Enstatite

Definitions

  • Webster's Revised Unabridged Dictionary
    • n Enstatite (Min) A mineral of the pyroxene group, orthorhombic in crystallization; often fibrous and massive; color grayish white or greenish. It is a silicate of magnesia with some iron. Bronzite is a ferriferous variety.
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Century Dictionary and Cyclopedia
    • n enstatite A silicate, chiefly of magnesium, with some iron, belonging to the pyroxene group. It varies in color from white to green, and crystallizes in the orthorhombic system. It is infusible before the blowpipe, whence the name. It is a common mineral in certain rocks, especially in peridotites and the serpentines derived from them; also in many meteoric stones. Bronzite is a ferriferous enstatite. Chladnite, from the Bishopville (South Carolina) meteorite, is nearly pure magnesium enstatite.
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Etymology

Webster's Revised Unabridged Dictionary
Named fr. Gr. an adversary, because infusible before the blowpipe

Usage

In literature:

BRONZITE, a member of the pyroxene group of minerals, belonging with enstatite and hypersthene to the orthorhombic series of the group.
"Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3" by Various
An enstatite-augite-diorite is sent from Alderney for road-making.
"Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 7" by Various
Enstatite and the other orthorhombic pyroxenes are distinguished from those of the monoclinic series by their optical characters, viz.
"Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 6" by Various
The hornblende of granites is usually pale green in section, the augite and enstatite nearly colourless.
"Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 3" by Various
Other dacites, especially augite- and enstatite-dacites, are darker coloured.
"Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 8" by Various
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In science:

Moreover, the ordinary chondrites appear, not primary, but rather as a secondary mixture, leaving only two types of primary matter, the oxygen -rich carbonaceous chondrite-type matter and the oxygen-starved enstatite chondrite-type matter .
Nature of Planetary Matter and Magnetic Field Generation in the Solar System
The percent alloy (mainly iron metal plus iron sulfide) of 157 ordinary chondrites and 9 enstatite chondrites plotted against a measure of oxygen content. The Earth as a whole, and especially the endo-Earth (core plus lower mantle) is like an enstatite chondrite and unlike an ordinary chondrite.
Nature of Planetary Matter and Magnetic Field Generation in the Solar System
Mercury is composed of enstatite-chondrite-like matter, as indicated by its massive core and by reflectance spectroscopic observations showing the regolith of Mercury to be virtually devoid of FeO, like the silicates of the enstatite chondrites .
Nature of Planetary Matter and Magnetic Field Generation in the Solar System
Herndon, J. M., and Suess, H. C., Can enstatite meteorites form from a nebula of solar composition?, Geochim.
Nature of Planetary Matter and Magnetic Field Generation in the Solar System
H, L, LL, and high iron enstatite EH chondrite-composition planetesimals (Elkins-Tanton & Seager 2008; Schaefer & Fegley 2009b).
Three Possible Origins for the Gas Layer on GJ 1214b
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