Lackluster “Gold” centers on a showboat-y performance

The experience of gold is hard to put into words, according to a character in a new film by that name: “The taste of it on your tongue, the feel of it on your fingers —  it’s like a drug. It’s electric,” says Mike Acosta (Edgar Ramirez), a geologist who, with his prospecting partner Kenny Wells (Matthew McConaughey), has just announced the discovery of a mother lode of the precious metal in a remote Indonesian jungle.
The experience of “Gold” &mdash