Wolframite Group: Mineral information, data and localities.

Note: "Wolframite" usually has a chemical composition covering the range between Hübnerite and Ferberite. Rarely, "wolframite" could also correspond to

Focus areas for data acquisition for potential domestic resources of 11 critical minerals in Alaska—Aluminum, cobalt, graphite, lithium, niobium, platinum group elements, rare earth elements, tantalum, tin, titanium, and tungsten, chap. C

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Wolframite mineral information and data

Wolframite mineral information and data

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Scheelite: Mineral information, data and localities.

Minerals, Free Full-Text

PDF] Focus areas for data acquisition for potential domestic resources of 11 critical minerals in the conterminous United States, Hawaii, and Puerto Rico—Aluminum, cobalt, graphite, lithium, niobium, platinum-group elements, rare earth elements

Wolframite Group: Mineral information, data and localities.

Niobium - Wikipedia

Wolframite mineral information and data