Tungsten ocher

Tungsten ocher
Tungsten Tung"sten, n. [Sw. tungsten (cf. Dan. tungsteen, G. tungstein); tung heavy (akin to Dan. tung, Icel. [thorn]ungr) + sten stone. See {Stone}.] 1. (Chem.) A rare element of the chromium group found in certain minerals, as wolfram and scheelite, and isolated as a heavy steel-gray metal which is very hard and infusible. It has both acid and basic properties. When alloyed in small quantities with steel, it greatly increases its hardness. Symbol W (Wolframium). Atomic weight, 183.6. Specific gravity, 18. [1913 Webster]

2. (Min.) Scheelite, or calcium tungstate. [Obs.] [1913 Webster]

{Tungsten ocher}, or {Tungstic ocher} (Min.), tungstate. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

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Look at other dictionaries:

  • Tungsten — Tung sten, n. [Sw. tungsten (cf. Dan. tungsteen, G. tungstein); tung heavy (akin to Dan. tung, Icel. [thorn]ungr) + sten stone. See {Stone}.] 1. (Chem.) A rare element of the chromium group found in certain minerals, as wolfram and scheelite, and …   The Collaborative International Dictionary of English

  • Tungstic ocher — Tungsten Tung sten, n. [Sw. tungsten (cf. Dan. tungsteen, G. tungstein); tung heavy (akin to Dan. tung, Icel. [thorn]ungr) + sten stone. See {Stone}.] 1. (Chem.) A rare element of the chromium group found in certain minerals, as wolfram and… …   The Collaborative International Dictionary of English

  • Mining in Iran — Industry and Mining from U.S. Central Intelligence Agency map of Iran 1978. Mining in Iran is under developed. Yet the country is one of the most important mineral producers in the world, ranked among 15 major mineral rich countries,[1] holding… …   Wikipedia

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