diopside


Also found in: Encyclopedia, Wikipedia.
Related to diopside: anorthite

di·op·side

 (dī-ŏp′sīd′)
n.
A light green, monoclinic pyroxene mineral, CaMgSi2O6, used as a gemstone and refractory.

[French : di-, two (from Greek; see di-1) + Greek -opsis, -opsis.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

diopside

(daɪˈɒpsaɪd; -sɪd)
n
(Minerals) a colourless or pale-green pyroxene mineral consisting of calcium magnesium silicate in monoclinic crystalline form: used as a gemstone. Formula: CaMgSi2O6
[C19: from di-2 + Greek opsis sight, appearance + -ide]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

di•op•side

(daɪˈɒp saɪd, -sɪd)

n.
a varicolored monoclinic pyroxene mineral, calcium magnesium silicate, CaMg(SiO3)2, usu. occurring in crystals.
[1800–10; di-3 + Greek óps(is) appearance + -ide]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
Malik Saleem said that Pakistan has enormous wealth of expensive gems such as ruby, emerald, tourmaline, garnet, topaz, peridot, aquamarine, spinel, pargasite, diopside, moonstone, pink topaz, sapphire, zircon, feldspar, agate, serpentine jade, epidote, pink beryl (morganite), purple beryl, sphene, zoisite, lapis lazuli, turquoise, and kunzite etc.
Malik Shahid informed that Pakistan has enormous wealth of expensive gems such as ruby, emerald, tourmaline, garnet, topaz, peridot, aquamarine, spinel, pargasite, diopside, moonstone, pink topaz, sapphire, zircon, feldspar, agate, serpentine jade, epidote, pink beryl (morganite), purple beryl, sphene, zoisite, lapis lazuli, turquoise and kunzite etc and Pakistan could earn huge foreign exchange from exports of gems and jewelry.
There are delicate drop and tasseled jewelry to 'emulate the fringed dresses of the time.' Highlights include animal-themed earrings, like gold turtles studded with chrome diopside and diamonds and sweet rabbit earrings crafted from rose-cut diamonds in white gold.
Given also the presence of calcium (18% [+ or -] 8) and magnesium (3.2% [+ or -] 1.6), large crystals and needles of pyroxenes poor in iron formed from the matrix (diopside and wollastonite).
Speakers from Ministry of Commerce and TDAP informed the audience that Pakistan has enormous wealth of expensive gems such as ruby, emerald, tourmaline, garnet, topaz, peridot, aquamarine, spinel, pargasite, diopside, moonstone, pink topaz, sapphire, zircon, feldspar, agate, serpentine jade, epidote, pink beryl (morganite), purple beryl, sphene, zoisite, lapis lazuli, turquoise, and kunzite etc.
From the rare Siberian chrome diopside to the royal look of rubies and sapphires, there is a gemstone to please even the most seasoned style guru.
Name 1 Carbuncle 2 K feldspar 3 Albite 4 Tektite 5 Magnetite 6 Demantoid 7 Oolitic hematite 8 Pink pyroxene 9 Idocrase 10 Black hematite 11 Biotite 12 Hornblende 13 Calcite 14 Labradorite 15 Magnesite 16 Rhodonite 17 Reniform hematite 18 Banded siliceous rocks 19 Diopside 20 Selenite 21 Alabaster 22 Anhydrite 23 Moonstone 24 Barite 25 Hypersthene Table 2: Emission lines for classification based on major elements from geological samples.
The Fuzishan deposit also contains different kinds of gangue minerals, which are dominated by skarn minerals such as garnet, diopside, actinolite, and epidote (Figures 5(g) and 5(h)), and with relatively less amounts of quartz, calcite, anhydrite, K-feldspar, chlorite, and kaolinite (Figures 5(i)-5(l)).
The main rock-forming minerals include (in %) plagioclase (38-48), actinolite (up to 22), diopside (14-37), accessories - biotite, often chloritized, ilmenite, orthoclase, apatite, serpentine; quartz and carbonate.
In CIPW standard mineral calculation, diopside (DI) appeared, and corundum (C) didn't, which belongs to quasi-aluminous series (Fig.3b).
Above 850[degrees]C, the decomposition of calcite can give rise to high-temperature calcosilicates and alumino-calcosilicates, member of the pyroxene group, such as the diopside, plagioclase feldspars (anorthite), gehlenite and wollastonite (Papachristodoulou et al.