olivine


Also found in: Thesaurus, Encyclopedia, Wikipedia.
Related to olivine: pyroxene

ol·i·vine

 (ŏl′ə-vēn′)
n.
A mineral silicate of iron and magnesium, principally (Mg, Fe)2SiO4, found in igneous and metamorphic rocks and used as a structural material in refractories and in cements. Also called chrysolite.

[olive (from its color) + -ine.]

ol′i·vin′ic (-vĭn′ĭk), ol′i·vi·nit′ic (-və-nĭt′ĭk) adj.

olivine

(ˈɒlɪˌviːn; ˌɒlɪˈviːn)
n
1. (Minerals) an olive-green mineral of the olivine group, found in igneous and metamorphic rocks. The clear-green variety (peridot) is used as a gemstone. Composition: magnesium iron silicate. Formula: (MgFe)2SiO4. Crystal structure: orthorhombic. Also called: chrysolite
2. (Minerals) any mineral in the group having the general formula (Mg,Fe,Mn,Ca)2SiO4
[C18: from German, named after its colour]

ol•i•vine

(ˈɒl əˌvin, ˌɒl əˈvin)

n.
any of a group of magnesium iron silicates, (Mg,Fe)2SiO4, occurring in olive-green to gray-green masses as an important constituent of basic igneous rocks. Also called chrysolite.
[1785–95; < German Olivin=Olive olive + -in -ine2]

ol·i·vine

(ŏl′ə-vēn′)
An olive-green to brownish-green mineral consisting primarily of iron, magnesium, and silica. Olivine is a common mineral in the igneous rocks, such as basalt and gabbro, that make up most of the Earth's crust beneath the oceans.

olivine

A dark green silicate.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.olivine - a mineral consisting of magnesium iron silicate; a source of magnesium
atomic number 12, magnesium, Mg - a light silver-white ductile bivalent metallic element; in pure form it burns with brilliant white flame; occurs naturally only in combination (as in magnesite and dolomite and carnallite and spinel and olivine)
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
chrysolite - a brown or yellow-green olivine found in igneous and metamorphic rocks and used as a gemstone
References in periodicals archive ?
It has been widely believed that magmas sourced from the mantle cannot directly crystallise chromite, as the mantle rocks that are being melted are rich in olivine, and therefore these melts should crystallise olivine, not chromite," said Rais Latypov from the School of Geosciences of the University of the Witwatersrand in South Africa, lead author of the study.
At least 1 billion years old and possibly the parent body of the cluster's asteroids, Eureka is known to be rich in olivine, a mineral rare in asteroids but common in the mantle of Mars as well as in Martian basins.
An important component of the rocks at the time was olivine, the same mineral that is responsible for the handful of green sand beaches that exist in the world today.
The remote sensing data for Chang'e-3's landing site showed that it was rich in olivine as well as titanium.
The researchers said that they find it striking that there is an absence of a particular mineral, olivine, on the asteroid's surface and olivine is a main component of planetary mantles and should have been found in large quantities on the surface of Vesta, due to a double meteorite impact that, according to computer simulations, "dug" the celestial body's southern pole to a depth of 80 km, catapulting large amounts of materials to the surface.
This residual nature is further confirmed by the higher Cr # in spinel and Mg # in orthopyroxene and olivine from the foliated peridotite, suggesting their derivation by higher degree of partial melting from a depleted mantle source.
Researchers in France said aluminium oxide speeded up a process by which hydrogen is produced naturally when water meets olivine, a common type of rock, under the high temperatures and pressures found at great depths.
The Dempson BAG[R] has a unique 'wide bottom' which the Olivine container sits neatly in, making transport from the point of purchase to the point of consumption easy and hassle free.
Unusual minerals like spinel and olivine found in many lunar craters, but rarely on the Moon's surface, were therefore attributed to the excavation of sub-surface lunar layers by asteroid hits.
A rare type of meteorite (shown, right) that contains chunks of the mineral olivine held together by a mix of nickel and iron.
LOS ANGELES (CyHAN)- NASA's Curiosity rover gets its first taste of Mars and finds minerals: plagioclase feldspar, pyroxene and olivine.