spinel


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spi·nel

also spi·nelle  (spĭ-nĕl′)
n.
1. A hard, variously colored mineral with composition MgAl2O4, having usually octahedral crystals, occurring in igneous and metamorphosed carbonate rocks, and valued as a gem. The red variety is sometimes confused with ruby.
2. Any of a group of minerals that are oxides of magnesium, iron, zinc, manganese, or aluminum.
[Italian spinella, diminutive of spina, thorn (from its sharply pointed crystals), from Latin spīna.]
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.

spinel

(spɪˈnɛl)
n
1. (Minerals) any of a group of hard glassy minerals of variable colour consisting of oxides of aluminium, magnesium, chromium, iron, zinc, or manganese and occurring in the form of octahedral crystals: used as gemstones
2. (Minerals) a hard, glassy mineral composed of magnesium-aluminium oxide found in metamorphosed limestones and many basic and ultrabasic igneous rocks. Formula: MgAl2O4
[C16: from French spinelle, from Italian spinella, diminutive of spina a thorn, from Latin; so called from the shape of the crystals]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

spi•nel

or spi•nelle

(spɪˈnɛl, ˈspɪn l)

n.
1. any of a group of minerals composed of oxides of metals (magnesium, aluminum, iron, zinc, manganese, etc.).
2. a mineral of this group, magnesium aluminum oxide, MgAl2O4, having octahedral crystals: some varieties are used as gems.
[1520–30; < French spinelle < Italian spinella <spin(a) thorn]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.spinel - a hard glassy mineral consisting of an oxide of magnesium and aluminum; occurs in various colors that are used as gemstones
atomic number 12, magnesium, Mg - a light silver-white ductile bivalent metallic element; in pure form it burns with brilliant white flame; occurs naturally only in combination (as in magnesite and dolomite and carnallite and spinel and olivine)
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
ruby spinel, spinel ruby - a spinel used as a gemstone (usually dark red)
Ceylonite, pleonaste - a dark-colored spinel containing iron
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
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He would often spend a whole day settling and resettling in their cases the various stones that be had collected, such as the olive-green chrysoberyl that turns red by lamplight, the cymophane with its wirelike line of silver, the pistachio-coloured peridot, rose-pink and wine-yellow topazes, carbuncles of fiery scarlet with tremulous, four-rayed stars, flame-red cinnamon-stones, orange and violet spinels, and amethysts with their alternate layers of ruby and sapphire.
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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.
RCCI to hold 2nd Gems, Jewellery exhibition on August 23 to 25
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.
RCCI striving to promote Gems and Jewelry sector to attract foreign investment: RCCI President
To calculate how long the magma was stored at this boundary area, the researchers used a volcanic mineral known as spinel like a tiny stopwatch or crystal clock.
Forecasting Volcanic Eruptions
Lehman and company to acquire UK-based transparent armor materials provider Spinel Technologies, LLC, the company said.
Advanced Materials Defense Technologies Acquires London-Based Spinel Technologies
M2 EQUITYBITES-July 11, 2019-Advanced Materials Defense Technologies Acquires London-Based Spinel Technologies
Advanced Materials Defense Technologies Acquires London-Based Spinel Technologies
However, it appears degassing and fluxing caused the majority of spinel and Al4C3 inclusions that were present in the before condition to be eliminated.
Molten Cleanliness Assessment in a Low-Pressure Foundry: Even with advancements, and/or the limitation of the inclusion detection and measurement techniques, it is feasible to measure quantitatively the cleanliness of molten aluminum in a metalcasting facility
Magnesium aluminate (Mg[Al.sub.2][O.sub.4]), spinel is the only intermediate compound in the phase diagram of the system MgO-[Al.sub.2][O.sub.3] [1].
Magnesite-rich mining tailings as a raw material for refractory ceramics--microstructural and thermal analysis/Magnesiidirikka kaevandusjaatme kui rasksulava keraamika tooraine kasutamine--mikrostruktuuri- ja termoanaluus
[ClickPress, Tue Apr 23 2019] Adroit Market Research launched a research study titled, "Global Transparent Ceramics Market Size 2018, By Product (Monocrystalline, Polycrystalline, and Others); By Application (Optics & Optoelectronics, Defense and Security, Aerospace, Mechanical/Chemical, Sensors and Instrumentation, Consumer, Healthcare, Energy, Others), By Material (Sapphire, YAG, Aluminium Oxynitride, Spinel, Others); By Region and Forecast 2018 to 2025".
Transparent Ceramics Market : Latest Innovations, Drivers, Dynamics and Strategic Analysis, Challeng
[USPRwire, Mon Mar 25 2019] Adroit Market Research launched a research study titled, "Global Transparent Ceramics Market Size 2018, By Product (Monocrystalline, Polycrystalline, and Others); By Application (Optics & Optoelectronics, Defense and Security, Aerospace, Mechanical/Chemical, Sensors and Instrumentation, Consumer, Healthcare, Energy, Others), By Material (Sapphire, YAG, Aluminium Oxynitride, Spinel, Others); By Region and Forecast 2018 to 2025".
Transparent Ceramics Market Research Report, Growth Trends and Competitive Analysis upto 2025

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