February 18 2014, Marimaca Copper Corp. (“Coro” or the “Company”) (TSX Symbol: COP) has agreed a three month extension to the option agreement with the property owners of the El Desesperado project, at a cost of US$20,000 per month. Marimaca Copperhas recently completed a 5 hole, 1191m diamond drilling program and a 7 hole, 950m reverse circulation drilling program and assay results for the program will be released in due course. As a result of greater geological complexity than anticipated, combined with the diamond drilling difficulties that necessitated completion of the program with an RC rig, the Company had not generated sufficient information to justify making the US$650,000 option payment due on February 17, 2014.

Alan Stephens, FIMMM, President and CEO, of Marimaca Copper Corp, a geologist with more than 38 years of experience, and a Qualified Person for the purposes of NI 43-101, is responsible for the contents of this news release.

About El Desesperado:
The El Desesperado copper project, is located 7 km NW of the city of Calama in the II Region of Chile, and immediately west of Codelco’s Toki Cluster deposits.

CORO MINING CORP.

“Alan Stephens”
Alan Stephens
President and CEO

About Marimaca Copper Corp.:
The Company was founded with the goal of building a mining company focused on medium-sized base and precious metals deposits in Latin America. The Company intends to achieve this through the exploration for, and acquisition of, projects that can be developed and placed into production. Coro’s properties include the Berta, El Desesperado, and Payen copper properties located in Chile and the advanced San Jorge copper-gold project, in Argentina.

For further information please visit the Company’s website at www.coromining.com or contact Michael Philpot, Executive Vice-President at (604) 682 5546 or [email protected]

This news release includes certain “forward-looking statements” under applicable Canadian securities legislation. Such forward-looking statements or information, including but not limited to those with respect to potential mineralization and geological comparisons involve known and unknown risks, uncertainties, and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements or information. Such factors include, among others, the actual prices of copper, the factual results of current exploration, development and mining activities, changes in project parameters as plans continue to be evaluated, as well as those factors disclosed in the Company’s documents filed from time to time with the securities regulators in the Provinces of British Columbia, Alberta, Saskatchewan, Manitoba, Ontario, New Brunswick, Nova Scotia, Prince Edward Island and Newfoundland and Labrador.