English version

a mine of information (about/on something)

From Longman Dictionary of Contemporary Englisha mine of information (about/on something)a mine of information (about/on something)KNOW somethingsomeone or something that can give you a lot of information about a particular subject and that is therefore very useful or helpful The website is a mine of information about all forms of cancer. mine
Examples from the Corpus
a mine of information (about/on something)Study a local map and the Ordnance Survey, which is a mine of information.A trip to Brussels to meet the responsible officials can turn up a mine of information.If used properly, the diary was a mine of information.His column in the Angling Times was the first thing that I turned to and what a mine of information.
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