Riverside exploration work
Riverside’s exploration team is currently in the field completing mapping and sampling work along strike of the known vein system and believes there is also great potential to identify new veins across the greater property package. Riverside has not yet performed any exploration work at the property and looks to begin a program in the near future to confirm historical results.
Riverside has identified three (3) primary targets at the Los Cuarentas Project; the Santa Rosalia target, the Santa Rosalia Sur target, and the El Sombrero target. Riverside geologists will focus their initial efforts towards the Santa Rosalia target utilizing past data to refine the target area and work program. The Company is also working on interpretations of the structural control of the high-grade ore shoots to better understand and delineate the volcanic-hosted, low sulfidation veins found on the property.
|The historical mine area can be accessed via old shafts and adits. The high-grade samples taken by Millrock Resources in 2018 of 5 g/t Au and up to 17 g/t Au within structures makes this an intriguing exploration target. The Santa Rosalia target shows clay alteration with inward zoning of silicification grading into a well-defined silicified vein structure and is a priority for drill discovery. Previous mapping, sampling, underground work and other research studies of the historical mine operations include: Santa Rosalia Mining, Centerra Gold, Paget Minerals, and the Mexican Geological Survey providing a wealth of data for targeting and drilling.
Santa Rosalia Sur:
Santa Rosalia Sur target is located southeast from the historical Santa Rosalia mine area and has been a focus for recent exploration by Centerra. Centerra conducted an IP survey, detailed soil geochemical survey, detailed rock sampling and geologic mapping. The IP was conducted by Zonge Geophysics in December 2016. The Santa Rosalia Sur target comprises a well-defined 800 m long, structural zone that has been mapped and sampled for alteration minerals (Terraspec) for vectoring and targeting.
At El Sombrero target the alteration is very extensive showing silica caps indicative of high-level boiling zones within an epithermal system. The El Sombrero target is located E-SE of Santa Rosalia Sur and comprises altered andesites, dacites and agglomerates. This alteration in conjunction with Centerra Gold’s geochemical soil survey and selected rock chip samples has delineated this region as a third priority target.