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spinelenUK
spi·nel also spi·nelle S0641900 (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.]spinel (spɪˈnɛl) n1. (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 gemstones2. (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]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] Thesaurus| Noun | 1. | spinel - a hard glassy mineral consisting of an oxide of magnesium and aluminum; occurs in various colors that are used as gemstonesatomic 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 compositionruby spinel, spinel ruby - a spinel used as a gemstone (usually dark red)Ceylonite, pleonaste - a dark-colored spinel containing iron |
TranslationsspinelenUK
spinel, magnesium aluminum oxide, MgAl2O4, a mineral crystallizing in the isometric system, usually as octahedrons. It occurs as an accessory mineral in basic igneous rocks, in aluminum-rich metamorphic rocks, and in contact-metamorphosed limestones. Common spinel usually ranges in color from dark green to brown or black, but transparent red, blue, and green varieties are found and are used as gemstones; Myanmar and Sri Lanka are the principal producing countries. Much gem-quality spinel is now produced synthetically.spinel[spə′nel] (mineralogy) MgAl2O4 A colorless, purplish-red, greenish, yellow, or black mineral, usually forming octahedral crystals, and characterized by great hardness; used as a gemstone. A group of minerals of general formula AB2O4, where A is magnesium, ferrous iron, zinc, or manganese, or a combination of them, and B is aluminum, ferric iron, or chromium. spinelenUK
Words related to spinelnoun a hard glassy mineral consisting of an oxide of magnesium and aluminumRelated Words- atomic number 12
- magnesium
- Mg
- mineral
- ruby spinel
- spinel ruby
- Ceylonite
- pleonaste
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