It is usually mined from scheelite, CaWO4, och wolframite, (Fe,Mn)WO4. Tungsten is released to the environment, e.g. through its use in winter tires and ammunition.
Ito ay karaniwang kinopyang mula scheelite, CaWO4, AT wolframite (Fe, MN) WO4. Tungsten ay inilabas sa kapaligiran, tulad ng sa pamamagitan ng paggamit ng mga gulong taglamig at bala.