Olivine - Mineralogy, Mg-Fe, Silicates | Britannica
2024年10月4日 · Gabbros and basalts typically contain forsteritic to intermediate-composition olivine ranging from 50 to 80 percent forsterite. Olivine is typically associated with calcic plagioclase, magnesium-rich pyroxenes, and iron-titanium oxides such as magnetite and ilmenite.
Olivine Group | Common Minerals
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.