Gold futures closed lower on the Comex division of the New York Mercantile Exchange, dropping $19.30 or 1.12 percent to $1,698.60 per troy ounce. Traders went for profits Thursday after the U.S. Federal Reserve announced they would extend asset purchases into 2013. Silver for March delivery was down 1.48 percent, or $1.18, to $32.61 an ounce. The euro rose to $1.3075 from Wednesday\'s $1.3074. The dollar rose to 83.66 yen from 83.27 yen. The Australian dollar fell to $1.0521 from $1.0554. The U.S. dollar dropped to 0.9844 Canadian from 0.9845 Canadian. The British pound fell to $1.6112 from $1.6149.