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Wolframite
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<p>Wolframite is an <a href="/facts/Iron/DkICCKIC">iron</a>, <a href="/facts/Manganese/j9ELd1TL">manganese</a>, and <a href="/facts/Tungstate/ek9P92Tz">tungstate</a> <a href="/facts/Mineral/LkUFbNmv">mineral</a> with a chemical formula of (Fe,Mn)WO4 that is the intermediate mineral between <a href="/facts/Ferberite/CYzJrlTu">ferberite</a> (Fe2+ rich) and <a href="/facts/H%25C3%25BCbnerite/UXxEfBJh">hübnerite</a> (Mn2+ rich). Along with <a href="/facts/Scheelite/Te4N0qKN">scheelite</a>, the wolframite series are the most important <a href="/facts/Tungsten/WYwbNDYX">tungsten</a> ore minerals. Wolframite is found in <a href="/facts/Quartz/4n86tE2G">quartz</a> veins and <a href="/facts/Pegmatite/qW5BUXPg">pegmatites</a> associated with <a href="/facts/Granite/G2evuVKo">granitic</a> <a href="/facts/Intrusive_rock/Wl6xaY1a">intrusives</a>. Associated minerals include <a href="/facts/Cassiterite/d4hzR7LB">cassiterite</a>, scheelite, <a href="/facts/Bismuth/75FLjkoX">bismuth</a>, quartz, <a href="/facts/Pyrite/41CYREyr">pyrite</a>, <a href="/facts/Galena/eSaK62FA">galena</a>, <a href="/facts/Sphalerite/5NumvnzR">sphalerite</a>, and <a href="/facts/Arsenopyrite/xnb3E9yK">arsenopyrite</a>. </p><p>This mineral was historically found in <a href="/facts/Europe/DTAtrKfh">Europe</a> in <a href="/facts/Bohemia/Wbr8gt6l">Bohemia</a>, <a href="/facts/Saxony/PrKscwCP">Saxony</a>, and in the <a href="/facts/UK/kuPAILt2">UK</a> in <a href="/facts/Devon/go3z9lDW">Devon</a> and <a href="/facts/Cornwall/9A3TftFP">Cornwall</a>. China reportedly has the world's largest supply of tungsten ore with about 60%. Other producers are <a href="/facts/Spain/bIyrB8EY">Spain</a>, <a href="/facts/Canada/D5P9yqs6">Canada</a>, <a href="/facts/Portugal/lYzwDQ63">Portugal</a>, <a href="/facts/Russia/jfkCwyxn">Russia</a>, <a href="/facts/Australia/qLHpbppq">Australia</a>, <a href="/facts/Thailand/GCUnN4JK">Thailand</a>, <a href="/facts/South_Korea/pCobAaVw">South Korea</a>, <a href="/facts/Rwanda/UKR5UdKy">Rwanda</a>, <a href="/facts/Bolivia/YNBoDKKR">Bolivia</a>, the <a href="/facts/United_States/P0sCdLe5">United States</a>, and the <a href="/facts/Democratic_Republic_of_the_Congo/E2KmHDdv">Democratic Republic of the Congo</a>. </p>