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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 ?
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.
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.
Four minerals have been targeted - coltan, a source of tantalum; cassiterite, a tin oxide ore; wolframite, which produces tungsten; and gold ores.
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.
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.
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).
Ore minerals in the deposit consist of scheelite, minor wolframite, and molybdenite.