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December 20, 2013 Marimaca Copper Corp. (“Coro” or the “Company”) (TSX Symbol: COP) is pleased to announce that it has closed the first tranche of its previously announced non-brokered private placement of up to 22,500,000 units (“Units”) at a price of $0.10 per Unit to raise gross proceeds of up to $2,250,000 (the “Private Placement”).

10,873,246 Units were issued in the first tranche for gross proceeds of the Company of approximately $1,087,325. Each Unit is comprised of one common share of the Company and one half of a common share purchase warrant (each whole warrant, a “Warrant”). Each Warrant will entitle the holder to acquire an additional common share of the Company at an exercise price of $0.15 for a period until December 20, 2016. The Warrants will be subject to a forced exercise provision after one year in the event the volume weighted average trading price of the Company’s common shares on the Toronto Stock Exchange is equal to or above $0.30 for 20 consecutive trading days.

Cash finder’s fees of 6% of the proceeds were paid on a portion of the Private Placement. The net proceeds of the Private Placement will be used to complete a diamond drill program at the Company’s El Desesperado Property and for general working capital purposes. All securities issued pursuant to the Private Placement are subject to a statutory hold period of four months and one day from the date of issuance.

The Company anticipates closing the second tranche of the Private Placement in January 2014.

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 advanced Berta copper leach project and the Payen, El Desesperado, Llancahue, and Celeste copper exploration properties, all located in Chile, and the advanced San Jorge copper-gold project, located 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]

Forward Looking Statements
Certain statements contained in this press release constitute forward-looking information within the meaning of applicable securities laws. These forward looking statements relate to future events or the Company’s future performance, business prospects or opportunities including, without limitation, statements relating to the completion of the second tranche of the Private Placement and the use of the net proceeds of the Private Placement. The Company believes that the expectations reflected in such forward looking information are reasonable, but no assurance can be given that these expectations will prove to be correct and such forward-looking information should not be unduly relied upon. These statements speak only as of the date of this press release. Forward looking information involves risks and uncertainties which may cause actual results to be materially different from those expressed or implied by such forward looking information. Such risk and uncertainties relate to, among other thing, completion of all conditions to the second tranche of the Private Placement, the ability to complete the second tranche of the Private Placement and management’s discretion to reallocate the net proceeds of the Private Placement. The Company does not intend, and does not assume any obligation, to update any forward-looking information except as required by law.