Valuable mineral components often occurring with black sands are monazite, rutile, zircon, chromite, wolframite, and cassiterite.
12.
Preclusive purchasing was used by the British during World War II in order to deny Nazi Germany access to Spanish Wolframite.
13.
Wolframite is considered to be a conflict mineral due to the unethical mining practices observed in the Democratic Republic of the Congo.
14.
Removal of wolframite and other paramagnetic minerals leaves a coarse and a fine non-magnetic stream rich in tin and silicates.
15.
Historians believe Germany bought shipments of wolframite and tungsten for its war machine from Spain and Portugal and paid for it in gold.
16.
Wolframite, like hematite, is paramagnetic and without this reduction step separation of hematite and wolframite would be impossible using magnetic separators.
17.
Wolframite, like hematite, is paramagnetic and without this reduction step separation of hematite and wolframite would be impossible using magnetic separators.
18.
Some of the most important wolframite mines in the world ( a mineral source for the element tungsten ) are explored within its municipal limits.
19.
Minerals mined include cassiterite, wolframite, gold, and coltan, which is used in the manufacture of electronic and communication devices such as mobile phones.
20.
Ferberite and h�bnerite often contain both divalent cations of iron and manganese, with wolframite as the intermediate species for which the solid solution series is named.
