Mohs Scale of Hardness or Mohs Scale

   A scale for classifying stones based on relative hardness, determined by the ability of harder minerals to scratch softer ones. The scale includes the following minerals, in order from softest to hardest:

Glossary of Art Terms. 2014.

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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 — or MoHS can refer to: Friedrich Mohs, a 19th century German geologist who developed: Mohs scale of mineral hardness, a scale used in materials science to describe hardness Frederic E. Mohs, an American doctor who developed: Mohs surgery, a… …   Wikipedia

  • 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 — 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… …   Useful english 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 of mineral hardness — The Mohs scale of mineral hardness characterizes the scratch resistance of various minerals through the ability of a harder material to scratch a softer material. It was created in 1812 by the German geologist and mineralogist Friedrich Mohs and… …   Wikipedia

  • Mohs hardness — Rough measure of the resistance of a smooth surface to scratching or abrasion, expressed in terms of a scale devised by German mineralogist Friedrich Mohs in 1812. Minerals are ranked in comparison with the Mohs scale, which is made up of 10… …   Universalium

  • Mohs hardness scale and observations on hardness of some additional materials — ▪ Table Mohs hardness scale and observations on hardness of some additional materials mineral Mohs hardness other materials observations on the minerals talc   1 very easily scratched by the fingernail; has a greasy feel gypsum   2 Mohs hardness… …   Universalium

  • 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;… …   Useful english dictionary

  • 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

  • Mohs , Friedrich — (1773–1839) German mineralogist Mohs was born at Gernrode in Saxony and studied at Halle and at the Freiberg Mining Academy under Abraham Werner. In 1812 he became curator of the mineral collection at the Johanneum in Graz. He succeeded Werner at …   Scientists


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