B1idiommoneyIELTS-friendly
a gold mine
USUK
a business or thing that makes a lot of money, or a rich source of something
Also written 'goldmine'. 'A gold mine of information/ideas' means a very useful source. The image is the same as Vietnamese 'mỏ vàng'.
In context
That little bánh mì stall near the station is a real gold mine.
For history students, the old newspaper archive is a gold mine of information.
More idioms about money
- a false economya way of saving money that ends up costing more later
- a golden handshakea large sum of money paid to someone when they leave a job
- a money pitsomething, often a house or car, that costs you much more money than it is worth
- a nest eggan amount of money saved over time for the future, such as retirement
- a penny saved is a penny earnedsaving money is as useful as earning it