IMA reports grassroots silver find

A high-grade silver discovery in the Patagonia region of southern Argentina has IMA Exploration (IMR-V) making geological analogies between it and the Eskay Creek gold mine in northern British Columbia.

The Navidad discovery is believed to be part of a shallow subaqueous epithermal system that deposited silver enriched sulphides at or near the sea floor. IMA has identified a large mineralized system with two key features: a high-grade section measuring several hundred metres, and a lower-grade bulk-tonnage target that extends for several kilometres.

An IMA geologist discovered Navidad while on a routine site visit to investigate satellite imagery. The Navidad Hill zone contains bonanza-grade silver structures in a felsic volcanic flow-dome. In total, 43 chip samples average 6,537 grams silver per tonne, 3.5% copper and 16.6% lead. These high-grade structures are believed to represent feeders to mineralization that comprises extensive areas of sulphide replacement of unconsolidated volcanic breccias.

Replacement-style mineralization occurs in a heterolithic breccia in varying intensity over an area measuring 3.8 km long by 250 metres wide. Previously reported sampling of the mineralized breccia averages 158 grams silver and 8.9% lead. New sampling of portions of the replacement-style mineralization near the felsic flow-domes has returned up to 4,012 grams silver, 2.4% copper and 22.3% lead. This replacement mineralization with much higher silver grades appears to occur adjacent to flow-domes.

Recently completed preliminary petrographic work on surface samples indicates Navidad Hill bonanza-grade structures contain fine-grained argentite-acanthite, galena, chalcocite and lesser copper-silver-lead chlorides and oxides. The replacement-style mineralization consists almost entirely of silver bearing galena; no discrete silver minerals were identified petrographically.

Print

Be the first to comment on "IMA reports grassroots silver find"

Leave a comment

Your email address will not be published.


*


By continuing to browse you agree to our use of cookies. To learn more, click more information

Dear user, please be aware that we use cookies to help users navigate our website content and to help us understand how we can improve the user experience. If you have ideas for how we can improve our services, we’d love to hear from you. Click here to email us. By continuing to browse you agree to our use of cookies. Please see our Privacy & Cookie Usage Policy to learn more.

Close