The idiom 'a gold mine' means that something is a source of wealth, valuable information or resources. This video explains the meaning and use of the idiom 'a gold mine' in English. We explain how to use it with some easy examples to help you learn this idiom so you can use it in spoken and Business English.
Steer away from thinking of this expression in the literal sense, the idiom ‘a gold mine’ is an enterprise, resource or an opportunity that is -