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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.
Kimberlite pipes are the most important source of mined diamonds today. The consensus on kimberlites is that they are formed deep within Earth's mantle . Formation occurs at depths between 150 and 450 kilometres (93 and 280 mi), potentially from anomalously enriched exotic mantle compositions, and they are erupted rapidly and violently, often ...
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 principal source of peridot olivine today is the San Carlos Apache Indian Reservation in Arizona. [ a ] It is also mined at another location in Arizona , and in Arkansas , Hawaii , Nevada , and New Mexico at Kilbourne Hole , in the US; and in Australia , Brazil , China , Egypt , Kenya , Mexico , Myanmar (Burma), Norway , Pakistan , Saudi ...
Kimberlite: formed in volcanic pipes and at least 35% olivine [9] Kimberlite is a highly brecciated variant of peridotite formed in volcanic pipes and is known for being the host rock to diamonds. Unlike other forms of peridotite, kimberlite is quite rare. [10] Pyroxene peridotite: From 40% to 90% olivine and less than 5% hornblende
However, more than one olivine-type phase may be used as a battery's cathode material. Olivine compounds such as A y MPO 4, Li 1−x MFePO 4, and LiFePO 4−z M have the same crystal structures as LiMPO 4, and may replace it in a cathode. All may be referred to as “LFP”. [citation needed] Manganese, phosphate, iron, and lithium also form an ...
Here's who gabapentin was originally approved for, what it's used for today and why it's becoming a drug of increasing concern for abuse and misuse.
Dunite may also form by the accumulation of olivine crystals on the floor of large basaltic or picritic magma chambers. These " cumulate " dunites typically occur in thick layers in layered intrusions , associated with cumulate layers of wehrlite , olivine pyroxenite , harzburgite , and even chromitite (a cumulate rock consisting largely of ...