Tags: Chemical Substance, Mineral.
Ferberite is the iron endmember of the manganese – iron wolframite solid solution series. The manganese endmember is hübnerite. Ferberite is a black monoclinic mineral composed of iron(II) tungstate FeWO4.Ferberite and hübnerite often contain both divalent cations of iron and manganese with wolframite as the intermediate species for which the solid solution series is named.Ferberite occurs as granular masses and as slender prismatic crystals.