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enstatite

   Also found in: Encyclopedia, Wikipedia 0.01 sec.
en·sta·tite  (nst-tt)
n.
A glassy, usually yellowish gray variety of orthorhombic pyroxene having a magnesium silicate base, mainly MgSiO3, usually found embedded in igneous rocks and meteorites.

[Greek enstats, adversary (because of its refractory quality) : en-, in, at, near; see en-2 + -stats, one that stands; see st- in Indo-European roots + -ite.]

enstatite [ˈɛnstəˌtaɪt]
n
(Earth Sciences / Minerals) a grey, green, yellow, or brown pyroxene mineral consisting of magnesium silicate in orthorhombic crystalline form. Formula: Mg2Si2O6
[from Greek enstatēs adversary (referring to its refractory quality) + -ite1]

enstatite  (nst-tt)
A glassy, usually yellowish gray orthorhombic variety of pyroxene. It is usually found in igneous rocks and meteorites. Chemical formula: Mg2Si2O6.


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? Mentioned in ? References in periodicals archive
 
Orthopyroxene forms in primitive (high-MgO) basalts but as differentiation proceeds, it is replaced by pigeonite once the enstatite component falls below 60 to 70 atomic percent.
That mineral also predominates in a group of meteorites called enstatite achondrites.
Thermometry of the A15/4 diopside using the enstatite solvus (Nimis & Taylor 2000) indicates at least 42% of grains in the diamond zone.
 
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