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Sonoro Gold Corp
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Close 2021-02-16 C$ 0.225
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Sonoro Gold drills 3.05 m of 6.839 g/t Au at Cerro

2021-02-16 13:02 ET - News Release

Mr. Kenneth MacLeod reports


Sonoro Gold Corp. has released the latest assay results from its continuing drilling program at the company's Cerro Caliche gold project in Sonora, Mexico. The new results reflect 24 drill holes, totalling 2,591 metres, and highlight the following:

  • Significant increase of strike length at the Buena Suerte gold-mineralized zone to 900 metres;
  • High-grade intercepts at the newly identified southern extension at Buena Suerte, including SCR-159 which intercepted 3.05 metres averaging 6.839 grams per tonne (g/t) gold (Au);
  • Continuous mineralization confirmed at the two-kilometre-long El Rincon/Veta de Oro/Abejas vein and stockwork gold-mineralized zone;
  • Identification of the new Bellotoso gold-mineralized zone with an initial strike length of 1.2 kilometres.

Kenneth MacLeod, president and chief executive officer of Sonoro, commented: "Our strategy of infill and expansion drilling in our defined gold-mineralized zones, together with strategically located scout holes in prospective new zones, is proving to be very successful. The addition of Bellotoso to our inventory of mineralized zones and the prospect of additional zones in parallel with Bellotoso suggests that the mostly unexplored northeast region of Cerro Caliche may develop into a very significant exploration target."

John Darch, chairman of Sonoro, also noted: "The continued material expansion of the Buena Suerte gold zone and the positive drilling results at El Rincon and the newly identified Bellotoso zone not only brings us closer to our goal of developing a major bulk-tonnage, oxide gold resource to support both the conceptual 20,000-tonnes-per-day target capacity being addressed by our planned preliminary economic assessment, but also the potential for gold production growth in the years to come."

Buena Suerte zone extended to the south and southeast

At Buena Suerte, results extend the zone to a total length of approximately 900 metres, suggesting a material contribution to Cerro Caliche's growing inventory of drilling-defined potentially bulk-minable oxide gold mineralization. Drilling extended the vein zone to the southeast by approximately 300 metres along strike, with additional south-trending vein structures expanding the cross-section of the zone approximately 300 metres in the southern extension. Assay highlights include:

  • SCR-159 intercepted 7.62 metres (m) averaging 3.088 g/t Au, including 3.05 m averaging 6.839 g/t Au.
  • SCR-158 intercepted 6.10 m averaging 0.731 g/t Au, including 3.05 m averaging 1.354 g/t Au.
  • SCR-160 intercepted 6.10 m averaging 0.785 g/t Au and 1.53 m averaging 1.769 g/t Au.
  • SCR-167 intercepted 3.05 m averaging 2.325 g/t Au and 3.05 m averaging 0.787 g/t Au.

Drill hole SCR-159 is located approximately 60 metres southeast of the previously reported SCR-143, which intercepted 12.19 metres averaging 0.687 g/t Au, including 1.52 metres averaging 1.741 g/t Au. Approximately 100 metres to the west of the main Buena Suerte vein structure, drill hole SCR-158 targeted a separate parallel vein zone. Drill hole SCR-164 extends the parallel-running vein approximately 120 metres to the southeast to nearly intersect the main zone where drill hole SCR-168 cut several intercepts with gold mineralization, including 3.05 metres averaging 0.798 g/t Au and 6.09 metres averaging 0.462 g/t Au.

Continuous mineralization at El Rincon/Veta de Oro/Abejas zone

Between El Rincon and Veta de Oro, infill drill holes SCD-036 and SCD-037 intersected narrow gold-mineralized intervals confirming a one-kilometre-long gold-mineralized zone connecting the 250-metre-long El Rincon zone with the 500-metre-long Veta de Oro vein system. The zone extends farther southeast to the 300-metre-long Abejas stockwork zone and may extend another 500 metres southeast to include the Chinos Altos historic mine area. Future drilling will investigate this untested area.

El Rincon remains open along strike to the northwest following outcropping quartz veins and infill drilling focused on linear zones of disseminated stockwork and higher-grade gold-bearing veins along El Rincon's southeastern striking trend beginning 100 metres southeast of SCD-021. As earlier reported in a news release dated Dec. 8, 2020, SCD-021 intercepted 21 metres averaging 0.88 g/t Au, including 2.9 metres averaging 3.86 g/t Au. The area is covered in soil and is steeply sloping, making the exact identification of the vein system challenging.

New Bellotoso gold-mineralized vein stockwork zone

The newly discovered Bellotoso zone is located parallel to the east side of the El Rincon/Veta de Oro mineralized zone and follows a similar northwest trend. Six core drill holes completed in this zone identify a range of very encouraging gold-mineralized widths, including SCD-043 which intercepted three metres averaging 1.67 g/t gold equivalent (AuEq). In the zone's southeast, drill hole SCD-039 intercepted 2.2 metres averaging 2.227 g/t AuEq and 300 metres to the northwest and SCD-037 intercepted two metres averaging 1.78 g/t AuEq. Located approximately 200 metres to the northwest along strike, drill hole SCD-041 returned several intervals of gold mineralization, including 3.5 metres averaging 0.985 g/t AuEq.

