• Investor Lounge

    Welcome to the NR Investor Lounge. Given the number of mining opportunities that NR Private Market reviews, we thought it beneficial to our investor base and mining news subscribers to offer further insight into some of the companies that have passed our proprietary vetting process.

Sonoro Gold Corp (TSX-V: SGO)

Sonoro Gold Corp. (TSXV: SGO | OTCQB: SMOFF | FRA: 23SP) is a dynamic gold and silver mineral exploration Company with two gold and silver properties in the mining-friendly jurisdiction of Sonora, Mexico. The Company plans to develop a heap leach pilot operation (HLPO) at its flagship property, the Cerro Caliche gold project and utilize the generated cash flow to fund further exploration and development. Sonoro has a highly experienced management team of mining, business and finance professionals with a successful track record in discovery through to resource development and production.



    VANCOUVER, Canada, June 1, 2021 – Sonoro Gold Corp. (TSXV: SGO | OTCQB: SMOFF | FRA: 23SP) (“Sonoro” or the “Company”) is pleased to report assay results from the final nine RC drill holes, completing Phase Three of its drilling program at the Cerro Caliche gold project, located in Sonora State, Mexico.  As noted in news releases, dated April 5, 2021, and April 26, 2021, the Company extended drilling activities to investigate the potential merging of the Japoneses and Buena Suerte zones into a single body of shallow, oxide gold mineralization. MORE


In January 2018, Sonoro Gold Corp (“Sonoro” or the “Company”), through its wholly-owned Mexican subsidiary, Minera Mar De Plata, SA de C.V., entered into the first of five option agreements to acquire a 100% interest in the Cerro Caliche Group of Concessions which contain eight historic gold mining sites and is located in the municipality of Cucurpe, in northern Sonora State, Mexico.  Historical data, combined with results from Sonoro’s current exploration activities, totaling 23,000 meters of drilling, and more than 6,000 soil and rock samples, confirm the existence of a broadly mineralized low-sulphidation, epithermal vein system with continuing potential to develop a large tonnage resource suitable for open pit mining.

An NI 43-101 technical report estimated inferred mineral resource (at a 0.25 g/t gold equivalent cut-off grade) of 11.5M tonnes at an average grade of 0.495 g/t gold and 4.3 g/t silver that would be amenable to open pit extraction methods.”  The purpose of the technical report is to support the Company’s planned HLPO. To advance the HLPO, the Company has entered into Memorandums of Understanding with three China-based EPC companies for the HLPO’s finance and development. Because there can be no assured date as to when COVID related restrictions will be lifted, Sonoro is also investigating an alternative plan to advance its proposed HLPO with Mexican technical expertise, with the intent of  eliminating the impact of future COVID-19 related travel restrictions.  Additional information on the alternative plan will be announced in due course.

Sonoro’s focus has been the property’s shallow bulk tonnage potential.  Results from drilling and field work, outlined a shallow oxide gold exploration target of between 75,000,000 to 100,000,000 tonnes with grades potentially between 0.3 g/t to 0.5 g/t AuEq. An analysis of all of the results of exploration to date has identified the Cerro Caliche’s deeper high-grade gold potential.  The results were released by Sonoro in its May 26th, 2020 Project Development Report. An analysis of higher grade chip samples taken by the Company, over an area of 4 kms by 3 kms, was done for the Report and found that they were mostly restricted to elevations between 1,100 masl to almost 1,700 masl; most of these samples ranged from 4 g/t to 25 g/t gold with a high of 95 g/t. The decision to initiate the 2020 Phase One exploration drilling, which targets Cerro Caliche’s potential to host zones containing high-grade gold mineralization is based on the content and conclusions of this report and subsequent work to define specific drill targets. The Company has identified a number of deeper high-grade gold targets which it plans to drill in this planned next phase of drilling, subject to the Company obtaining additional financing.



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The Cerro Caliche gold project is strategically situated between two world-class mining districts of the Sierra Madre Gold Belt and the Sonoro-Mojave Megashear. Located approximately 45 kilometers from the town of Magdelena de Kino in the mining district of Cucurpe, the property covers approximately 1,400 hectares and is surrounded by several gold-silver mining operations including the Alio Gold’s San Francisco mine, Premier Gold’s Mercedes mine, Goldgroup’s Cerro Prieto mine and Agnico Eagle’s recently-acquired Santa Gertrudis mine.




