Noun
a mine where gold ore is found
a good source of something that is desired
Source: WordNetgold-mine
Things are going to go wrong, and I think we are false to life if we don't portray it. But there is also the hope that some lucky clown is going to come along and stumble into the gold mine. And I think you are also entitled to hold out that hope. James A. Michener
There is, of course, a gold mine or a buried treasure on every mortgaged homestead. Whether the farmer ever digs for it or not, it is there, haunting his daydreams when the burden of debt is most unbearable. Fawn M. Brodie
Intimate relationships are a gold mine for literature to explore, to understand, to describe. A. B. Yehoshua
We must get into the picture business. This is a new industry and a gold mine. it looks like another telephone industry. Joseph P. Kennedy
I own a mortgage company and a real estate company funded by the music. Florida is a kinda gold mine. Vanilla Ice
Death Valley Scotty, whose real name was Walter Scott, was a gold miner who pretended to be owner of "his castle", which he claimed to have built with profits from his gold mine. Source: Internet