Coro Mining Corp.
TSX : COP

Coro Mining Corp.

July 31, 2012 09:30 ET

Coro Reports Remaining Results From Second Phase Drilling Program at Berta Copper Project and Announces Initiation of Resource Drilling and Metallurgical Sampling

VANCOUVER, BRITISH COLUMBIA--(Marketwire - July 31, 2012) - Coro Mining Corp. ("Coro" or the "Company") (TSX:COP) is pleased to announce the remaining results from the recently completed Phase II, 32 hole (10,520m) reverse circulation drilling program at its Berta property, located approximately 20km west of the PanAust/Codelco owned Inca de Oro feasibility stage project and 30km southeast of Anglo American's Manto Verde copper heap leach mine, in the III Region of Chile. Initial assay results from 20 of these holes were released on June 13th 2012. The latest results are shown on Table 1 below, including additional results from hole BR-41, which was extended after bottoming in mineralization. Coro announced the terms for the 100% acquisition of Berta in its news release of June 13th 2011, and results from its Phase I drilling in its news release of September 27th 2011.

Alan Stephens, President and CEO of Coro commented, "Our objective at Berta is to define a relatively modest sized oxide deposit that can be placed into production quickly and cheaply, and thus generate cash flow for our Chilean exploration program. The reported results are mainly from the lower grade, southwest extension of the Berta Sur area. An infill grid drilling reverse circulation drilling program on 50m centers is in progress, in order to produce an NI43-101 compliant resource estimate for the higher grade oxide material at Berta Sur and Berta Central. Sampling of diamond drill core and surface trenches is underway to provide material for a preliminary metallurgical column test work program."

Table 1: Significant intersections
Hole from to m %CuT %Mo %CuEq Type Area
BR-41 0 40 40 0.35 0.003 0.36 Oxide Norte
and 228 314 86 0.40 0.032 0.52 Sulphide Norte
BR-46 0 48 48 0.28 0.002 0.29 Oxide Sur
and 68 92 24 0.20 0.007 0.22 Mixed Sur
BR-47 14 36 22 0.20 0.001 0.20 Oxide Sur
BR-48 32 102 70 0.27 0.005 0.29 Oxide Sur
and 118 148 30 0.20 0.005 0.21 Oxide
BR-50 20 66 46 0.21 0.003 0.22 Oxide Sur
BR-54 8 18 10 0.23 0.006 0.26 Oxide Sur
and 30 40 10 0.32 0.010 0.36 Oxide Sur
and 50 62 12 0.24 0.003 0.25 Mixed Sur
BR-56 36 46 10 0.38 0.003 0.39 Oxide Sur

No significant intersections were received from holes BR-40, BR-49, BR-51 to BR-53 and BR-55. All drill hole locations are shown on the attached map and table. Copper equivalents were calculated at $3.00/lb Cu and $12/lb Mo, with no adjustment for metallurgical recoveries. In particular, no molybdenum would be recovered from the envisaged oxide operation.

About Berta

Mineralization, as defined by drilling, mapping and grid geochemistry, occurs in three principal areas; Berta Sur, Central and Norte, and is associated with sub-vertical, elongate potassically altered porphyry intrusive bodies and related hydrothermal and intrusive breccias, emplaced into a tonalite stock. At Berta Sur, this mineralization is present within an area of approximately 500m by 300m, oriented ENE, with oxidation extending from surface to depths of 50m in the east to greater than 150m in the west. Berta Central comprises a smaller body, sub-parallel to and located immediately north of, Berta Sur and was the focus for previous artisanal mining. Berta Norte comprises several, discreet, NW oriented zones of mineralization, individually 25-85m in width and 100-250m in strike length, partially gravel covered, and mostly intersected at depth as sulphides in this phase of drilling. Copper and molybdenum mineralization broadly occur together at Berta although copper can occur without molybdenum and vice versa.

