Toronto, Ontario and Vancouver, British Columbia--(Newsfile Corp. - November 15, 2018) - Minera Alamos Inc. (TSXV:
MAI) (the "Company" or "Minera Alamos") is pleased to report that additional mapping and surface sampling of the new Divisadero porphyry discovery has successfully delineated a significant surface exposure of the target which remains open in all directions. To date, a combination of outcrop and limited outcrop/float samples have confirmed the expression of the known porphyry system for over 300 m before it disappears under soil cover (see figure 1).
This work was conducted following the recent success of Phase 1 drill hole S18-121 that intersected a broad zone of a porphyry hosting significant gold, silver and copper mineralization approximately 200 m north of the Nicho Norte breccia pipe. The hole was the first drilled into this new style of polymetallic mineralization that is associated with an andesite porphyry unit related to disseminated pyrite and intrusive breccias.
Divisadero Zone Highlights:
Hole S18-121 - 95.7 m of 0.85 g/t Au, 9.8 g/t Ag and 0.33% Cu - (1.47 g/t AuEQ) from 32 m
Including 70.0 m of 1.1 g/t Au, 11.8 g/t Ag and 0.56% Cu - (1.88 g/t AuEQ) beginning at 55 m down hole (see press release 2018-10-25);
Sixty-six (66) rock samples assayed with over 50% exhibiting grades in excess of 0.10 g/t gold - assays ranging up to 2.2 g/t gold;
Mineralized surface exposure surrounding drill hole S18-121 in excess of 200m x 300m;
Mineralization appears to remain open to the north and south under thin soil cover;
Extent of the gold mineralized systems surrounding the Company's flagship Nicho (Main/Norte) deposits now extends along NW-SE trend for at least 1.2-1.3 km (see figure 2).
"Following the initial drill hole discovery of the new Divisadero porphyry system, our exploration team began the process of mapping and sampling the available surface exposure around this exciting new target. With over half the surface rock samples returning greater than 0.1 g/t gold, we have confirmed the potential of the new system and have successfully followed the known extents of the Divisadero mineralization for a distance of at least 300 m before it recedes under overburden. With this new information we look forward to further defining the target in our upcoming Phase 2 drill program. As a result of this year's exploration, there are now five known areas of "Nicho-style" intrusion related gold mineralization identified at the Santana project site including the newly identified Zata and Divisadero zones. We are confident that as we expand our geological efforts more discoveries will be made." stated Darren Koningen, CEO of Minera Alamos.
Figure 1 - Divisadero Porphyry Mapping and Sampling
To view an enhanced version of Figure 1, please visit:
Figure 2 - Divisadero Porphyry Location
To view an enhanced version of Figure 2, please visit:
As a result of extensive weathering of the porphyry system surface exposures; copper values though elevated are lower in the surface sampling than those exhibited throughout hole S18-121 which averaged over 0.3% copper over its entire 95m length.
Exploration Plans - Phase 2 Drilling
Evaluation of the new project discoveries is ongoing and will include additional drilling as part of the Company's Phase 2 drill program that is planned to commence shortly and continue into Q1 of 2019. The work will further the understanding of the scale of the porphyry mineralization and its relationship to the mineralized breccia systems that form the predominantly gold-rich mineralization at Nicho Norte and Nicho Main to the southwest.
Mr. Darren Koningen, P. Eng., Minera Alamos' CEO, is the Qualified Person responsible for the technical content of this press release under National Instrument 43-101. Mr. Koningen has supervised the preparation of, and has approved the scientific and technical disclosures in this news release.
All rock samples were collected by Minera Alamos personnel including the Company's exploration geologists. Samples were bagged for analysis and sent for sample preparation at the ALS-Chemex facility in Hermosillo, Mexico. Blanks, duplicates, and standards were randomly inserted with the samples sent for analysis as part of the normal QA/QC procedures. All samples were prepared and analyzed for gold using fire assaying with AA/gravimetric finish in addition to a standard 35-element ICP suite.