mohs' scale


mohs' scale
\\ˈmōz-, -ōs(ə̇z)-\ noun
Usage: usually capitalized M
Etymology: after Friedrich Mohs died 1839 German mineralogist
1. : a scale of hardness for minerals ranging from 1 for the softest to 10 for the hardest in which 1 represents the hardness of talc; 2, gypsum; 3, calcite; 4, fluorite; 5, apatite; 6, orthoclase; 7, quartz; 8, topaz; 9, corundum; 10, diamond
2. : a revised and expanded version of the original Mohs' scale in which 1 represents the hardness of talc; 2, gypsum; 3, calcite; 4, fluorite; 5, apatite; 6, orthoclase; 7, vitreous pure silica; 8, quartz; 9, topaz; 10, garnet; 11, fused zirconia; 12, fused alumina; 13, silicon carbide; 14, boron carbide; and 15, diamond

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Mohs or Mohs' scale «mohz»,
1. a scale for classifying the relative hardness of minerals, as follows: talc 1; gypsum 2; calcite 3; fluorite 4; apatite 5; feldspar 6; quartz 7; topaz 8; corundum 9; diamond 10.
2. a modified form of this scale, arranged as follows: talc 1; gypsum 2; calcite 3; fluorite 4; apatite 5; orthoclase 6; vitreous silica 7; quartz 8; topaz 9; garnet 10; fused zirconia 11; fused alumina 12; silicon carbide 13; boron carbide 14; diamond 15.
[< Friedrich Mohs, 1773-1839, a German mineralogist, who invented it]

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[mōz; mōs; 'mōsəz]
n. a scale of hardness used in classifying minerals. It runs from 1 to 10 using a series of reference minerals, and a position on the scale depends on the ability to scratch minerals rated lower
Origin:
late 19th cent.: named after Friedrich Mohs (1773 - 1839), German mineralogist

Useful english dictionary. 2012.

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  • Mohs' scale — mōz , mōs , mō səz n 1) a scale of hardness for minerals in which 1 represents the hardness of talc; 2, gypsum; 3, calcite; 4, fluorite; 5, apatite; 6, orthoclase; 7, quartz; 8, topaz; 9, corundum; and 10, diamond 2) a revised and expanded… …   Medical dictionary

  • Mohs scale — [mōz] n. [after F. Mohs (1773 1839), Ger mineralogist] Mineralogy 1. an arbitrary scale used to indicate relative hardness, arranged in 10 ascending degrees: 1, talc; 2, gypsum; 3, calcite; 4, fluorite; 5, apatite; 6, orthoclase; 7, quartz; 8,… …   English World dictionary

  • Mohs scale — Mohs′ scale [[t]moʊz[/t]] n. mir a scale of hardness for minerals, consisting of the following degrees, in increasing hardness: talc 1; gypsum 2; calcite 3; fluorite 4; apatite 5; orthoclase 6; quartz 7; topaz 8; corundum 9; diamond 10 •… …   From formal English to slang

  • Mohs scale — noun a scale of hardness of solids; talc is 0 and diamond is 10; ordering is determined by which substance can scratch another substance • Hypernyms: ↑scale, ↑scale of measurement, ↑graduated table, ↑ordered series * * * /mohz/ a scale of… …   Useful english dictionary

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  • Mohs scale — n. Mohs Scale of Hardness, scale used to classify minerals according to their relative hardness (Mineralogy) …   English contemporary dictionary

  • Mohs scale — Moso skalė statusas T sritis chemija apibrėžtis Mineralų kietumo skalė, kurią sudaro 10 kietumo etalonų, pvz., talko kietumas 1, deimanto – 10. atitikmenys: angl. Mohs scale rus. шкала Мооса …   Chemijos terminų aiškinamasis žodynas

  • Mohs' scale — noun Etymology: Friedrich Mohs died 1839 German mineralogist Date: 1879 a scale of hardness for minerals that ranges from a value of 1 for talc to 10 for diamond …   New Collegiate Dictionary

  • Mohs scale — /mohz/ a scale of hardness used in mineralogy. Its degrees, in increasing hardness, are: talc 1; gypsum 2; calcite 3; fluorite 4; apatite 5; feldspar 6; quartz 7; topaz 8; sapphire 9; diamond 10. Abbr.: MSH [1875 80; named after F. Mohs (1773… …   Universalium

  • Mohs' scale — [məʊz] noun a scale of hardness used in classifying minerals. Origin C19: named after the German mineralogist Friedrich Mohs …   English new terms dictionary