At the Imperial Project, Symbol Mining has completed very high resolution (VHR) photogeology with 502km2 surveyed over EL18445, EL18444 and EL 18448. This has identified 120 priority target features. Geological mapping and sampling over some of the priority targets has been completed, and aerial geophysical survey data has been acquired.
The currently known prospects on both Projects are all fault-controlled veins that have many of the characteristics of significant deposits described elsewhere as “polymetallic veins” or “clastic-hosted veins”. It is possible that parallel or sheeted vein systems will be present and, if so, this offers the opportunity for bulk mining and increased tonnage per vertical metre.
The best opportunity to find large-tonnage deposits will be as “blow-out Breccias” or replacement bodies or “mantos” where the veins intersect favourable host rocks. Typically, these favourable hosts will be thick competent sedimentary units (particularly massive carbonates) that fail under stress by brittle fracture and are chemically reactive to mineralising fluids that penetrate the fractures.
A geology team has been engaged to complete sampling, mapping and target identification from the geophysics and known artisanal workings throughout the 510km2 of the Imperial Project. A recent ground survey has highlighted excellent potential for numerous additional Zn/Pb (Ag) zones of mineralisation at the Imperial Project. Mineralised veins have been emplaced along structures that display significant brecciation, silicification and open-space quartz veining caused by hydrothermal fracturing of the country rock (healed shatter zones or HSZs). These zones vary from approximately 2m to 15m wide at surface, and are readily identified due to boulders with brecciated texture, silicification and veining at the surface
Some of the more obvious HSZs have been subject to shallow artisanal workings where visible galena, sphalerite and sometimes copper minerals are present. These workings are shallow due to the hard nature of the HSZs and, in some cases, high water table. The HSZs represent excellent drill targets for Zn/Pb (Ag) mineralisation along strike and down dip.
In addition to the areas already drilled and tested, a further six main areas of new mineralisation have been identified at the Imperial Project, including the following:
- Ruga South – A cluster of lodes and four strong HSZs with outcropping strike of 4.2km within a broad fault zone with past artisanal activity. Outcropping oxidised pyrite points to abundant sulphides at depth.
- Imperial Extension – 2.3km of intense HSZ textures along strike from the Imperial Project vein. Important implications for greatly extending the Macy Deposit to the north. Galena, sphalerite and copper sulphide minerals in the northern shallow workings. [Delete as already tested?]
- Imperial West – 830m of moderate HSZs with past workings.
- Imperial South – 650m of moderate HSZs marked by a cluster of artisanal pits and gouges.
- Wum Village – At least 500m of HSZs with some workings containing visible galena and copper sulphides.
- Tapere Area – A total of 1,400m of shaft, trench and slot workings.
Additionally, numerous other areas of small scale artisanal workings have been noted and include Fulani and Fulani East, Hard Yakka and the River prospects.
Figure 1. Imperial Project – over 30 drill targets identified