| It occurs most commonly in the minerals columbite, tantalite, and microlite. |
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| It is most abundant in the coarse-grained facies and is often associated with triphylite, columbite, and sphalerite. |
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| The younger granites form rugged hills of Jurassic age, and contain tinstone and columbite. |
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| Beryl, columbite, and triphylite are common accessory minerals in the Estes pegmatite, especially in the coarse-grained layers. |
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| In older Glossaries there were listings following both columbite and tantalite that referred the reader to ferrocolumbite, magnocolumbite, manganocolumbite, and so on. |
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| These minerals are columbite, microlite, futile, thorite, and zircon. |
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| The samples were also studied petrographically, and identified as sovites and beforsites containing pyrochlore and columbite. |
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| The minerals identified included bastnaesite, yttrofluorite, yttrocerite, columbite, changbaiite, and kasolite. |
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| Enrichment of scandium also occurs in aluminum phosphate minerals, beryl, cassiterite, columbite, garnet, muscovite, rare-earth minerals, and wolframite. |
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| This residue is largely comprised of zircon and columbite along with any silicate gangue minerals that have not broken down during the acid bake process. |
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