Wolframite often associated with quartz veins symbiosis together.

Tungsten is a rare element in the earth's crust is only 0.007%, China's tungsten reserves of about 55% of the world's total reserves, ranking the first place. North, northwest and southwest are output, especially in the west of Guangxi, after Hunan, Guangdong, Jiangxi, Fujian, east Nanling Mountains area, tungsten ore up. Among them, the most concentrated in southern Jiangxi, the size of mine hundreds place, down hill, West Mountain, Kui Miyama, Pangu Hill are renowned tungsten mine.
Tungsten smelting of mineral raw materials abroad and foreign long-standing development of different tungsten ore, mainly scheelite, the total production capacity by 60%. In China, despite scheelite has proven reserves of 3.76 million t, accounting for total reserves of tungsten ore 71%, but due to some large, very large tungsten polymetallic ore deposit complex material composition, disseminated fine granularity, metallurgical technology is not yet completely resolved, and therefore at this stage is still mined quartz vein wolframite, accounting for the national mining outputs of 90%.
(2) the nature of
tungsten carbide plate is lithophile elements, mainly in the form of tungstate present in pegmatite and hydrothermal deposits; known tungsten mine about 15 species, of which there are wolframite and scheelite two kinds.
(1) wolframite (Fe, Mn) WO4, also known as wolfram, containing approximately 76% WO3, brownish black to black, which was semi-metallic luster, specific gravity of 7.1 to 7.9; belong to monoclinic crystal often has a thick plate, crystal surface often vertical lines. Wolframite often associated with quartz veins symbiosis together.
(2) scheelite CaWO4, also known as calcium tungstate ore, containing about 80% WO3, often white, sometimes slightly yellow, purple, light brown and other colors, which was adamantine luster or oil sheen, a specific gravity of 5.9 to 6.1 ; are tetragonal crystal often has double cone, mostly irregular aggregates dense granular or lumpy. Scheelite often associated with molybdenite, galena and sphalerite symbiosis together. Known mainly quartz tungsten ores - wolframite ore skarn - scheelite ore and placer and other types.