calcium tungstate

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Related to scheelite: tungsten

cal·ci·um tung·state

a phosphor with a high stopping power for x-rays that was formerly used widely in fluoroscopic screens and intensifying screens for radiography.

calcium tungstate

CaWO4, a fluorescent material formerly used for radiologic imaging. It was used in intensifying screens to amplify the image, thereby reducing the radiation exposure to the patient.
See also: calcium
References in periodicals archive ?
Some of the earliest till geochemical studies around W mineralization analyzed the heavy mineral fraction of till to determine its W content because scheelite is a heavy mineral and would be concentrated in this fraction if present in the till (Toverud 1984; Peuraniemi and Heinanenl985; Petersen and Stendal 1987; Coker et al.
More importantly, as the Sandaozhuang molybdenum mine has reserve of scheelite associated with molybdenum, the recovery and utilization of scheelite will greatly enhance the profitability of the mine, thereby lowering the overall mining costs of the mine.
It is generally accepted that emission of tungstate with scheelite structure excited at high energy is due to radiative decay of self-trapped excitations localized at regular W[O.
The very strong presence of tungsten in the form of scheelite throughout each of our gold bearing structures has demonstrated the polymetallic nature of our deposit will have a significant cost advantage after by-product credit compared to many of our mining peers.
10%; the recoverable reserve of scheelite associated with molybdenum is 407,200 tonnes including 396,200 tonnes of industrial mine metal with an average grade of 0.
On advice from the Director of Mines, I have issued a mining lease to Australian Tungsten Pty Ltd, a wholly owned subsidiary of King Island Scheelite.
Hong Kong, Sept 12, 2012 - (ACN Newswire) - CMOC (HK:3993) recently issued an announcement on initiating offering of 542 million shares in the Mainland China with proceeds of RMB3,646 million to be raised, which will be invested in four major projects, namely, the "Clean and Efficient Resource Integrated Utilisation and Construction Project with an Annual Processing Capacity of 42,000 Tonnes of Low-grade and Complex Scheelite Ores", the Ammonium Molybdate Production Line Project with an Annual Production Capacity of 10,000 Tonnes,the High-performance Cemented Carbide Project and the Deep Processing Project of Tungsten Products and Tungsten Alloy Materials.
The discovery, in 1970, of scheelite (CaWO4) in heavy mineral concentrates from streams draining the contact between the Leinster Granite and schists near Aughrim, Co.
Information on specific occurrences can be found in the MINFILE and NORMIN databases, for Yukon and NWT, respectively, although beryl is likely more common than reported in these databases and the clever explorationist may consider searching for allied characteristics such as tourmaline, pegmatite, fluorite, scheelite, etc.
Typically, the quartz-carbonate and greisen veins contain various sulphide minerals, fluorite, scheelite, white mica, and cassiterite (Wolfson 1983).
Nearby prospects exposing copper oxide minerals, molybdenum, and scheelite indicate potential for porphyry or skarn base metal deposits.
Combined Molyhil & Desert Scheelite resource >30,000 tonnes WO3 with significant expansion potential in both Target mineralisation and exploration potential.