GEOLOGY

EARTH SCIENCE

MINERALOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Chemical formula of wolframite
A
(Fe, Mn)WO3
B
(Fe, Mn)WO
C
(Fe, Mn)WO4
D
(Fe, Mn)WO2
Explanation: 

Detailed explanation-1: -Wolframite is an iron, manganese, and tungstate mineral with a chemical formula of (Fe, Mn)WO 4 that is the intermediate mineral between ferberite ( Fe2+ rich) and hübnerite ( Mn2+ rich). Along with scheelite, the wolframite series are the most important tungsten ore minerals.

Detailed explanation-2: -Wolframite is the principal and primary ore mineral of tungsten, and commonly associated with the tin ore in and around granite country rocks. Wolframite is an iron manganese tungsten oxide (Fe.Mn)WO4 mineral.

Detailed explanation-3: -The name wolfram comes from the mineral the element was discovered in, wolframite. Wolframite means “the devourer of tin, ” which is appropriate since the mineral interferes with the smelting of tin.

Detailed explanation-4: -The most common tungsten mineral present is wolframite or ferberite, locally accompanied by scheelite and minerals of molybdenum, tin, bismuth, copper, arsenic, zinc, lead and antimony.

Detailed explanation-5: -The wolframite-group minerals occur mainly in veins, usually associated with cassiterite, and in quartz and pegmatite veins of hydrothermal origin genetically related to granitic intrusive rocks. A common occurrence is where such veins traverse metamorphosed sediments in the form of phyllites and schists.

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