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TORONTO, CANADA - July 12, 2012 - Mr. Thomas Skimming, CEO of MacMillan Minerals Inc., (TSX-V:MMX) is pleased to announce that the Company has expanded the diamond drilling program at the Las Cucharas Gold and Silver Project in Mexico. Mr. William Hamilton, P. Geo., Manager of Exploration, is a Qualified Person under the meaning of National Instrument 43-101 and is responsible for all technical information contained in this news release.
The Las Cucharas Gold and Silver Project is comprised of 13 titled claims covering 3,643 hectares situated in the northern part of Nayarit State in Mexico. Additional information regarding the Las Cucharas Project is available in a Technical Report dated February 27, 2012 by R.A. Lunceford, M.Sc. CPG, titled "Geological Report and Summary of Field Examination, Las Cucharas Project" as filed on SEDAR on March 29, 2012. The Las Cucharas Project covers a series of generally northwest trending vein structures which mainly occur within a 6 km long by 2 km wide mineralized corridor (see the attached map of the Las Cucharas Project).
The initial diamond drill program originally consisted of three holes which have been completed on the La Raizura Target as news released June 18, 2012. The drill program was then expanded to include two drill holes now completed on the El Molino Target (see June 26, 2012 news release). The drill program has now been expanded to include a drill hole at the La Azurita Target. The drilling is under contract with Alamo Drilling S.A. de C.V. under the supervision of Company geologists.
The La Azurita Target is located approximately 1,050 metres east northeast of the La Raizura Target and 300 metres east of the El Molino Target on the 100% owned and titled El Oro claim. The target zone has been traced on surface and underground over a distance of approximately 100 metres and remains open in both directions. The old workings are described in Mexican Government geological reports as consisting of a tunnel 85 metres long. However, only the first 27 metres are now accessible to the point where a cave-in has occurred. The initial entrance of the tunnel represents a cross-cut designed to intersect the mineralized structure, which was encountered by Company personnel approximately 6 metres before the area of the cave-in. The tunnel varies in width from 1.2 metres near the entrance to 3.45 metres in the area where the cave-in occurred. The target zone is characterized by argillization, with malachite, azurite and pyrite associated with fine-grained, grey quartz veinlets. The veinlets trend 328?/65?-75? SW. The structure is hosted by andesitic and rhyolitic volcanic rocks. On surface, the zone is characterized by two large depressions occurring over a distance of approximately 30 metres, which reflect at surface where the main underground workings have caved-in. Three samples were collected from the 6 metre length of the mineralized zone exposed in the tunnel. One sample reported 0.459 g/t Au, 23.0 g/t Ag, 0.737% Cu over 1.2 metres. A second sample reported 0.638 g/t Au, 50.8 g/t Ag and 0.464% Cu over 1.5 metres. The last sample taken near the caved-in area reported 1.325 g/t Au, 65.2 g/t Ag, 1.7% Cu, 1.64% Pb and 1.34% Zn over 1.5 metres; however, the entire width of the zone could not be sampled. Surface sampling reported best values averaging 1.67 g/t Au, 62.0 g/t Ag and 0.977% Pb over 4.4 metres of sample width. The true width has not yet been determined. A 60 metre long drill hole is being drilled to test the central section of the target zone below the old working. Due to the onset of the rainy season, and faster access from the down-dip side of the target zone, this hole is being drilled perpendicular to the strike, but down-dip on the target zone.
QUALITY ASSURANCE / QUALITY CONTROL
Samples represent continuous chip/channel samples collected across the mineralized area. The samples were shipped to Inspectorate Assay Laboratory, for preparation in Durango, Mexico and analysis in Reno, Nevada. Analyses were carried out for gold (30 gram sample fire assay with an AA finish), as well as a multi-element ICP analytical package. Gold values over 10 grams and silver values over 100 grams were assayed by fire assay with a gravimetric finish. A rigorous quality assurance/quality control program is in place, with standard and blank samples inserted in every batch of 20 samples. Results indicate acceptable precision and lack of inter-sample contamination. The exploration work was carried out under the supervision of William Hamilton, P.Geo, a Qualified Person as defined by National Instrument 43-101.
Mr. Thomas Skimming, CEO of MacMillan states: "We are very pleased to be able to test a third target at the Las Cucharas Gold and Silver Property. We are now in a position to look forward to reporting on six drill holes covering three targets later this summer after all assays have been received and evaluated."
For additional information, contact: Tel: (416) 867-1101 Fax: (416) 867-1222
Email: macmillanminerals@ca.inter.net
Neither the TSX Venture Exchange nor its Regulation Service Provider accepts responsibility for the adequacy or accuracy of this release
Map of Las Cucharas Project (13 titled claims covering 3,643 hectares)
Showing location of the La Raizura, El Molino, and La Azurita Drill Targets
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Section Sketch of Proposed La Azurita Drill Hole
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http://thenewswire.ca/client_files/2012-07-12-2.pdf
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