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Mirasol Resources Ltd.

Publié le 10 décembre 2014

Mirasol advances the Atlas gold-silver project in Northern Chile with new trench sampling and geophysical interpretation

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Mirasol advances the Atlas gold-silver project in Northern Chile with new trench sampling and geophysical interpretation

December 10, 2014

Mirasol advances the Atlas gold-silver project in Northern Chile with new trench sampling and geophysical interpretation

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VANCOUVER, BC, December 10, 2014 - Mirasol Resources Ltd. (TSX-V: MRZ, Frankfurt: M8R)

  • Detailed mapping and sampling of Trench TR-AKI-06 and the surrounding outcrops have outlined controls on silver-dominated mineralization, and highlighted prospective drill targets for large scale anomalies at the Atlas Silver Zone (ASZ) and new Oculto zone.
  • The combination of geology and IP geophysical anomalies at ASZ suggests mineralization in TR-AKI-06 is associated with the edge of a large, covered, conductive feature that may represent a buried and altered volcanic vent or breccia body.
  • The IP also outlines a long, greater than 1 km, shallowly-buried, high-intensity resistivity feature, the Oculto zone target. Resistivity anomalies of this magnitude can be related to hydrothermal silica accumulations, possibly associated with precious metal mineralization.
  • Recent vertical channel sampling of the walls in TR-AKI-06 have returned high-grade silver and anomalous gold associated with silica replacement in tuffs and mineralized hydrothermal breccia bodies.
  • The best individual channel samples of the trench walls include 0.35 m at 609 g/t Ag, and 0.2 m at 542 g/t Ag, with the best length-weighted average vertical channel samples of 2 m at 114.69 g/t Ag and 0.20 g/t Au, and 1.9 m at 128.03 g/t Ag and 0.32 g/t Au.
Mirasol has completed surface mapping and detailed channel re-sampling of trench TR-AKI-06 at its ASZ prospect in the 100% owned Atlas Project in the Gorbea belt of northern Chile. Integrated interpretation of assay results and new geological information with IP electrical geophysics has further upgraded the ASZ prospect by defining a series of priority targets for drill testing.

At ASZ, previously reported rock chip float and subcrop assays outline a 750 m long zone of altered tuffs and hydrothermal breccias containing up to 639.0 g/t Ag with low level, anomalous gold (Figure 1, and see news releases of February 26, 2014 and July 18, 2014). This mineralized trend is surrounded by widespread post-mineral alluvial cover, suggesting there is potential for extensions of ASZ mineralization beneath cover.

Re-sampling and mapping of trench TR-AKI-06 was conducted to better understand geological controls on silver mineralization. Vertical channel samples were collected down the walls of the trench at regular intervals along the trench to augment the original continuous horizontal sampling of the trench floor.

The better length-weighted average composite channel samples from new vertical sampling of the trench walls include (Figure 2 and Table 1):
  • 2.0 m at 144.69 g/t Ag and 0.20 g/t Au,
  • 1.9 m at 122.59 g/t Ag and 0.18 g/t Au
  • 1.9 m at 128.03 g/t Ag and 0.32 g/t Au
Higher-grade individual channel samples have assayed up to;
  • 0.35 m at 609 g/t Ag and 0.002 g/t Au
  • 0.2 m at 542 g/t Ag and 0.13 g/t Au
  • 0.7m at 261 g/t Ag and 0.31 g/t Au
  • 0.5m at 251 g/t Ag and 0.06 g/t Au
  • 0.6 m at 220 g/t Ag and 0.07 g/t Au
Combined, these channel results define a 55 to 60 m long section of continuous mineralization at the north east end of the trench that is interpreted as a volcanic vent, with overprinting hydrothermal breccias. The better silver (±gold) assays in the trench correlate to silicification of tuffs and multiphase "funnel" shaped hydrothermal breccia bodies. Select samples of silicified tuffs with fine dark sulphide have returned assays of up to 519 g/t silver (Photo 1D). The breccias contain strongly silicified clasts of mineralization, and locally also contain fine sulphides. Selective sampling of these breccia clasts has returned assays of up to 148 g/t Ag, while channel sampling through the breccia has returned individual channel samples of up to 0.2 m at 542 g/t Ag (Photos 1E and 1F). The alteration and mineralization continue to the edge of alluvial cover in the trench suggesting that this mineralization may be open to the north east under cover.