Mineralization types throughout the Cucurpe mining district include variants of epithermal low sulfidation veins and related mineralized dikes and associated volcanic domes. Local altered felsic dikes cut the mineralized meta-sedimentary rock units and may be associated with mineralization both in the dikes and meta-sedimentary rocks. The district has historically been regarded as vein dominated, but recently, open pit mining operations have been developed on disseminated and stockwork style gold mineralization.

Host rocks include Jurassic-Cretaceous meta-sedimentary 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 Rincón 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.

The nearby Mercedes mine complex area is interpreted to be part of the same hydrothermal event as the Cerro Caliche hydrothermal event as both are associated with development of extensional structural regional events in Tertiary age around 30 Ma to 35 Ma. Regionally, low temperature gold-silver fluids moved upward from a broad underlying area of emplaced calc-alkaline magma stock, through steep extensional (open) structures that tapped and channeled the fluids that deposited precious metals in quartz vein deposition sites in the Sierra Madre’s epithermal mineralized districts. The “boiling phase” changes kinetics within 1,000 meters of the paleosurface (the surface as it existed during the Tertiary) and defines the zones of deposition for the precious and base metals within the veins.







Sonoro’s exploration conducted in the project area has defined a near surface resource posted to SEDAR which is a maiden resource which both initiates the Company’s program to quantify large areas of mineralized material that could support a conceptual small scale Heap Leach Pilot Operation. Continuation of drilling is projected to extend the mineralization in structural zones along trend and near surface. This completed work, combined with the completion of a working mineralization model, has developed excellent targets for deeper (up 250 meters deeper) high grade gold veins.

The goal of future exploration at Cerro Caliche is to increase the size of the numerous precious metal mineralized zones by focusing on three different mineralization formats:

  1. Extension of known zones of gold mineralization along trend of the vein zones outlined with drilling to the northwest and to the southeast together with the new high grade gold targets below the 75-meter depth of previous drilling;
  2. Targeting of porous geologic units including volcanic basal units of rhyolite flows; and,
  3. Newer untested but surface defined gold mineralized zones where 16 zones remain to be tested.

Future phases of drilling totaling approximately 50,000 meters planned for 2020-21 are designed to test the exploration target of between 75,000,000 to 100,000,000 tonnes with grades potentially between 0.3 g/t to 0.5 g/t AuEqR, assuming AuEqR = (Au g/t × 0.72) + (Ag g/t × 0.01133 × 0.30). The potential tonnages and grades set forth in the analysis of geological potential are conceptual in nature, as there has been insufficient exploration to define a mineral resource and it is uncertain if further exploration will result in the target being delineated as a mineral resource. Potential estimates are separate from the inferred mineral resources stated above.

Drilling will target both infill in zones that were previously drilled as well as a large number of holes to test undrilled portions of the various mineralized trends along strike and at depth.

Phase One of the program (the “Drilling Plan”) will total 6,000 meters of core drilling to test 20 targets, of which the initial 11 holes have been identified in the Drilling Plan. Of the remaining nine holes, seven have been tentatively identified in the Drilling Plan and two are reserved depending on the results of prior holes. This initial core drilling program is the first segment of the proposed 50,000 meters of core and rotary drilling contemplated in the Company’s May 26, 2020 news release.

The main purpose of the 2020 Phase One drilling program is to test for the presence of deeper high-grade type gold mineralization as outlined in the PDR. The PDR, which delineated the potential for higher grade gold zones deeper in the epithermal system, was disseminated to the public by the Company on May 25th, 2020 and is available here.

As illustrated in the Drilling Plan, the proposed 6,000 meters of core drilling will target mineralized zones projected to support vein zone coalescences at elevations favorable for the deposition of high-grade gold, at a depth from surface averaging approximately 200 to 300 meters. Drilling will test the confluence of parallel striking gold bearing vein zones that, at surface, are expressed as gold enriched sheeted vein sets. It will also similarly test at depth, the area’s coalescing of gold enriched stockwork zones. An additional focus is on areas where the rock type changes from quartzite to Cretaceous andesite host rock.

The deep potential targeted by Sonoro will test for similarities to the neighboring Mercedes mine, 9 km to the southeast. The Mercedes mine operates mainly underground with mining supplying a 2,000 tonnes per day mill that has operated since 2011 (Premier Gold website). The Mercedes mine is located in the same mineralized epithermal district and related hydrothermal – igneous system that hosts the Cerro Caliche mineralized area. Average mine-mill grades at the Mercedes mine have ranged between 3 and 6 grams/tonne gold with up to 100 grams/tonne silver. While encouraging because Cerro Caliche shares similarities with the geology at the Mercedes mine site, there can be no assurance that high grade gold zones similar to those at Mercedes will be discovered at Cerro Caliche.



