The 2018 exploration program focused on developing new gold and silver targets away from the defined resource in addition to a 2482 meter drill program at the South Reef target. Through this program, which included a full review of historical datasets, geologic mapping, stream sediment and rock chip sampling, two new, significant gold and silver targets were identified. These targets are approximately 10km northeast and 3.5km south of the previously identified high-grade resource. The northern target, Bria, is definied by high-grade gold and silver rock samples from mapped quartz viens that are believed to be related to an Eocene aged intrustrive rock. Maximum values from these samples are 11 g/t gold and 448 g/t silver, demonstrating the potential to find high-grade mineralization within the target area. The mineralized veins that were sampled are considered to be leakage structures from potential mineralized bodies associated with mapped intrusive rocks. Rock sample results are presented below in Table 1.
Bria Target Rock Samples*
|Sample ID||Au (g/t)||Ag (g/t)||Cu ppm||Pb ppm||Zn ppm|
|*Approximately 1-2kg of material was collected for analysis and sent to ALS Lab in Thunder Bay, ON for preparation and then to Vancouver BC for analysis. All samples are assayed using 30g nominal weight fire assay with ICP finish (Au-ICP21) and multi-element four acid digest ICP-AES/ICP-MS method (ME-MS61). Where ICP21 results were > 5 g/t Au the assay were repeated with 30g nominal weight fire assay with gravimetric finish (Au-GRA21). Where MS61 results were greater or near 100 ppm Ag the assay were repeated with ore grade four acid digest method (Ag-OG62). QA/QC programs for 2017 rock grab samples using internal standard samples, lab duplicates, standards and blanks indicate good accuracy and precision in a large majority of standards assayed. Grab samples are selective in nature and cannot be consider as representative of the underlying mineralization. |
The southern target area, Kombi, has been defined by historical stream sediment samples taken in 2019, which Auryn’s technical team believes are robust due to the sample collection methodology and assaying methods. One of the high-priority areas at Kombi is defined by a two kilometer trend of gold-in-stream sediments within multiple adjoining drainage basins, demonstrating peak values of 0.91 g/t gold. This continuous trend of gold over multiple catchment areas coincides geologically with the Betty Creek Formation that also hosts the defined Homestake Ridge deposits.
The second high-priority area within Kombi has been identified through stream sediment samples from adjoining dranage basins that define a one-kilometer-long trend at the southern limit of the property. The anomalies are defined by strong gold, silver, copper, antimony and arsenic responses that coincide with the Stuhini group formation, which hosts the former producing high-grade Snip mine that produced approximately one million ounces of gold at an average grade of 27.5 g/t (1).
1. Source: https://www.skeenaresources.com/projects/snip
The 2018 2482 meter drill program at the South Reef target consisted of six drill holes, that did not produce any significan tresults, although sporadic gold mineralization was encountered in each drill hole as presented below in Table 2.
Intercepts Highlight 2018 – South Reef
|Hole ID||From (m)||To (m)||Interval (m)||Au (g/t)||Ag (g/t)|
|True widths of mineralization are unknown based on current geometric understanding of the mineralized intervals.|
The 2017 summer drill program was designed to test 2 of 7 major target areas across the project with a focus on expanding the South Reef mineralized zone as well as the potential northwestern extension to the Homestake Main deposit. Drilling was discovery oriented which targeted new potential zones of mineralization or significant extensions. None of the drilling occurred within 500 meters of the Homestake Main and Homestake Silver deposits, leaving them open for expansion.
The drilling from South Reef demonstrated that the high-grade mineralization has a 15 - 20 degree shallow plunge to the northwest with the width of the structure and associated breccia’s increasing in the same direction. The shallow plunge observed at the South Reef main zone is similar to that observed at the Homestake Main and Silver deposits and represents an excellent opportunity to significantly expand mineralization on the project. Auryn also discovered a 600 meter long gold-in-soil anomaly that coincides with the northwest direction of plunging high-grade mineralization that remains undrilled demonstrating the highly prospective nature of this structural corridor.
Auryn’s 37 hole (14,850 meter) program at Homestake Ridge, which was completed under budget, represented its first field season on the project. Total drilling costs were approximately $400 per meter showing that this area of the Golden Triangle can be explored in an efficient manner.
Significant results from the South Reef diamond drilling are provided in the table below. No significant results were obtained from the Homestake Main extension drilling or other holes.
Significant Intercepts 2017 – South Reef
|* Composite interval includes no less than 4m < 0.2ppm Au True widths are estimated at between 50 – 75% of reported intervals|