Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A mineral form of molybdenum sulfide, MoS2, that is the principal ore of molybdenum.
from The Century Dictionary.
- noun Sulphid of molybdenum, occurring in foliated masses or in scales, less often in hexagonal crystals, of a lead-gray color and metallic luster. It is very soft, and, like graphite, which it closely resembles, leaves a trace on paper.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Min.) A mineral occurring in soft, lead-gray, foliated masses or scales, resembling graphite; sulphide of molybdenum.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun mineralogy A
mineral ,molybdenum disulfide Mo S 2, that is the principalore ofmolybdenum ; it is structurally similar tographite and has a similar look and feel.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a mineral resembling graphite that is valued as the chief source of molybdenum and its compounds
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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Closeups of cobaltite, top, a rare ore of cobalt, and molybdenite, bottom, the main ore of molybdenum.
LME to Broaden Metals Reach Liam Pleven 2010
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Geologically, molybdenite forms in high-temperature environments such as in igneous rocks.
Molybdenum 2008
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The most important ore source of molybdenum is the mineral molybdenite.
Molybdenum 2008
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In 1778, Swedish chemist Carl William Scheele was studying, what he thought was lead, in the mineral molybdenite.
Molybdenum 2008
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Some molybdenite forms when igneous bodies contact rock and metamorphose, or change, the rock.
Molybdenum 2008
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Specifically, it is obtained from the processing of the mineral molybdenite (a molybdenum ore) that is found in porphyry copper deposits.
Rhenium 2008
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Molybdenum was extracted from the granite in Baltschieder during the second world war, from a unique occurrence where molybdenum is present in granite as molybdenite.
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Molybdenum was discovered by the Swedish scientist, Peter Hjelm in 1781, three years after Carl Scheele proposed that a previously unknown element could be found in the mineral molybdenite.
Molybdenum 2008
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Rhenium does not form minerals of its own, but it does occur as a trace element in columbite, tantalite and molybdenite.
Rhenium 2008
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The United States produces significant quantities of molybdenite from mines in Colorado, New Mexico, and Idaho.
Molybdenum 2008
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