Asset Portfolio

Tonopah Summit, Nevada

Tonopah Summit is a low-sulfidation epithermal gold project located in Nye and Esmerelda County, Nevada. The land position includes 425 unpatented lode mining claims; and 8,500 acres of BLM land which comes with a 30-day drill permitting timeline.

The project is strategically situated to include the southern portions of the Tonopah Ag-Au District (174 Moz Ag and 1.86 Moz Au historic production) 1 and northern and eastern portions of the Divide Au-Ag district that carries a recent positive feasibility study on the Hasbrouck Project.2 

EMX land position includes key host rocks seen within Tonopah and Divide district and kilometer-scale zones of argillization, silificiation, and zones of epithermal veins with sinter/near surface silica identified in multiple areas on the property. Historic reports mention multi-gram Au and >100g/t Ag in sinter zones, which EMX has sampled for verification (assays pending).

Keys targets are Tonopah-style high-grade underground mineable epithermal veins beneath syn- to post-mineral cover. The potential for continuation of Main Tonopah Vein to be offset onto EMX property is likely given regional right-lateral faulting, typical of the Walker Lane District, and the fact the Main Tonopah vein is cut by Halifax fault. Additional target exists in the south for a bulk-tonnage, surface minable disseminated Au-Ag hosted in shallow hydrothermal cells associated with widespread clay/silica and sinter.

1USGS, 2019. Petrographic, Geochemical, and Geochronologic Data for Cenozoic Volcanic Rocks of the Tonopah, Divide, and Goldfield Mining Districts, Nevada. Data Series 1099.

2West Kirkland Mining 43-101, 2016. Technical Report and Updated Preliminary Feasibility Study: Hasbrouck and Three Hills Gold-Silver Project Esmeralda County, Nevada. Effective Date: September 1, 2016. Qualified Person: Thomas Dyer.

*EMX has not performed sufficient work to verify the published historical drill data, and these data cannot be verified as compliant with NI 43-101 standards. Although these samples should not be relied upon until they can be confirmed, EMX believes they are reliable and relevant.



Geology Click to Enlarge


banded silica Click to Enlarge
Chalcedonic silica flooding Click to Enlarge
quarts sulfide vein Click to Enlarge
reed casts in sinter Click to Enlarge