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Mohs scale
Mohs scale M0369300 (mōz)n. A scale for classifying minerals 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: 1. talc; 2. gypsum; 3. calcite; 4. fluorite; 5. apatite; 6. orthoclase; 7. quartz; 8. topaz; 9. corundum; 10. diamond.
[After Friedrich Mohs (1773-1839), German mineralogist.]Mohs scale (məʊz) n (Minerals) a scale for expressing the hardness of solids by comparing them with ten standards ranging from talc, with a value of 1, to diamond, with a value of 10[C19: named after Friedrich Mohs (1773–1839), German mineralogist]Mohs′ scale` (moʊz)
n. 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. [1875–80; after French. Mohs (1773–1839), German mineralogist] Mohs scale (mōz) A scale used to measure the relative hardness of a mineral by its resistance to scratching. There are ten standard minerals on this scale, ranging from talc, the softest (measuring 1 on the scale), to diamond, the hardest (measuring 10 on the scale).Thesaurus| Noun | 1. |  Mohs scale - a scale of hardness of solids; talc is 0 and diamond is 10; ordering is determined by which substance can scratch another substancegraduated table, ordered series, scale, scale of measurement - an ordered reference standard; "judging on a scale of 1 to 10" |
Mohs Scale
Mohs scale[′mōz ‚skāl] (mineralogy) An empirical scale consisting of 10 minerals with reference to which the hardness of all other minerals is measured; it includes, from softest (designated 1) to hardest (10): talc, gypsum, calcite, fluorite, apatite, orthoclase, quartz, topaz, corundum, and diamond. Mohs’ Scale a ten-point scale for measuring the relative hardness of minerals. Proposed by the German scientist F. Mohs in 1811, the scale (see Table 1) comprises ten standards of hardness. | Table 1. Mohs’ scale of hardness |
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| 1 | Talc | 6 | Orthoclase | | 2 | Gypsum | 7 | Quartz | | 3 | Calcite | 8 | Topaz | | 4 | Fluorite | 9 | Corundum | | 5 | Apatite | 10 | Diamond |
The relative hardness is determined by scratching the surface of the test specimen with a standard of the Mohs’ scale. If, for example, the standard apatite, having a hardness of 5, scratches the specimen and the specimen itself leaves a mark on the surface of fluorite, the standard with a hardness of 4, then the hardness of the mineral being tested is approximately 4.5. Mohs’ scale facilitates the rapid identification of minerals. Mohs scale
Mohs scale (mōz), One of two scales measuring the hardness of materials. The original Mohs scale listed 10 sustances of increasing hardness: talc (1), gypsum (2), calcite (3), fluorite (4), apatite (5), orthoclase (6), quartz (7), topaz (8), corundum (9), and diamond (10); the modified Mohs scale lists 15 minerals and is known more commonly as the hardness scale. See: hardness scale. Mohs scale A system that qualifies minerals according to hardness, ranging from talc (1) to diamond (15).Mohs, Friedrich, German mineralogist, 1773-1839. Mohs hardness number - a number on a mineralogic scale.Mohs scale - a qualitative scale in which minerals are classified in order of their increasing hardness. Synonym(s): hardness scaleMohs scale
Words related to Mohs scalenoun a scale of hardness of solidsRelated Words- graduated table
- ordered series
- scale
- scale of measurement
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