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Rock Doc

Keeping warm with gold fever

By DR. E. KIRSTEN PETERS

I own a couple of small gold nuggets. They came from the Round Mountain gold mine in Nevada, which I visited a few years ago. A tour of the open-pit mine was crowned by a visit to their foundry where the molten metal was poured into gold bars. Those bars are what’s called doré gold; that is, it’s the metal as it comes out of the ground with minor impurities in it like silver. The doré bars are then transported to a refinery where pure gold can be separated from other metals. I got to heft one of the doré bars, and I can attest that gold is, indeed, remarkably dense.

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