Mohs scale


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Mohs scale

 (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.]
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.

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]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

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]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

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).
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.Mohs scale - a scale of hardness of solidsMohs scale - a scale of hardness of solids; talc is 0 and diamond is 10; ordering is determined by which substance can scratch another substance
graduated table, ordered series, scale, scale of measurement - an ordered reference standard; "judging on a scale of 1 to 10"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Hardness is typically measured on the Mohs scale, where a diamond is 10 and talc is 1 (Figure 1).
It has a hardness of seven on the Mohs Scale which makes it very durable.
Which property of a mineral is measured on the Mohs scale? E20 6PQ is the postcode for which square in London?
The hardness is 63-70 on Rockwell 'C' scale and 7-9 on the Mohs scale. The hardness in the barrel interior prevents any leading unlike the non-hard surface of the conventional steel barrel." In fact, it's the easiest shotgun barrel I've ever had to clean.
Hardness of a mineral is measured by fingernail, needle, steel body or quartz in Mohs scale [7].
The information is quite basic (for example they include the hardness scale for gemstones but neglect to mention the fact that it is called the Mohs scale), but is a simple introduction to some of the concepts of geology.
Appendixes include a glossary, a bibliography, information on energy production and consumption, the Mohs scale of mineral hardness, and the periodic table of elements.