Sierra Madre Gold and Silver: Revitalizing the La Guitarra Mining Complex

Sierra Madre Gold and Silver Ltd., a Vancouver-based precious metals exploration and development company, is on the brink of a significant milestone in the mining sector. The company anticipates commencing commercial production at its La Guitarra gold and silver mining complex in Mexico before the end of the year. This development marks a pivotal moment for Sierra Madre, especially following its acquisition of the mine from First Majestic Silver in March 2023, with the goal of restoring its production capabilities.

The Acquisition and Vision for La Guitarra

The acquisition of La Guitarra was a strategic move for Sierra Madre, aiming to tap into the mine’s rich history and potential. La Guitarra is located in the Temascaltepec mining district, an area known for its mineral wealth. The mine has a storied past, having produced precious metals until mid-2018, and Sierra Madre’s vision is to revitalize this operation and bring it back to its former glory.

Progress in Test Mining and Processing

Since the initiation of test mining and processing on June 25, 2024, Sierra Madre has made significant strides. The company has been rigorously testing the operation of all three ball mills at the site, both simultaneously and in various combinations. This testing phase is crucial for optimizing the processing capabilities of the mine.

As of mid-October, the daily throughput in the grinding and flotation circuits has reached impressive levels, with a peak of 504 wet metric tonnes per day (WMT/d). The average throughput from October 1 to October 18 was 428 WMT/d, despite scheduled downtime for maintenance and power outages typical of the rainy season. This consistent performance indicates a robust operational framework that Sierra Madre is establishing at La Guitarra.

Flotation Plant Performance and Recovery Rates

The flotation plant at La Guitarra has been in continuous operation since the commencement of test mining, showcasing the efficiency of the processing circuit. To date, silver recoveries have averaged an impressive 78%. Sierra Madre is committed to enhancing these recovery rates further. Based on recommendations from metallurgical consultants, the company plans to test a new reagent combination aimed at improving silver recovery from oxidized materials.

Gold recovery rates have also shown a positive trend, increasing from 74% in June to an average of 87% in October. This upward trajectory in recovery rates is a promising sign for the future profitability of the mine.

Processing and Concentrate Shipment

Since the start of test operations, Sierra Madre has processed a total of 39,272 tonnes of mineralized material deemed economically viable. The company has successfully shipped 690 dry metric tonnes of concentrate to MRI Trading, with average provisional concentrate payment grades reported at 2,903 grams per tonne (g/t) for silver and 34.7 g/t for gold. These figures highlight the mine’s potential to generate substantial revenue once commercial production begins.

Future Prospects and Exploration

Sierra Madre Gold and Silver is not only focused on the revitalization of La Guitarra but is also actively exploring and developing its Tepic property in Nayarit state. This dual focus on both production and exploration positions the company well for future growth in the precious metals sector.

La Guitarra, with its licensed underground mining operations and a processing plant capable of handling 500 tonnes per day, represents a significant opportunity for Sierra Madre. The company’s commitment to restoring production and enhancing recovery rates bodes well for its future in the competitive mining landscape.

Conclusion

As Sierra Madre Gold and Silver prepares to transition from test operations to commercial production at La Guitarra, the mining community watches with keen interest. The company’s strategic acquisition, ongoing operational improvements, and commitment to maximizing recovery rates underscore its potential to become a key player in the precious metals market. With the groundwork laid and promising results emerging from test operations, Sierra Madre is poised to make a significant impact in the mining industry, revitalizing a historic site and contributing to the local economy in Mexico.