Trench TR-AKI-06 shows pervasive intense low-temperature, advanced argillic alteration containing cinnabar and veins of native sulphur (Photos 1B & 1C). This alteration type is typical of the upper level of high-sulphidation epithermal precious metal systems (the "steam heated zone"), suggesting there is potential for the preservation of the precious metal mineralization at depth. The silicified clasts in the breccia are fragments of mineralization interpreted to have been transported to surface by the breccia forming event. This suggests a source for silver mineralization in the clasts may be located at depth beneath, or laterally adjacent to, the trench.

Examination of the IP electrical geophysics interpretive cross section that traverses trench TR-AKI-06 (Figure 1) shows that ASZ is situated on the edge of a large "funnel shaped" conductive anomaly up to 400 m wide, which is centred out beyond the North Eastern end of the trench under alluvial cover. This conductive feature correlates with an area characterized by a weak chargeable anomaly. Interpreting this anomaly in the light of the trench geology and assay results, suggests that the funnel shaped feature may be a clay-altered breccia pipe or volcanic vent. The mineralization in Trench TR-AKI-06 may be geochemical leakage from a mineral system associated with this geophysical anomaly, representing a target for drill testing. Also evident in the geophysics is a large, strong resistivity anomaly (up to 10,000 ohm/m) that is centred 500 m north of the conductive target. This anomaly, named the Oculto zone, is seen on a number of geophysical sections, outlining a 1 km long resistive feature. The Oculto anomaly is largely gravel covered; however localised outcrop windows through the gravel cover reveal intense quartz-alunite altered volcanics. Resistivity anomalies of this magnitude can be related to hydrothermal silica accumulations potentially associated with precious metal mineralization in high sulphidation epithermal systems. The Oculto zone is considered to be a priority drill target.

The new drill targets outlined at the ASZ and Oculto prospects further upgrade the prospectivity of the Atlas gold-silver project. Other compelling drill targets at Atlas have been previously been announced by Mirasol at the Atlas Gold Zone prospect. Additional early stage prospects at Atlas offer the potential to develop further drill targets at this large 100% Mirasol owned project in the world class Miocene mineral belt of Chile. Mirasol is seeking a Joint Venture partner to drill test and further advance the Atlas project.

Stephen Nano, President and CEO is the Qualified Person under NI 43-101 who has prepared and approves the technical content of this news release.

For further information, contact:

Stephen Nano
President and CEO
Tel: 604 602 9989
Email:[email protected]
Website:www.mirasolresources.com

Quality Assurance/Quality Control:
Exploration at the Atlas Project is supervised by Stephen C. Nano, who is the Qualified Person under NI 43-101 Timothy Heenan, Exploration Manager and Leandro Echavarria Principal Geologist. All technical information for the Company's projects is obtained and reported under a formal quality assurance and quality control (QA/QC) program. All drill, rock chip and stream sediment samples are collected under the supervision of Company geologists in accordance with standard industry practice. Samples are dispatched via transport to an ISO 9001:2000-accredited laboratory in Chile for analysis. All drill, and rock chip samples are submitted to the Laboratory with independently sourced, accredited standards and blanks and where appropriate duplicate samples to facilitate monitoring of laboratory performance. Certified Results are examined by an independent qualified consultant to ensure laboratory performance meets required standards.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.



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Mirasol Resources Ltd.

EN DÉVELOPPEMENT
CODE : MRZ.V
ISIN : CA6046801081
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Mirasol Res. est une société d’exploration minière d'or et d'argent basée au Canada.

Mirasol Res. détient divers projets d'exploration en Argentine.

Son principal projet en développement est JOAQUIN en Argentine et ses principaux projets en exploration sont SASCHA, ESPEJO, CLAUDIA, NICO et SANTA RITA SILVER en Argentine.

Mirasol Res. est cotée au Canada, aux Etats-Unis D'Amerique et en Allemagne. Sa capitalisation boursière aujourd'hui est 26,0 millions CA$ (19,0 millions US$, 17,8 millions €).

La valeur de son action a atteint son plus bas niveau récent le 24 octobre 2008 à 0,04 CA$, et son plus haut niveau récent le 11 mars 2011 à 7,94 CA$.

Mirasol Res. possède 49 120 000 actions en circulation.

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