已经有次观看 wencong在2015-02-10发布
简介：Scheelite is an ore, granular shape stones, white with yellow, fat and shiny. Orange, double cone crystals, crystal huge, and the tip was transparent deep orange. With calcite and muscovite symbiotic black cassiterite, scheelite and calcite which has fluorescent properties. Heating or exposure to ultraviolet light, purplish. Is the main raw material for refining tungsten.
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