An overview of the WORK CARRIED OUT IN NLMC MINING PERMITS AFTER 2018
OIn 2018, the work carried out by NLMC Mining includes a compilation of all existing geological, geochemical and geophysical data in the NLMC database, structural mapping of the main gold panning sites, samples from outcropping structures, digging of trenches and drilling of RC surveys. The trenching and RC drilling work was concentrated around the mineralized zones in the old shaft/trenche structures and those most anomalous in ground geochemistry.
• • Mapping of gold panning sites, rock sampling and main results: 221 samples were taken from quartz veins and veinlets at the levels of old pits/trenches or in old and active gold panning sites. These quartz structures show orientations that oscillate between NW, NS, NE and EW with dips varying between sub-vertical to medium.
• The analysis of these samples revealed contents between 0.21 and 6.48 ppm Au. They are located in highly anomalous areas in ground geochemistry (figure 8).
• 8 QA/QC samples were inserted into the batches of samples sent to the laboratory (4 blank samples, 2 standard samples and 2 duplicate samples).
All standard analysis results fall within the tolerance range of the original samples.
To test the continuities of the anomalous structures downstream, a program of 80 RC drillings totaling 6,773 linear meters on the two NLMC permits. All our samples were analyzed at SGS Bamako
| Year | RC drilling | Trenches | Rock chips | ||
|---|---|---|---|---|---|
| Drilling number | Total meters | Number of trenches | Total meters | ||
| 2018 | 27 | 2350 | 5 | 297 | 100 |
| 2019 | 4 | 176 | 26 | 2463 | 89 |
| 2020 | 46 | 3915 | 3 | 161 | 32 |
| 2021 | 3 | 332 | 0 | 0 | 0 |
| Total | 80 | 6773 | 34 | 2921 | 221 |
| Year | Am2005522 | 1348 (3284) | Total | |||
|---|---|---|---|---|---|---|
| Number of drilling | Total Meters | Hole Number | Total Metres | Total Hole | Total Metres | |
| 2018 | 11 | 907 | 16 | 1443 | 27 | 2350 |
| 2019 | 0 | 0 | 4 | 176 | 4 | 176 |
| 2020 | 13 | 907 | 33 | 3008 | 46 | 3915 |
| 2021 | 0 | 0 | 3 | 332 | 3 | 332 |
| Total | 24 | 1814 | 56 | 4959 | 80 | 6773 |
| RC QAQC | Blank | Duplicat | Standard | Samples | Total | |
| 2018 | 102 | 51 | 51 | 2342 | 2546 | |
| 2019 | 8 | 4 | 3 | 172 | 187 | |
| 2020 | 84 | 82 | 82 | 3871 | 4119 | |
| 2021 | 7 | 7 | 7 | 332 | 353 | |
| Total | 201 | 144 | 143 | 4959 | 7205 | |
On Permit 1348 (3284), 56 RC drillings totaling 4,959 with three directions N270 at Soso Town3, N255 at Soso Town2 and N255 at Soso Town 1.
The inclination is -55, they targeted gold panning areas, geochemical anomalies, old wells and mineralized trenches. The results generally show low contents and high powers, the contents vary from 0.22 to 36.2 ppm Au, with powers oscillating between 1m and 15m.
At the level of permit Am2005522, 24 drillings with a total of 1,814 linear meters were completed on this permit, with a direction of N 160 and 315 and an inclination of -55, they targeted the gold panning areas, the old wells and mineralized trenches. The results are generally average, the contents vary from 0.19 to 9.74 ppm Au with powers which sometimes exceed 10m (figure 8).
From the results of the RC trenches and surveys we can conclude the existence of mineralization essentially linked to quartz veins. The mineralized directions appear to be diverse, varying between NS, NE, EW and NW. The EWs seem more predominant in the reconnaissance zone.
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Additional trenches and surveys will be necessary to identify the most mineralized directions and develop their lateral and depth extensions.
The drilling mesh varies from one area to another, at Soso Town01 the drilling mesh was 75m x 50m, Soso Town03: 40m x 30m, Soso 02: 80m x 35m.