Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
mĕtallĭfer, fĕra, fĕrum, adj. [metallum-fero], yielding or abounding in metal, metalliferous (poet.): terra, Sil. 15, 500: Luna, Stat. S. 4, 4, 23.