manganese tungstate
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Tungstate — The tungstate ion is WO42−.A tungstate (compound) is a compound containing the tungstate ion, or more complicated polymeric ions. Tungstates are salts of tungstic acid.See the for a list of tungstates.OccurrenceTungstates occur naturally with .… … Wikipedia
Tungstate magnésié — Wolframite Wolframite Catégorie III : oxydes et hydroxydes Wolframite et apatite (violet) Panasquiera Portugal (18x13cm) … Wikipédia en Français
iron manganese tungsten — noun a mineral consisting of iron and manganese tungstate in crystalline form; the principal ore of tungsten; found in quartz veins associated with granitic rocks • Syn: ↑wolframite • Hypernyms: ↑mineral • Substance Meronyms: ↑tungsten, ↑wolfram … Useful english dictionary
molybdate and tungstate minerals — naturally occurring inorganic compounds that are salts of molybdic acid, H2MoO4, and tungstic acid, H2WO4. Minerals in these groups often are valuable ores. The structural unit of these minerals is a tetrahedral group formed by four… … Universalium
Tungsten — (pronEng|ˈtʌŋstən), also known as wolfram (IPA|/ˈwʊlfrəm/), is a chemical element that has the symbol W and atomic number 74.A steel gray metal, tungsten is found in several ores, including wolframite and scheelite. It is remarkable for its… … Wikipedia
huebnerite — ˈhēbnəˌrīt, ˈhyüb noun ( s) Etymology: German hübnerit, from Adolf Hübner, 19th century German foundry superintendent + German it ite : a mineral MnWO4 consisting of manganese tungstate, having a brownish red to nearly black color, occurring in… … Useful english dictionary
Hübnerite — or hubnerite is a mineral consisting of manganese tungstate (chemical formula: MnWO4). It is the manganese endmember of the manganese iron wolframite solid solution series. It forms reddish brown to black monoclinic prismatic submetallic crystals … Wikipedia
wolframite — /wool freuh muyt , vawl /, 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. Also, wolfram. [1865 70; WOLFRAM + ITE1] * * * ▪ mineral… … Universalium
Hubner — H[ u]b ner, n. [After H[ u]bner, who analyzed it.] (Min.) A mineral of brownish black color, occurring in columnar or foliated masses. It is native {manganese tungstate} … The Collaborative International Dictionary of English
Wolfram — may refer to:*the element Tungsten, called wolfram in German and a majority of languages **Wolframite, an iron manganese tungstate mineral *Wolfram Research, a software company in headquartered in Champaign, Illinois *Wolfram syndrome, a rare… … Wikipedia
