Aziana believes this prospect has potential for a significant Copper/Gold/Silver discovery. Numerous artisanal mines extracting gold are visible across the license area and occurrences of distinctive copper mineralisation can be observed across the tenement area.
Chalcopyrite-malachite-copper oxide Mineralisation, Anosivola East
The Anosivola project lies within a historically producing Cu-Au belt in south-central Madagascar, 300 kilometres south-east of the capital, Antananarivo. Small-scale mining prior to 1924 from quartz veinlets within the tenement area is reported to have produced 60kg of gold. The license area mainly consists of meta-sedimentary rocks lying within the Itremo Fold Nappe Complex. Reconnaissance mapping, trenching, sampling and airborne magnetics completed by Aziana across the Anosivola tenement area has already identified widespread Cu-Ag-Au-Mo mineralisation in veins and shears up to 6m wide within a series of high grade metamorphic schists and marbles, intruded by several phases of granitic-dioritic melts. Mineralisation consists of malachite, azurite, chalcocite and chalcopyrite in veins and disseminations through the host marbles, gneisses, diorite and doleritic dykes.
Geology and Copper Occurrences, Anosivola Project
Four distinct structural zones with associated copper mineralisation or soil anomalism are now defined in the project area, with strike lengths up to several kilometres and widths of mineralised sections up to at least 6m. These are:
Cu-Au-Ag-Mo in shears within marbles and diorite, with best from rock chip channel sample assays of 1m @ 30.63 g/t Au, 2.37% Cu and 111.3 g/t Ag, 0.5m @ 23.96 g/t Au, 10 g/t Ag and 0.21% Cu, 1m @ 3.15g/t Au, 43.6 g/t Ag, 7.90 % Cu and 0.27% Mo, and 3.0m @ 1.34 g/t Au, 2.2 g/t Ag, 0.74 % Cu and 478 ppm Mo.
Anosivola East – Bevoamanga structure
A WNW-trending structure at least 5kms long containing zones of mineralisation (including malachite, azurite, chalcopyrite, and bornite, with significant amounts of sulphides present at surface – see photographs) and coincident with a distinct magnetic low corridor. Best assays from rock-chip channel samples across the structure include 6m @ 2.7% Cu and 2.6m @ 5.26% Cu (Anosivola East) and 3.3m @ 8.2% Cu, 0.25m @ 18.06% Cu and 0.25m @ 4.26% Cu (Bevoamanga). These assays were carried out using the handheld pXRF on pulverized rock chip samples.
Malachite-Azurite from Anosivola East
Numerous Cu-bearing amphibolite layers up to 2m wide, several tens of meters in length, occasionally moderately altered to silica-chlorite-epidote-magnetite. These contain variable amounts of copper carbonates and sulphides, including chalcopyrite and bornite, with assays up to 0.18%Cu.
Soil sampling has outlined a new and large (2.5kms x 750m) copper-lead zone with soil values assayed by pXRF greater than 3 times and up to 15 times background for copper, and more than 21/2 times background for lead.
Additional widespread smaller occurrences have also been discovered during mapping. Our ongoing exploration continues to expand the copper footprint within the Anosivola project area.