The 100% Erdene-owned Dark Horse (Khar Mori) gold prospect is situated on the Bayan Khundii license, 3 kilometres north of the Bayan Khundii project, at the intersection of the proposed major deep-seated structures.
The Dark Horse prospect was discovered in early Q4 2019 on a previously under-explored portion of the Khundii Mining License and proximal to previously identified gold mineralization at the Altan Arrow prospect. Surface exploration in late 2019, including detailed geologic mapping and geochemical sampling (rock chip and soil), identified multiple samples grading over 5 g/t gold, including an 87.8 g/t gold rock chip sample hosted within comb quartz-adularia veins.
In June 2020, the Company trenched new gold zones at Dark Horse, with assays returning 6 metres grading 8.8 g/t gold, including 1 metre of 50.8 g/t gold, and 4 metres of 14 g/t gold, including 1 metre of 45.3 g/t gold. As a large untested prospect, Dark Horse provides significant discovery potential along strike with a well-defined and continuous gold-in-soil anomaly along a NE trending structure for 1.3 kilometres. Also, there are gold-in-soil anomalies at or near NE-NW and N-S structural intersections.
Erdene carried out a phased drilling program in the second half of 2020 consisting of 4,660 metres in 25 holes (AAD-40 to AAD-64). Initial drilling results reported in October 2020 were positive, with high-grade gold intersected in two holes: AAD-48 returned 30.6 g/t gold over 1 metre, within a 7-metre zone of highly anomalous gold (up to 0.2 g/t), beginning 27 metres from the surface and AAD-41 intersected 10.8 g/t gold over 1 metre, below trench KMD-03 at a vertical depth of 29 metres, 1.25 kilometres east of AAD-48. All holes intersected elevated to anomalous gold and/or broad zones anomalous in pathfinder elements (arsenic, molybdenum and antimony).
In January 2021, the Company reported the results of a drilling program completed in early December 2020 (Press release). The gold mineralization is located within a relatively under-explored area of the Dark Horse prospect, situated along a north-south (N-S) trending structure traced by a magnetic-low signature, local exposures of epithermal breccia and stockwork veining exhibiting gold anomalism in soil over a trend of approximately 4 kilometres. The N-S structural feature targeted by holes AAD-51, AAD-57 and AAD-58 and AAD-61 is located one kilometre west of AAD-48 (see October 26, 2020 release). This N-S feature has been traced over a 3-kilometre strike length from the Altan Arrow structure in the north to the CSZ Zone in the south and continues a further one kilometre south where it connects with the Bayan Khundii deposit; all lying within Erdene’s 100% owned 2,309-hectare Khundii mining license.
The new discovery area extends over a distance of 1.2 kilometres, from AAD-51 in the north to AAD-58 in the south, and is located proximal to a N-S structure with associated gold in soil anomalism, white mica alteration and a pronounced magnetic low. The following is a summary of the drilling results (from north to south) for the four widely spaced holes drilled along 1.2 kilometres of the 4 kilometres N-S stricture:
- AAD-51, collared 1.2 kilometre north of AAD-58, returned 3 metres of 5.6 g/t gold beginning at 138 metres down-hole and 10 metres of 0.9 g/t gold starting 222 metres downhole;
- AAD-61, located 500 metres south of AAD-51, returned 130 metres of 0.53 g/t gold beginning 10 metres down-hole;
- AAD-57, located 500 metres south of AAD-61, returned 16 metres of 0.6 g/t gold beginning at 52 metres down-hole, and 48 metres of 1.2 g/t gold beginning at 194 metres down-hole, including 30 metres of 1.7 g/t gold; and
- AAD-58, located 180 metres south of AAD-57, returned 45 metres of 5.97 g/t gold beginning at 10 metres down-hole, including 1 metre of 82.5 g/t gold within 8 metres of 27.1 g/t gold.
These drilling results establish Dark Horse as the most significant gold mineralization zone since the Bayan Khundii gold deposit discovery. The high-grade drill intersections, combined with the geophysical and geochemical signatures traced over a 4-kilometre mineralized trend, demonstrate the emerging Dark Horse prospect’s significant size potential.
Reported intervals are apparent thicknesses (i.e. downhole widths). Insufficient drilling has been completed at Dark Horse to determine the orientation of the mineralized zones, and therefore true widths cannot be determined at this time.
Mineralization remains open in all directions.
Peter Dalton, P.Geo. (Nova Scotia), Senior Geologist, Erdene Resource Development Corporation, is a Qualified Person within the meaning of National Instrument 43-101 and has reviewed and approved the scientific and technical information contained herein.
No technical report available at time. See Erdene’s latest MDA disclosure for technical description of the project (click here)