Pink to green pleochroism diagnostic for enstatite, pale green to pale orange perpendicular to pink-green axis
2V angle
55–90°
References
[2][3][4]
Enstatite is a mineral; the magnesium endmember of the pyroxene silicate mineral series enstatite (MgSiO3) – ferrosilite (FeSiO3). The magnesium rich members of the solid solution series are common rock-forming minerals found in igneous and metamorphic rocks. The intermediate composition, (Mg,Fe)SiO 3, has historically been known as hypersthene, although this name has been formally abandoned and replaced by orthopyroxene. When determined petrographically or chemically the composition is given as relative proportions of enstatite (En) and ferrosilite (Fs) (e.g., En80Fs20).
Enstatite is a mineral; the magnesium endmember of the pyroxene silicate mineral series enstatite (MgSiO3) – ferrosilite (FeSiO3). The magnesium rich...
Enstatite chondrites (E-type chondrites) are a rare form of meteorite, rich in the mineral enstatite. Only about 200 E-Type chondrites are currently[when...
preferring to categorise this mineral as enstatite or ferrosilite. It forms a solid solution series with the minerals enstatite and ferrosilite, being a mid-way...
of the various classification schemes is provided in the table below. Enstatite chondrites (also known as E-type chondrites) are a rare form of meteorite...
with enstatite and hypersthene to the orthorhombic series of the group. Rather than a distinct species, it is really a ferriferous variety of enstatite, which...
chondrite class H chondrite group L chondrite group LL chondrite group Enstatite chondrite class EH chondrite group EL chondrite group Other chondrite...
calcium–iron–magnesium pyroxenes are defined in the 'pyroxene quadrilateral'. The enstatite-ferrosilite series ([Mg,Fe]SiO3) includes the common rock-forming mineral...
the orthopyroxene enstatite and are often called enstatite achondrites. Their igneous origin separates them from primitive enstatite achondrites and means...
"Meteorite study suggests Earth may have been wet since it formed – Enstatite chondrite meteorites, once considered 'dry,' contain enough water to fill...
2020). "Earth's water may have been inherited from material similar to enstatite chondrite meteorites". Science. 369 (6507): 1110–1113. Bibcode:2020Sci...
incongruently is enstatite (Mg2Si2O6), which produces forsterite (Mg2SiO4) in addition to a melt richer in SiO2 when melting at low pressure. Enstatite melts congruently...
The meteorite is classified as an enstatite chondrite with unusually large proportions of pure iron (29%), enstatite, and the extremely rare mineral sinoite...
(2020). "Earth's water may have been inherited from material similar to enstatite chondrite meteorites". Science. 369 (6507): 1110–1113. Bibcode:2020Sci...
doi:10.1016/0012-821X(76)90211-9. Rubin, Alan E. (1997). "The Hadley Rille enstatite chondrite and its agglutinate-like rim: Impact melting during accretion...
of that pyrope has inclusions of coesite, and some has inclusions of enstatite and sapphirine. Pyrope is common in peridotite xenoliths from kimberlite...
intermixed with troilite, an iron sulfide. It is a minor constituent of metal enstatite chondrite meteorites. Perryite (Ni, Fe)8(Si, P)3 (PDF), Mineral Data Publishing...
cloud layer. This upper silicate cloud layer can consist out of quartz, enstatite, corundum and/or fosterite. It is however not clear if silicate clouds...
The Itqiy meteorite is an enstatite-rich stony-iron meteorite. It is classified as an enstatite chondrite of the EH group that was nearly melted and is...
cumulate; such cumulates can be 90% plagioclase:10% enstatite, through to 10% plagiclase:90% enstatite and remain a gabbro. This also alters the chemistry...
consisting mostly of the two minerals olivine and low-calcium (Ca) pyroxene (enstatite); it is named for occurrences in the Harz Mountains of Germany. It commonly...
Rhodonite is the official gemstone of the Commonwealth of Massachusetts. Enstatite, with MgSiO3 and FeSiO3 end-members Khondalite Wollastonite, CaSiO3 Warr...
the atmosphere. Enstatite achondrite – a meteorite that is mostly composed of enstatite. Usually part of the aubrite group. Enstatite chondrite – a rare...
reflectivity, yielding the M-type metallic, P-type primitive, and E-type enstatite asteroids. Additional types have been found that do not fit within these...
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