- El Cubo is a high-grade, epithermal-vein, underground precious metals mine that has been in operation for almost 200 years.
- From 2012-2019 Endeavour Silver produced 12M ounces of silver and 144,000 ounces of gold from El Cubo.
- Capacity: 50,000 tonnes per month.
Guanajuato Mining District
- Guanajuato is at the heart of the prolific Mexican Silver-Gold Belt (over 2 billion ounces of silver produced to date).
- World class silver mining district (top 5 of global silver camps).
- El Cubo Mill and Processing Complex.
- Major upgrades completed in 2012 and 2021 (~US$30M in total).
- Processing uses conventional crushing, grinding, flotation and silver-gold concentrate filtration.
Clean. Dry. Organized. 
Resources
(as per Jan 2021 Preliminary Economic Analysis)
(as per Jan 2021 Preliminary Economic Analysis)
| Tonnes | Silver (g/t) |
Gold (g/t) |
Silver Eq. (g/t) |
Silver Eq. (ounces) |
|
| Indicated | 508,055 | 194 | 2.44 | 389 | 6,354,000 |
| Inferred | 1,453,000 | 214 | 2.78 | 435 | 20,323,000 |
Silver Equivalent: (1 ounce gold = 80 ounces of silver)
Based on average of 5-year historic silver and gold prices.
Based on average of 5-year historic silver and gold prices.
Mineralization
- Classic high-grade, silver and gold epithermal vein system.
- Vein mineralization is normally 1-2 meters wide with mineralized breccia zones of up to 10 meters wide.
- Economic concentrations of silver and gold exist as shoots.
- Initial production will focus on the Villalpando Vein structure; primary production will come from three stopes: 1850, 2175 and Cebolletas.
- GSilver will mine using a narrow 1.4 meter minimum vein width; this will generate less dilution, less waste, less tailing and less cost per ounce produced.
- The mining method is primarily cut & fill with some resue mining, which allows for selective, non-dilutive mining that focuses on the vein itself.
GSilver will mine the northwest striking veins of Villalpando and Dolores, which run in parallel. Several high-grade transverse veins also exist at El Cubo, such as La Loca and San Esubio.