  • San Marcial property located in northern Sonora State, 20 km east of the San Francisco Mine, owned and operated by Alio Gold Inc. (formerly,Timmins Gold).
  • 100% ownership of over 1,000 ha.
  • Excellent road access – close to infrastructure.
  • Old mine workings from early 1900s at Soledad and San Marcial mines.
  • Locally high-grade gold & silver mineralization, with broader lower-grade zones of disseminated to stockwork forms of mineralization.
  • Previous work during 1980s by Cominco; Barrick; and in 1990s by Campbell Resources; Queenstake – air track drilling showed near-surface mineralization.
  • San Marcial gold mineralization hosted in Jurassic sedimentary rocks, consisting of quartzite, shale, limestone and younger porphyritic intrusive rocks.
  • Sonoro conducting surface exploration program – data compilation and geochemical sampling to delineate anomalous zones for drilling.




Qualified Person
All scientific or technical information provided for this website has been reviewed and approved by Stephen Kenwood, P.Geo., a Director of Sonoro Gold Corp., who is a “Qualified Person” as defined in National Instrument 43-101 of the Canadian Securities Administrators.


  • Sonoro - Introduction (7 Oct 20)

    An introduction video from the Sonoro team to help bring to life their projects in Mexico – MORE

  • AXINO interview - July 2020

    CEO Ken Macleod discusses the potencial for high grade gold deposits at our Cerro Caliche gold project site that is strategically situated between two world-class mining districts of the Sierra Madre Gold Belt and the Sonoro-Mojave Megashear. MORE

  • Interview with Jorge Diaz, Operations Manager at PDAC Toronto March 2020

    Jorge Alberto Diaz, VP Operations, Sonoro Gold. met with Wolfgang Seybold from AXINO Media GmbH to discuss technical developments in Mexico. LINK

  • Interview at PDAC in Toronto March 2020 with John Darch Chairman of the Board of Sonoro Gold

    John Darch, Chairman of the Board of Sonoro Gold met with Wolfgang Seybold from AXINO Media GmbH to discuss corporate developments in Mexico. LINK

Directors & Management

  • John M. Darch, Chairman & Director

    John brings over 35-years’ experience in the financing and management of natural resource related projects in both the public and private sectors. In 1981 he co-founded the Vancouver-based Crew Group of Companies which created various natural resources companies including gold (Crew Development Corp. Canada, Greenland & Africa), diamonds (Botswana Diamond Fields Corp., Botswana & South Africa), geothermal (Western GeoPower Corp., Canada), oil & gas (Crew USA, USA), coal, antimony, nickel, and copper (Crew Development Corp., Africa, Zambia & Philippines), tin (South Crofty Holdings, England) and potash (Asia Pacific Resources, Thailand).

    John has successfully secured over USD 300-million in private and public funds from North America, UK and Europe, through listings on the Stock Exchanges in Canada, USA, UK, Germany, Norway and South Africa. LinkedIn

  • Kenneth MacLeod, President; CEO; Director

    Ken has 35 years’ experience as an entrepreneur, financier and executive officer in the resource and energy sectors, having served as President, CEO and director of various public and private companies operating in the Americas, Asia and Africa. He served as President & CEO of Kakanda Development Corp. from 1994 until 2001 and for Western GeoPower Corp. from 2001 until its acquisition by Ram Power Corp. in 2009. Ken also launched and recently sold a private, successful Renewable Energy company currently operating in the Philippines. LinkedIn

  • Melvin Herdrick, Vice-President, Exploration

    Melvin Herdrick is a professional geologist and a member of SME-AIME professional mining organization. He has over 35 years’ experience in mineral exploration in the US and Mexico and has been involved in the successful discovery and re-evaluation of six economically viable deposit with three in production and one in pre-production. He has extensive experience in the exploration of gold, silver and copper deposits as well as in uranium, iron and nickel resource evaluations.

    Mel has spent the past 20-years focused on the discovery and development of gold and silver mineralized deposits in Northern Mexico. He is currently overseeing exploration at Sonoro’s Cerro Caliche deposit where he recently identified a cluster of eight northwest trending gold-dominant structures surrounded by parallel sheeted veinlets and stockwork veinlets. Mel also performed surface and underground sampling of the main mineralized shear vein at the company’s Chipriona concession which lead to the project’s acquisition by Agnico Eagle Mines in 2016. From 2006 Mel served as Vice President of Exploration for Pediment Gold Corp. until its takeover by Argonaut Gold in 2011. During this time, he discovered the two-million-ounce Los Planes deposit at the San Antonio gold project in Baja California Sur and discovered one-million ounces of gold with significant silver at the closed La Colorado mine now back in operation.

