- mineral hardness
- Смотри твердость минералов.
Энциклопедический словарь по металлургии. — М.: Интермет Инжиниринг. Главный редактор Н.П. Лякишев. 2000.
mineral hardness
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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
hardness — a measure of the hardness of a metal or mineral. Hardness is a property easy to appreciate but difficult to quantify and measure. The Mohs hardness scale is used in geology to give a rough estimate of hardness by testing which minerals are… … Dictionary of units of measurement
Hardness — Hard ness, n. [AS. heardness.] 1. The quality or state of being hard, literally or figuratively. [1913 Webster] The habit of authority also had given his manners some peremptory hardness. Sir W. Scott. [1913 Webster] 2. (Min.) The cohesion of the … The Collaborative International Dictionary of English
mineral — [min′ər əl, min′rəl] n. [OFr < ML minerale, neut. of mineralis, mineral < minera, ore < VL * mina,MINE2] 1. an inorganic substance occurring naturally in the earth and having a consistent and distinctive set of physical properties (e.g … English World dictionary
Mineral — For other uses, see Mineral (disambiguation). An assortment of minerals. A mineral is a naturally occurring … Wikipedia
hardness — /hahrd nis/, n. 1. the state or quality of being hard: the hardness of ice. 2. a relative degree or extent of this quality: wood of a desirable hardness. 3. that quality in water that is imparted by the presence of dissolved salts, esp. calcium… … Universalium
mineral — USGS PHOTO GLOSSARY OF VOLCANIC TERMS A mineral is a naturally occurring inorganic element or compound having an orderly internal structure and characteristic chemical composition, crystal morphology and physical properties such as density and… … Glossary of volcanic terms
Mineral physics — This article is about high pressure physics of minerals. For physical attributes of minerals like cleavage, see Mineralogy#physical mineralogy. Mineral physics is the science of materials that compose the interior of planets, particularly the… … Wikipedia
hardness — noun 1. the property of being rigid and resistant to pressure; not easily scratched; measured on Mohs scale • Ant: ↑softness • Derivationally related forms: ↑hard • Hypernyms: ↑consistency, ↑consistence, ↑eubstance, ↑ … Useful english dictionary
hardness — water with a high mineral content, the name deriving from the fact that it is hard to develop a lather for cleaning. The concentration of calcium and magnesium ions in water is expressed as p.p.m. or mg/l of calcium carbonate equivalents. Soft… … Dictionary of ichthyology
