lode

English Thesaurus

1. a deposit of valuable ore occurring within definite boundaries separating it from surrounding rocks (noun.phenomenon)

hypernym	:	alluviation, deposit, sedimentation,
definition	:	the phenomenon of sediment or gravel accumulating (noun.phenomenon)

hyponym	:	champion lode, mother lode,
definition	:	the main vein of ore in a deposit (noun.phenomenon)