wolframite वाक्य
उदाहरण वाक्य
मोबाइल
- Wolframite is found in quartz veins and pegmatites associated with intrusives.
- In 1860 a rich body of ore containing wolframite was discovered.
- I want a ball of copper, I want a lump of wolframite.
- Along with scheelite, the wolframite series are the most important tungsten ore minerals.
- Its important ores include wolframite and scheelite.
- Pharmacosiderite, Cassiterite and Wolframite of specimen quality have also been recovered from the mine.
- He first had the idea that wolframite might contain a previously undiscovered element ( tungsten ).
- The veins commonly contain tourmaline, topaz, fluorite, apatite, wolframite, molybdenite, and arsenopyrite.
- In 1783, Jos?and Fausto Elhuyar found an acid made from wolframite that was identical to tungstic acid.
- "' Ferberite "'is the iron endmember of the manganese-iron wolframite solid solution series.
- Valuable mineral components often occurring with black sands are monazite, rutile, zircon, chromite, wolframite, and cassiterite.
- Preclusive purchasing was used by the British during World War II in order to deny Nazi Germany access to Spanish Wolframite.
- Wolframite is considered to be a conflict mineral due to the unethical mining practices observed in the Democratic Republic of the Congo.
- Removal of wolframite and other paramagnetic minerals leaves a coarse and a fine non-magnetic stream rich in tin and silicates.
- Historians believe Germany bought shipments of wolframite and tungsten for its war machine from Spain and Portugal and paid for it in gold.
- Wolframite, like hematite, is paramagnetic and without this reduction step separation of hematite and wolframite would be impossible using magnetic separators.
- Wolframite, like hematite, is paramagnetic and without this reduction step separation of hematite and wolframite would be impossible using magnetic separators.
- Some of the most important wolframite mines in the world ( a mineral source for the element tungsten ) are explored within its municipal limits.
- Minerals mined include cassiterite, wolframite, gold, and coltan, which is used in the manufacture of electronic and communication devices such as mobile phones.
- 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.
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