The Bellotoso mineralized trend currently has a length of approximately 1.2 kilometres and scattered rock samples and historic soil samples from earlier exploration indicate mineralization may continue southeast to the Espanola vein zone. If confirmed, Bellotoso's shallow, mineralized, oxide gold zone may extend another 1.5 kilometres. The company plans to investigate this potential with drilling planned at the Espanola vein zone.

Drilling results from Bellotoso are part of a wider anomalous gold-mineralized zone than identified in the reported intervals. For example, the three intervals reported in SCD-043 are within a broader 48.8-metre zone of anomalous gold mineralization averaging 0.372 g/t Au. Bellotoso has demonstrated wider zones containing higher-grade gold intercepts over its 1.2-kilometre length and geological indications suggest that it may merge with the Espanola vein zone into one potentially bulk-minable zone with a combined length of 2.7 kilometres. The company is currently investigating Bellotoso's potential as an additional source in the Cerro Caliche's inventory of shallow oxide gold mineralization.

Mel Herdrick, Sonoro's vice-president of exploration, commented: "The reported intervals show that where new zones are being drill tested, they demonstrate positive results with significant intervals of gold mineralization. We are currently drilling to define the 500-metre-long west side of Japoneses ridge and also drilling up to an additional 19 holes at Buena Suerte to increase the mineralization definition before we resume drilling in the Rincon and Bellotoso areas in March."

Gloria zone

The Gloria vein trend, located over one kilometre northwest of the Japoneses zone, was drill tested with holes SCR-169 through SCR-173. These five drill holes cut the targeted vein zone, with only SCR-10 containing a reportable interval of 12.19 metres averaging 0.331 g/t Au, or 0.408 g/t AuEq. The remaining holes contained only minor intervals with low gold content without any significant gold-bearing zones. Drilling by Sonoro during 2018 demonstrated multiple lower-grade intercepts in four drill holes along trend northwest of the current drilling, with the most notable being SCR-053, which reported 1.52 metres grading 0.676 g/t Au (see Sonoro news release dated April 29, 2019). The Gloria zone will be further assessed to determine the prospect for additional drilling along trend to the northwest.

Quality assurance/quality control (QA/QC) measures and analytical procedures

Drill samples are collected with an airstream cyclone and passed into a splitter that divides each sample into quarters. The quartered samples are then bagged and sealed with identification. The sample group has blanks, standards and duplicates inserted into the sample stream.

Bureau Veritas (BV) collects the samples and transports them directly to the preparation laboratory in Hermosillo, Sonora. At the laboratory, part of each sample is reduced through crushing, splitting and pulverization. About 200 grams are sent by BV to its Vancouver, Canada, laboratory and dissolved in aqua regia for multielement ICP analysis, including silver. Of these samples, 30 grams undergo fire assay in Hermosillo for gold by reducing the fire assay to a concentrated button of material that is dissolved in acids and the gold content determined by atomic absorption.

No QA/QC issues were noted with the results received from the laboratory.

Geologic description

Cerro Caliche is located 45 kilometres east southeast of Magdalena de Kino in the Cucurpe-Sonora megadistrict of Sonora, Mexico. Multiple historic underground mines were developed in the concession, including Cabeza Blanca, Los Cuervos, Japoneses, Las Abejas, Boluditos, El Colorado, Veta de Oro and Espanola. Mineralization types of the Cucurpe-Sonora megadistrict include variants of epithermal low-sulphidation veins and related mineralized dikes and associated volcanic domes. Local altered felsic dikes cut the mineralized metasedimentary rock units and may be associated with mineralization both in the dikes and metasedimentary rocks.

Host rocks include Jurassic-Cretaceous metasedimentary rock units, including argillite, shale, quartzite, limestone, quartz pebble conglomerate and andesite. Younger intrusive rock consisting of medium coarse-grained granodiorite-granite is present in the westerly parts of the concessions near the historic Cabeza Blanca mine. It is apparent that veining cuts and pervasively alters the intrusive stock. Rhyolite occurs in irregular bodies distributed in higher elevations in the northerly part of the concession, including the Rincon area, where it occurs as flows, sills, dikes and rhyolite domes. Part of the rhyolite is mineralized and appears to be related to epithermal gold mineralization throughout the property.

Qualified person statement

Stephen Kenwood, professional geoscientist, a director of Sonoro, is a qualified person within the context of National Instrument 43-101 and has read and approved this news release. Readers are cautioned that the presence of mineralization on historic mines adjacent to or on Cerro Caliche is not necessarily indicative of gold mineralization in the concessions held by the company.

About Sonoro Gold Corp.

Sonoro Gold is a publicly listed exploration and development company with a portfolio of exploration-stage precious metal properties in Sonora state, Mexico. The company has highly experienced operational and management teams with proven records for the discovery and development of natural resource deposits.

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