Berta has previously been explored by two major mining companies in the 1990's who completed wide spaced shallow percussion drilling (48 holes, 1,090m), reverse circulation ("RC") drilling (49 holes, 6,033m), and bulldozer trenching. More recently, Grandcru Resources Corp, completed diamond drilling (9 holes, 3,311.4m) in 2006-2007. All of the previous holes were assayed for total copper (%CuT), and the oxide sections of 42 of the RC holes were assayed for acid soluble copper. With the exception of 42 of these RC holes, all holes were assayed for molybdenum. Coro completed a 24 hole, 4360m RC program in 2011.

All Coro RC holes were sampled on a 2 m continuous basis, with samples riffle split on site and one quarter sent to the Andes Analytical Assaying laboratory in Copiapo for preparation and then to their assay laboratory in Santiago. A second quarter was stored on site for reference. Samples were transported to the laboratory by Andes Analytical Assaying under the supervision of Minera Coro Chile Ltda's contractor, Geominco, who also logged the drill cuttings. Samples were prepared using the following standard protocol: drying, crushing to better than 80% passing -10#, homogenizing, splitting and pulverizing a 400 g subsample to 95% passing -150#. All holes were assayed for CuT and Mo, with intersections containing greater than 0.1% CuT also assayed for CuS and Au. A full QA/QC program, involving insertion of appropriate blanks, standards and duplicates was employed with acceptable results.

Sergio Rivera, Vice President of Exploration, Coro Mining Corp., a geologist with more than 30 years of experience and a member of the Colegio de Geologos de Chile and of the Instituto de Ingenieros de Minas de Chile, was responsible for the design and execution of the drilling program and is the Qualified Person for the purposes of NI 43-101.

To view Figure 1, click on the following link: http://media3.marketwire.com/docs/c730m1.pdf

Table 2: UTM Collar coordinates for Coro Phase II RC holes.
Hole East North Elevation Azimuth Dip TD
BR-25 394931 7044481 1725 160 -60 400
BR-26 394902 7045679 1677 230 -60 400
BR-27 394722 7045538 1688 230 -60 300
BR-28 394800 7045344 1660 230 -60 300
BR-29 394973 7045481 1667 230 -60 250
BR-30 395129 7045604 1659 230 -60 400
BR-31 394863 7045199 1687 230 -60 290
BR-32 395126 7045347 1682 230 -60 400
BR-33 395254 7045478 1678 230 -60 400
BR-34 395366 7045281 1707 230 -60 374
BR-35 394961 7044991 1696 230 -60 368
BR-36 394974 7045030 1695 50 -60 400
BR-37 395160 7044915 1728 50 -60 400
BR-38 395260 7045200 1704 230 -60 400
BR-39 394658 7044913 1711 160 -60 288
BR-40 394734 7044666 1706 160 -60 336
BR-41 395181 7044816 1716 160 -60 400
BR-42 395041 7044336 1741 160 -60 400
BR-43 395067 7044265 1755 160 -60 300
BR-44 394896 7044430 1733 160 -60 300
BR-45 394965 7044243 1755 160 -60 300
BR-46 394965 7044243 1755 340 -60 200
BR-47 394884 7044164 1757 160 -60 300
BR-48 394819 7044214 1751 160 -60 300
BR-49 394864 7044230 1753 160 -60 300
BR-50 394745 7044128 1756 160 -60 250
BR-51 394650 7044090 1745 160 -60 250
BR-52 394600 7044500 1737 270 -60 400
BR-53 394420 7044020 1714 160 -60 216
BR-54 395098 7044324 1744 160 -60 300
BR-55 394688 7043998 1747 160 -60 300
BR-56 394780 7044032 1755 160 -60 298

CORO MINING CORP.

Alan Stephens, President and CEO

About Coro Mining 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 San Jorge copper-gold project, in Argentina, and the Berta, El Desesperado, Chacay, Llancahue, and Celeste copper exploration properties located in Chile.

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 the prices of copper and molybdenum, metallurgical results and resources, 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.

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