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Gold, oil futures down on dollar strength

SAN FRANCISCO (MarketWatch) -- Gold and crude oil futures fell Tuesday with strength in the U.S. dollar helping to dull demand for the commodities as traders eyed negotiations over Greece's debt crisis. Gold for February delivery GC2G -0.82% lost $14.40, or 0.9%, at $1,663.90 an ounce on the Comex division of the New York Mercantile Exchange, pulling back after gains over the last two sessions. March crude oil CL2H -0.97% traded at $98.57 a barrel on Nymex, down $1.01, or 1%. The dollar index DXY +0.42% traded at 80.106, up from 79.777 late Monday.