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Related to wolframite: scheelite, cassiterite, wulfenite


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


(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


(ˈwʊl frəˌmaɪt, ˈvɔl-)

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.
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
References in periodicals archive ?
Enrichment of scandium also occurs in aluminum phosphate minerals, beryl, cassiterite, columbite, garnet, muscovite, rare-earth minerals, and wolframite.
The existing proved reserves are 27mt of wolframite which contains the tungsten at a decent grade of 0.
The main production centres in China are in Jiangxi and Hunan provinces, extracting both wolframite and scheelite bearing ores.
Despite these successes, there are growing concerns that the entire iTSCi Program, as well as local communities and businesses across the region, are being disrupted by the disengagement of the downstream tungsten industry from Africa; there is now a very limited market for conflict-free and traceable wolframite, which is becoming of low value and stocked in different locations, program officials said.
Along with gems and other precious metals, the DRC has a rich supply of gold, cassiterite, wolframite, and coltan.
ratio of iron to manganese varies; iron-rich wolframite is known as
Ore minerals in the deposit consist of scheelite, minor wolframite, and molybdenite.
The term "conflict minerals" refers to several highly lucrative and commonly mined metallic ores including coltan, wolframite, and cassiterite, all of which are refined into precious metals (tantalum, tungsten, and tin, respectively) that form essential components of cell phones (Mineral Information Institute, 2010).
Mined largely in the DRC under questionable human rights standards, wolframite, cassiterite, coltan and gold are then processed for the manufacture of electronic components found in cellphones around the world.
The Foley's tungsten mineralisation occurs principally as wolframite ((Fe,Mn)WO3), hosted in both the stock-work around, and within a greisenised porphyry dyke.
Rwanda, too, which is rich with coltan, cassiterite and wolframite, is currently reviewing its mining laws and licences.
Records show that during the main production period from 1822 to 1893, metal production from this group of mines was approximately 3,900 tonnes of copper, 5,400 tonnes of lead, 400 tonnes of Cassiterite (tin ore), 37,300 ounces of silver and 5 tonnes of Wolframite (tungsten ore).