wolframite


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Related to wolframite: scheelite, cassiterite, wulfenite

wolf·ram·ite

 (wo͝ol′frə-mīt′)
n.
Any of several red-brown to black minerals with the general formula (Fe,Mn)WO4, which constitute a major source of tungsten.
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.

wolframite

(ˈwʊlfrəˌmaɪt)
n
(Minerals) a black to reddish-brown mineral consisting of tungstates of iron and manganese in monoclinic crystalline form: it occurs mainly in quartz veins and is the chief ore of tungsten. Formula: (Fe,Mn)WO4
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

wolf•ram•ite

(ˈwʊl frəˌmaɪt, ˈvɔl-)

n.
a mineral, iron manganese tungstate, (Fe,Mn)WO4, occurring in heavy grayish black to brownish black tabular or bladed crystals: an important ore of tungsten.
[1865–70]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.wolframite - a mineral consisting of iron and manganese tungstate in crystalline form; the principal ore of tungsten; found in quartz veins associated with granitic rocks
atomic number 74, tungsten, W, wolfram - a heavy grey-white metallic element; the pure form is used mainly in electrical applications; it is found in several ores including wolframite and scheelite
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
The new tailings dam will be instrumental to this premier mine which still produces the best quality wolframite concentrate, continuing its record-breaking journey at the steady pace of 700,000 to 750,000 tpa mining.
Kyrgyzstan has deposits with explored gold reserves of 430 thousand tons, tin metal - 208 thousand tons, wolframite - 134 thousand tons, aluminum - 349 thousand tons, coal - more than 1 billion tons, antimony - 156 thousand tons, mercury - 156 thousand tons, said MP Umbetaly Kydyraliev, a member of the parliament committee for fuel and energy complex.
Liu et al., finite element-based numerical experiments are used to investigate the influence of a hydraulic fracturing process on fluid flow and solubility of C[O.sub.2] and quartz and aim to establish a link between fluid flow and wolframite mineralization.
The company's Green Compliance Service Center in Asia actively surveys suppliers to determine whether any Conflict Minerals (columbite-tantalite [coltan]; cassiterite [tin]; gold; wolframite [tungsten]; or their derivatives) used to make product components were procured from "covered countries" such as Angola, Burundi and Rwanda.
The heavy mineral concentrates mainly consist of Fe-Ti oxides--rutile and ilmenite, widespread cassiterite, wolframite and scheelite.
Although, more than twenty tungsten bearing minerals are known, but only two of them are important for industrial use, namely wolframite (Fe, Mn) W[O.sub.4] and scheelite CaW[O.sub.4].
Besides quartz, they contain cassiterite, wolframite, sometimes also Limicas, apatite, and fluorite with a variable but usually low amount of Fe-Cu-As-Zn-Sn sulphides.
The minerals in question--coltan, a source of tantalum; cassiterite, a tin oxide ore; wolframite, which produces tungsten; and gold ores are often extracted under conditions that breach basic human rights using slave labour and child labour.
Four minerals have been targeted - coltan, a source of tantalum; cassiterite, a tin oxide ore; wolframite, which produces tungsten; and gold ores.