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Contact: Sergey606@gmail.com

The GSN Elko Chapter invites you to their November meeting!

Thursday, November 20, 2025

Western Folklife Center, 501 Railroad St., Elko, NV

 Food and Drinks @ 6 p.m., Talk @ 7 p.m.

FOOD & BEER SPONSOR:

ALFORD DRILLING

Speaker: Alex Davidson

 Title: “Exploration update on developing high grade Ag trends at Hycroft”  

Abstract: Work completed in 2023-2024 has further defined higher grade silver mineral trends within the Brimstone and Vortex ore bodies. Trend orientation, metal zonation, vein density, alteration, and Au-Ag ratios indicate these trends likely have separate fluid sources. Brimstone mineralization is dominantly vein hosted with remarkably high Ag-Au ratios (>3000:1), has increased Cu, Pb, Zn ratios, and petrographic work indicates the dominant ore minerals are tetrahedrite and naumannite. Vortex mineralization is tied more closely to a flooding event influenced by pre-mineral low angle (35°- 40°) structural fabric resulting in a broader zone of mineralization. Dominant silver minerals identified at Vortex are miargyrite and selenostephanite; Ag-Au ratios >150:1 are observed. Petrography suggests that very fine-grained gold is contained in arsenical and antimonial pyrite overgrowth bands, on earlier, coarser grained pyrite; exceptionally fine grained arsenopyrite is also identified. Electrum has not been identified at either Brimstone or Vortex.

Ongoing work on structural interpretation, alteration models, down hole vein orientations, geochemical analysis, petrography and geophysics will continue to refine the understanding of these trends as well as identify targets moving forward.

Please contact Elko Chapter President, Sergey Konyshev if you have any questions. Sergey606@gmail.com