    From 1994 until 2002 Mel served as Chief Geologist for Phelps Dodge Mexico. He was the exploration geologist at the Morenci and Tyrone open pit copper mines and was involved in the exploration and discovery of multiple deposits including the La Florida-Barrigon and Piedras Verdes copper deposits. Mel also served as the Senior Exploration Geologist at Kennecott Copper where he was part of the discovery team for the Vermillion River deposit and the Spar Lake deposit, now the Troy copper-and-silver underground mine.

  • Jorge Diaz, Operations Manager, Mexico

    Jorge is a professional mining engineer with over 25-years’ experience in the development and construction of metal mines in Sonora, Mexico. Jorge is also the founder of Interminera, S.A de C.V., a mining consulting, engineering design and construction service company based in Sonora Mexico. Starting in 2011, Jorge began exploration on a gold property in Quiriego, Sonora bringing it to production in 2016 as a mid-size open pit gold producer.

    From 2009 to 2016 he served as the general manager of the San Antonio project for Argonaut Gold overseeing land negotiations, environmental studies, engineering and operations design. From 2004 to 2006, he was the general manager of the El Cairo project for Morgain Minerals overseeing design, construction and initial production. From 2002 to 2004, he served as general manager of the Mulatos project for Alamos Gold playing a leading role in developing a new mineral resource model and reengineering the project

  • Stephen Kenwood P. Geo., Director; Qualified Person

    Steve has a Bachelor of Science (Geology) degree from the University of British Columbia and over 20 years’ experience in the global mining sector including 12 years in the management of junior exploration companies.

    Steve worked as a geologist with Cominco Ltd. on the Snip gold mine and as a project geologist on Eskay Creek polymetallic massive sulphide deposit. He also worked as a geologist at the Petaquilla copper-gold porphyry deposit in Panama. LinkedIn

  • Salil Dhaumya, CPA, CMA; Chief Financial Officer

    Salil previously served as the Chief Financial Officer, Principal Accounting Officer and Secretary of Pan American Goldfields Ltd (Formerly Mexoro Minerals Ltd.) He also served as a Controller and General Manager of Aquilini Investment Group, a private real estate development company.

    Salil earned a Bachelor of Commerce (Honours) Degree from Panjab University, India in 1985 and obtained a certified management accountant designation in British Columbia, Canada in 2004. LinkedIn

  • Neil Maedel, Executive Director, Corporate Finance

    Neil is a Southeast Asia based venture Capitalist with an extensive background in the analysis and finance of small cap companies beginning with The Minicap Analyst in 1988, and later Protrader Finanz AG which were based in Switzerland and which are associated with numerous highly successful start-ups in North America. Neil was Director, Business Development at Switzerland-based Manas Petroleum, when it assembled a 5-country portfolio of large light oil prospects, ranging from high risk exploration to discovery appraisal. He was also Chairman of Pan American Goldfields, directing the executive team which turned around the troubled company, doubling its interest in its principal asset to 80%, while more than doubling the size of the resource from 800,000 to 2,000,000 AuEq ounces, as defined in a NI 43-101 compliant Preliminary Economic Assessment (PEA). Pilot gold production was also initiated ultimately reaching over 2,000 AuEq ounces per month, with a goal of funding the deposit’s development. In 2014 Neil co-founded, as a director, Kenadyr Resources, which is currently drilling to define high-grade gold zones now demonstrated to extend from ZiJin Mining’s TBL mine in the Kyrgyz Republic. LinkedIn

  • Katharine Regan, Corporate Secretary

    Katharine has over 25 years’ experience in generating Business Development Programs across multiple industries in both the private and public sectors. Her particular expertise is in project development, administrative operations and corporate communications. As an independent consultant, Katharine also assists companies implement and maintain corporate governance, regulatory compliance and corporate social responsibility.

  • James Taylor, Director

    Mr. Taylor spent 35-years as an investment advisor with several firms, including Canaccord Investment Corp and Yorkton Securities from 1980 to 2011; Richardson GMP from 2011 to 2014; and Dundee Goodman from 2014 to 2016. During his employment as an investment advisor, Mr. Taylor participated in the financing of numerous exploration and venture companies that grew to success as significant mineral producers. Mr. Taylor also serves as a director at Auston Capital and Captiva Verde Land Corp. LinkedIn