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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 Earth's subsurface, but weathers quickly on the surface.
Name Image Origin Description Aglandau (Blanquette, Plant d'Aix, Verdale de Carpentras) : France, Australia, Azerbaijan and Ukraine: Known as Beruguette as a table olive. Known as Nichitskaia in Azerbaijan and Ukraine
Peridotite (US: / ˈ p ɛ r ɪ d oʊ ˌ t aɪ t, p ə ˈ r ɪ d ə-/ PERR-ih-doh-tyte, pə-RID-ə-) is a dense, coarse-grained igneous rock consisting mostly of the silicate minerals olivine and pyroxene.
Monticellite and kirschsteinite (commonly also spelled kirschteinite [3]) are gray silicate minerals of the olivine group with compositions Ca Mg Si O 4 and CaFeSiO 4, respectively.. Most monticellites have the pure magnesium end-member composition but rare ferroan monticellites and magnesio-kirschsteinite are found with between 30 and 75 mol.% of the iron end memb
Some important rock-forming silicates include the feldspars, quartz, olivines, pyroxenes, amphiboles, garnets and micas. Subcategories This category has the following 8 subcategories, out of 8 total.
Graph of komatiite geochemistry MgO% vs Cr ppm, from basal flows, Wannaway, Western Australia. The pristine volcanic mineralogy of komatiites is composed of forsteritic olivine (Fo90 and upwards), calcic and often chromian pyroxene, anorthite (An85 and upwards) and chromite.
The Olivine Ice Plateau is a glacier in the Olivine Wilderness Area [1] and Aspiring National Park in New Zealand's South Island. [2] The plateau is named after the mineral olivine, which is common within the Dun Mountain Ophiolite that underlies the area. [3]
Olivines with diopside cores are found at the Igwisi Hills. Garnet and orthopyroxene is associated with the diopside. [18] Olivines are surrounded by chromite. [7] Olivines characterize the texture of the Igwisi rocks, where they form spherical inclusions. The olivines are primarily forsteritic in composition. [19]