be sitting on a gold mine

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be sitting on a gold mine

To have immediate access to a plentiful amount of something valuable or desirable, especially something that one has not yet profited from. Who knew that my grandfather was sitting on a gold mine of priceless antiques all these years? If your social networking site is attracting millions of new users every month, then you guys are definitely sitting on a gold mine.
See also: gold, mine, on, sitting
References in periodicals archive ?
THE TYPICAL AMERICAN medical practice is sitting on a gold mine. And Elisabeth Hager, MD, MMM, CPE, believes doctors can save themselves, their patients and even the medical profession if they'd only learn to mine the gold.