columbite Definition

niobite, tantalite, diopside, allanite, leucoxene, wolframite, nepheline, beryl, argentiferous, lutetium, phlogopite, kyanite, muscovite, hornblende, hematitic, monazite, orpiment, pyrites, azurite, praseodymium, sylvite, stibnite, barium sulphate, actinolite, bastnasite, bastnaesite, pyroxene, epidote, barytes, hypogene, pyrophyllite, hypabyssal, alunite, pyrope, plagioclase, carnotite, covellite, corundum, yttrium oxide, realgar, eclogite, amphibole, uraninite, chalcedony, wollastonite, pyrochlore, lateritic, minerals, colluvial, argentite, biotitic, steatite, haematite, siderite, kainite, columbium, cherty, cinnabar, spinel, chloritic, magnesite, lapis, chrysocolla, phosphorite, nephrite, lithium oxide, metalliferous, feldspathic, tetrahedrite, ferruginous, dacitic, pegmatitic, scheelite, halite, arenite, sericite, anorthosite, phosphatic, semiprecious, argillaceous, cuprite, detrital, spodumene, micaceous, amosite, greywacke, greisen, ilmenite, lanthanides, iron pyrites, calcic, bisie, lepidolite, ferrochromium, feldspar, pyrargyrite, electrum, siliceous, holmium, ferromanganese,