gold mine Synonyms

goldmine mine of wealth eldorado coal mine cash crop money-spinner cash cow moneymaker mother lode big bucks crock of gold Golconda source of steady profit cash reserve abundant source rich lode mines gravy train goldfield gold field golden goose jackpot means quarry placer mine lode fund el dorado cornucopia colliery capital repository reserve wellspring wealth vein treasury treasure supply storehouse store stock bonanza