Scheelite - Wikipedia
Scheelite is a calcium tungstate mineral with the chemical formula Ca W O 4. It is an important ore of tungsten (wolfram). Scheelite is originally named after Swedish chemist Carl Wilhelm Scheele (1742–1786). Well-formed crystals are sought by collectors and are occasionally fashioned into gemstones when suitably free of flaws.
Scheelite | Properties, Formation, Occurrence » Minerals
2024年7月1日 · Scheelite is a calcium tungstate mineral that is commonly found in various geological environments. It is an important ore of tungsten, which is a metal known for its high melting point, density, and strength. Scheelite is named after Carl Wilhelm Scheele, a Swedish chemist who discovered tungsten in 1781.
Scheelite – Mineral Properties, Photos and Occurrence
2018年11月22日 · Scheelite is a calcium tungstate mineral that is the dominant member of a solid solution series between tungsten-rich scheelite (CaWO 4) and rare molybdenum-rich powellite (CaMoO 4), a much less common variant. This solid solution explains why most scheelites contain certain amount of molybdenum in their structure.
Calcium Tungstate - an overview | ScienceDirect Topics
Scheelite is calcium tungstate (CaWO4), and wolframite is a mixture of ferrous tungstate (FeWO 4) and manganous tungstate (MnWO 4). The ore grades of exploited tungsten depots are between 0.06% and 1.2% tungsten (Leal-Ayala et al., 2015).
Tungstate - Wikipedia
Scheelite, the mineral calcium tungstate, often contains a small amount of molybdate. Wolframite is manganese and iron tungstate, and all these are valuable sources of tungsten. Powellite is a mineral form of calcium molybdate containing a small amount of tungstate.
Scheelite | Tungsten, Ore, Mining | Britannica
scheelite, calcium tungstate mineral, CaWO 4, that is an important ore of tungsten. It acquired commercial value in the 20th century when tungsten became used in alloy steels and electric-light filaments. The mineral is named in honour of the Swedish chemist Carl Wilhelm Scheele, who obtained tungstic acid from it in 1781.
Scheelite - Details and Facts - allmineralsrock
Scheelite is a calcium tungstate mineral with the chemical formula CaWO4. It is a white to greyish-white mineral with a vitreous to adamantine luster. It has a high specific gravity of 5.9-6.1, making it one of the heaviest non-metallic minerals.
Calcium tungstate - NIST Chemistry WebBook
Use this link for bookmarking this species for future reference. The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected …
Calcium tungstate powder 7790-75-2 - MilliporeSigma
Calcium tungstate (CaWO 4) is an optical material, which can be used as a laser host material for a variety of electronic applications.It has a scheelite structure with luminescence, and thermo-luminescence properties.
The synthesis and photoluminescent properties of calcium tungstate ...
2006年3月15日 · Nanometer-scale calcium tungstate may play an essential role for its applications in future luminescent nanodevices. At present, rod-, ellipsoid- and sphere-like PbWO 4 nanostructures have been prepared in a simple anionic microemulsion system [12].