mine of information

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mine of information

Someone or something that contains a lot of knowledge about a particular topic. You should ask Amanda for advice about your cake recipe—she's a mine of information about baking.
See also: information, mine, of

mine of information

Fig. someone or something that is full of information. Grandfather is a mine of information about World War II. The new search engine is a positive mine of useful information.
See also: information, mine, of