Platinum, palladium and copper close substantially ower on day

San Francisco (Apr 28)  July platinum   fell $4.60, or 0.3%, to $1,419.70 an ounce, while June palladium  shed $10.50, or 1.3%, to $800.70 an ounce.

High-grade copper for May delivery  closed down 1.5 cents, or 0.5%, at $3.11 a pound. July copper, which is now the most-active contract, ended flat at $3.09 an ounce.

Metals miners traded mostly lower Monday, with Newmont Mining shares dropping 5.9% and Barrick Gold shares falling 3.1%. Barrick said it was Newmont’s decision to terminate merger talks.

The Philadelphia Gold and Silver Index /quotes/zigman/1475600/realtime XAU -1.66%  and the NYSE Arca Gold Bugs Index  each declined by 2.1%. The SPDR Gold Trust  fell 0.3%