Summary

Mine Type	Open Pit
Stage	Residual leach
Commodities	Gold
Mining Method	Truck & Shovel / Loader
Production Start	...
Snapshot	The Emigrant/Rain mine is part of the Carlin complex. The Emigrant open pit ceased mining operations in December 2018 while residual leaching of gold continues. Emigrant is producing incidental ounces. As at December 2024, the Emigrant project is moved to closure. The Emigrant Leach Facility is now being decommissioned and moving into closure. Rain site is closed.

Deposit type

• Carbonate hosted
• Carlin-type
• Hydrothermal

Summary:

The mineral deposits along the Carlin Trend form a suite of deposits known as Carlin-type. Carlin deposits comprise stratabound disseminated gold mineralization hosted by Silurian-Devonian carbonate rocks that have been metamorphosed to varying extents. The deposits are hydrothermal in origin and are usually structurally controlled.

Gold mineralization at the Emigrant deposit is located along the flanks of the Emigrant antiform with the majority of the mineralization being concentrated on the western limb in a shallow, southwestdipping tabular orebody located at the contact between siltstones of the Mississippian Webb Formation and limestones of the Devonian Devils Gate Formation.

Major lithologic units recognized in the Emigrant deposit from surface mapping, drill hole logging, and litho-chemistry include; Tertiary Indian Wells (Tiw), Tertiary Elko (Te), Mississippian Chainman (Mc), Mississippian Webb (Mw), Devonian Woodruff (Dw), Devonian Devils Gate (Ddg) Formations, and the Devonian Nevada Group (Dng).

Detailed surface mapping and drill hole interpretation indicates that there are a series of N10ºW to N10ºE structures present at Emigrant (Emigrant Fault system). The Emigrant Fault appears to bound the hanging wall to the deposit and places the Mississippian Webb Formation (east side) against the Pennsylvanian Tonka, Mississippian Chainman and Devonian Woodruff formations (west side). Emigrant demonstrates the typical Carlin Trend deposit geochemical signature in that fine-grained gold mineralization is associated with Au, As, Sb, and Hg. Gold occurs as elemental gold encapsulated in quartz as well as in submicrometer substitutions in arsenian rims over pyrite.

Mining Methods

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Comminution

Crushers and Mills

Processing

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Commodity Production

Personnel

Job Title	Name	Profile	Ref. Date
.......................	.......................		Apr 25, 2025
.......................	.......................		Apr 25, 2025
.......................	.......................		Apr 24, 2025

Employees	Year
......	2024
......	2023
......	2022
......	2021
......	2020
......	2019
......	2018
......	2017