Tungsten ore can be divided into tungsten concentrate and tungsten scheelite.
Processes to identify tungsten ore are examining the mineral, rubbing the mineral against a streak plate, dripping a small amount of diluted hydrochloric acid.
Tungsten is an element. It is a soft light grey or whitish metal. It has a quantity of practical uses, both in its pure form and as an alloy. However, how to identify them? Here are some instructions for you.
1. Examine the mineral. Wolframite ranges from black or greyish black to brown, is opaque and is slightly metallic. Scheelite is more varied.It can be tan to dark brown, golden to pale yellow, brownish yellow, reddish yellow, greenish, colorless or white. Its crystals can be transparent or opaque, and they have a shiny or glassy appearance.
2.Rub the mineral against a streak plate, a piece of plain white unglazed porcelain. Wolframite leaves a reddish brown color on a streak plate. Scheelite makes a white streak, which may be difficult to see.
3.Drip a small amount of diluted hydrochloric acid on the specimen. If it is scheelite, the acid will decompose it into a yellow powder.
4. Wolframite and sheelite each have a Mohs hardness of 4.5, so the nail will leave a mark on either.
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