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 ?
In all tests a graphite float was made to remove it from ore at natural pH of the pulp, prior to rougher scheelite flotation.
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.
2, which indicated that monoclinic scheelite structure was an only XRD-detactable phase for all powders prepared in this experiment.
The most important of the relatively few tungsten-containing minerals are wolframite (iron manganese tungstate) and scheelite (calcium tungstate), which are the element's only ores.
These Scheelite veins occur within the current gold mineralized footprint at Monument Bay and could become a significant economic by-product (University of Manitoba Presentation Nov 2012).
Each target is based on the occurrence of new and/or historic high-grade gold/tungsten intercepts with visible gold and scheelite, mineralized shearing, and carbonate-sericite-silica alteration, together with coincidental soil and/or rock anomalies within the stratigraphy.
As per the initial definitive feasibility study, the Molyhil mine could produce some 400 000 t/y, delivering 2 200 t/y of scheelite product and 1 250 t/y of molybdenum concentrate.
Tungsten is the common link, with almost all of the discovered mineral systems at Falcon and Cuttaburra having significant scheelite mineralisation.
hk) published a letter of intent on initiating offering of not more than 542 million A shares 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.
Around 50 thousand tonnes of tungsten ore deposits have been estimated recently which occur in 300 km long belt main scheelite mineralization occurs, in the Mineki Gole and adjoining area, consisting of mica schist, carbonates, clinozoisite, calc-silicate quartzite, tourmaline, phyllite and feldspar rocks (Khan et ah, 2003).
fr) offered good prices on Peruvian things such as scheelite crystals on "needle" quartz from Mundo Nuevo, orange and blue barite from Cerro Warihuyn, and lustrous pink rhodonite from the San Martin (formerly Chiurucu) mine.