GSN Winnemucca Chapter Meeting – March 8, 2023

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Contact: nancyjeanw@aol.com

Please join us for the GSN Winnemucca Chapter March Meeting

Wednesday, March 8, 2023

The Martin, 94 W. Railroad St., Winnemucca, NV

Food and Drinks at 6 pm; Talk at 7 pm

Speaker:  Derick Unger, VP Exploration, NevGold Corporation

 Talk: “Geology and Mining History of the Limousine Butte Project, Cherry Creek Range, Nevada”

 FOOD AND BEER SPONSOR: PREMIER DRILLING 

For more information on Premier Drilling contact James Stephens, 480-200-8300;

james@premierdrilling.com;    www.premierdrilling.com

ABSTRACT:

Geology and Mining History of the Limousine Butte Project, Cherry Creek Range, Nevada

The Limousine Butte Project is a Carlin-type gold project located in the Cherry Creek Range, 45 miles north-northwest of Ely, Nevada and 5 miles west of Cherry Creek, Nevada. NevGold Corporation acquired the project from McEwen Mining Inc. on December 14, 2020, and since has begun a robust exploration program that includes mapping, sampling, and drilling.

The gold mineralization at Limousine Butte is typical of eastern Nevada Carlin-type deposits. Gold is primarily hosted in a group of Mississippian to Devonian-aged sedimentary rocks that includes the Chainman Shale, Joana Limestone, Pilot Shale and Guilmette Limestone. Mineralization is most intensely developed as jasperoid breccias and decalcified limestone at contacts between the shales and underlying limestone units.

Exploration at Limousine Butte is ongoing, after a successful 2022 drill program that identified new mineralization at both the Resurrection Ridge and Cadillac Valley zones, additional drilling is planned for 2023. New geologic mapping and modeling has reinterpreted the structural framework of the property and is identifying additional new targets. An important aspect of the project’s structural geology and exploration targeting is understanding the of role of thrust faults in localizing mineralizing fluids and potentially concealing favorable host rocks. The thrust faults were originally identified by mapping done by Donald Adair for a master’s thesis in 1961. These thrust faults appear to emplace older dolomites of the Simonson and Sevy formations overtop the Chainman and Pilot shales. This emplacement of dolomites over the more favorable shale units is seen as an under explored aspect of the Limousine Butte Project and will be the focus of future exploration programs.

The Cherry Creek Range has seen a long history of mining. Gold was first discovered in Egan Canyon in 1861. This was followed by the discovery of silver in Cherry Creek Canyon in 1872. Mining of silver as well as tungsten continued until 1958 around the town of Cherry Creek. More recently, the Golden Butte Mine, located in the area now called Resurrection Ridge on the Limousine Butte Project, produced gold between 1989-1990 from a small open-pit heap leach operation.

The Cherry Creek Range has seen a recent resurgence in exploration activity. Including NevGold’s Limousine Butte Project, there are four active exploration projects in the area. To the southwest of Limousine Butte, Falcon Butte Minerals is actively exploring the Butte Valley Project for porphyry copper-gold and skarn type deposits. On October 2, 2022, an exploration and earn-in agreement was announced between Freeport-McMoRan and Falcon Butte for Freeport to spend up to $33MM on exploration expenditures on the Butte Valley Project. East of Butte Valley and south of Limousine Butte, Ridgeline Minerals is actively exploring their Selena Project for CRD-type silver-gold-lead-zinc mineralization. Northeast of Limousine Butte, Viscount Mining and Centerra have an $8MM earn-in agreement, announced January 6, 2021, to explore for extensions of the mineralization mined by the historical workings. This recent resurgence in exploration activity by multiple companies, and on multiple deposit-types, points to the exciting opportunities for discovery that occur at the Limousine Butte Project and the surrounding projects.

If you have any questions, contact Nancy Wolverson at nancyjeanw@aol.com or 775-770-4615