COEUR d'ALENE - RockStar Resources Inc. is having a busy week.

Earlier this week, RockStar, former Coeur d'Alene Mines CEO Dennis E. Wheeler's startup mining company, announced it was acquiring a Canadian company's Oregon mine property for $35 million.

Thursday, RockStar announced it signed an agreement to work exclusively with Coeur d'Alene-based Timberline Resources Corp. RockStar agreed to purchase a total of $750,000 of Timberline's common stock, giving it 3.75 million shares.

The exclusive agreement brings the two together to look for ways to enhance the value of Timberline's gold properties and explore mutually beneficial transactions, according to statements released by the companies.

Timberline, an advanced stage exploration company, has seven projects in Nevada, Idaho and Montana.

Timberline's exploration is primarily focused on the major gold districts of Nevada, where it is advancing its flagship Lookout Mountain Project toward a production decision. The wholly-owned Lookout project consists of 378 contiguous claims on 23 square miles near Eureka, Nev., a historic mining district.

Timberline also has the Iron Butte Project in Nevada, with 569,000 ounces of reported gold resource and 10 million ounces of silver resource. It also has a 50 percent interest in the Butte Highlands Joint Venture in Montana, with an estimated resource of between 200,000 and 250,000 ounces of gold, with production there targeted for next year.

Wheeler said Timberline's properties provide "significant upside to further gold resource development."

"We look forward to working with an experienced, respected group of technical professionals to explore ideas for advancing our projects," said Paul Dircksen, Timberline's president and CEO. "The financing commitment included with this agreement provides Timberline with additional operating cash in a very difficult market environment."