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Seabridge Defines New Gold-Copper Porphyry Target at Iskut

by ahnationtalk on October 21, 201924 Views

Toronto, Canada… Seabridge Gold (TSX:SEA) (NYSE:SA). Geophysical surveys, geochemical sampling and detailed mapping were completed this summer at Seabridge’s 100%-owned Iskut Project in northwestern British Columbia. This work has identified a large intrusive system at relatively shallow depth that is likely responsible for the Quartz Rise Lithocap and elevated gold and copper concentrations within a geological environment remarkably similar to Seabridge’s nearby KSM Project.

This year’s objective was to define the geophysical limits and assess the geochemical and geological expression of a possible porphyry intrusive system which would account for the mineralization found at Quartz Rise. This work included 1.4 square kilometers of 3D IP surveys, 260-line kilometers of high resolution magnetic surveys and 184 surface geochemical samples.

Previous drilling at the Quartz Rise Lithocap focused on testing for high-grade epithermal precious metal occurrences associated with the uppermost portion of a porphyry mineral system. Results determined that the Quartz Rise Lithocap had been substantially eroded. However, a hydrothermal breccia (diatreme) discovered in 2018 was found to contain clasts of porphyry-style vein fragments which confirmed an underlying porphyry source for the lithocap. This breccia feature is enclosed by an IP chargeability anomaly coincident with a magnetic high, a porphyry geophysical signature (see illustrative cross section below).

Detailed work on the surface expression of the diatreme found that it plunges to the south toward the highest intensity chargeability anomaly and geochemical signature.  The geophysical footprint was therefore expanded to the south and southwest into an area where glacial erosion had exposed the system vertically to a depth of over 800 meters. Surface mapping and sampling of this vertical exposure found extensive gold and copper anomalies within favorable thermally altered wall rock. Several intrusions have been identified in association with this diatreme and these features have been dated to about 186 million years, the same age as our KSM deposits.

Seabridge Chairman and CEO Rudi Fronk commented: “We believe we have identified a new, high value target that can be explored cost-effectively. We acquired Iskut because we saw clear evidence of a large porphyry system which looked to be similar in age and geology to our KSM project 30 kilometers to the east. We have now refined the location of this porphyry target, confirmed the presence of gold and copper, established its age and determined that it is within reach of surface drilling. Our team is now developing an aggressive drill testing program that we plan to commence in the coming year.”

Exploration activities by Seabridge at the Iskut Project are being conducted under the supervision of William E. Threlkeld, Registered Professional Geologist, Senior Vice President of the Company and a Qualified Person as defined by National Instrument 43-101. Mr. Threlkeld has reviewed and approved this news release. An ongoing and rigorous quality control/quality assurance protocol is employed in all Seabridge exploration campaigns. This program includes blank and reference standards. Cross-check analyses are conducted at a second external laboratory on at least 10% of the drill samples.

Seabridge holds a 100% interest in several North American gold projects. The Company’s principal assets are the KSM and Iskut Projects located near Stewart, British Columbia, Canada and the Courageous Lake gold project located in Canada’s Northwest Territories. For a full breakdown of Seabridge’s mineral reserves and mineral resources by category please visit the Company’s website at http://www.seabridgegold.net/resources.php.

ON BEHALF OF THE BOARD

“Rudi Fronk”
Chairman and CEO

Rudi P. Fronk, Chairman and CEO
Tel: (416) 367-9292   ·  Fax: (416) 367-2711
Email:  info@seabridgegold.net

NT4

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