Mohs scale

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Related to Hardness scale: Vickers hardness scale

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.]

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).
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"
References in periodicals archive ?
The test site is the Northern Hemisphere's largest source of apatite, which is ranked five of 10 on the Mohs hardness scale.
Synthetic sapphire on hardness scale (Mohs) stands on 9 which is the next hardest material after diamond and possesses excellent physical and chemical properties.
In the Mohs hardness scale of 1 to 10 with 10 the hardest, Diamond is rated 10, Silestone is rated 7 while marble and granite range from 3 to 6.
Pencils are graded on a hardness scale, and any graphite grade less than #6H should not gouge solder mask.
They are tempered to RC60-61 hardness from the Rockwell hardness scale, which measures the tensile strength of materials.
Military-grade kinetic energy X-orbing protection layer is hammer-hit tough, with a 3H hardness scale rating and can even self-heal from minor impact dents.
In some areas, rock was 20,000 to 31,000 psi on the hardness scale.
If you are watching the hardness scale on your recorder, look for places where sand meets hard bottom with small breaks and peaks for red grouper.
This implies that composites of sisal with low density polyethylene can be considered to have normal hardness because according to the international hardness scale, materials with hardness values of 10-35 are considered to have low hardness while those with hardness of 35-85 are classified as normal and those with hardness of 85-100 are classified as hard as reported by Singh et al (1996).
The transparent Medalist MD-447 hydrogenated styrenic block copolymer compound is said to be so soft that it could not be measured accurately on the Shore A hardness scale used for other Medalist elastomers, the softest of which has a Shore A rating of 5.
Medalist MD-447 is so ultra-soft that it could not be measured accurately on the Shore A hardness scale used for other Medalist elastomers, the softest of which has a Shore A rating of 5.