By Ted Bunker Jan. 21 (Bloomberg) -- Copper prices fell in New York, erasing an earlier gain, as the rising dollar curbed demand for the metal as a hedge against inflation. Copper futures for March delivery dropped 3.65 cents, or 1.1 percent, to $3.3185 a pound at 10:55 a.m. on the New York Mercantile Exchange’s Comex unit, after climbing as much as 1.5 percent. The dollar rose as much as 0.6 percent against a basket of six major currencies.

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