Copper King (Sonora Silver), Idaho

  LOCATION Shoshone County, Idaho, near the town of Mullan
  TARGET: Disseminated, stratabound, silver-rich copper sulfide deposits within the Proterozoic Revett Formation; Coeur d'Alene vein-type silver-lead-zinc-copper deposits.
  COMMODITY: Ag-Cu, Ag-Zn-Pb-Cu
  LAST UPDATED: November 1, 2015

Project Highlights

  • Copper King / Sonora Silver is a strategically positioned property surrounded by a large patented claim block primarily controlled by Hecla Mining. Hecla’s claims include their Lucky Friday-Gold Hunter underground silver mining complex near Mullan, Idaho, immediately to the south of the claim block, with past production of over 140 million ounces of silver (Hecla Mining Company website, 2011). The productive deposits near Burke, Idaho, primarily valuable for their silver lead and zinc, but including significant copper and gold locally, are situated just northwest of the claim block. Overall, past production in the Copper King/ Sonora Silver property area exceeds 340 million ounces of silver (Hecla Mining Company website, 2011).
  • Three target areas for drill testing have been identified and selected for permitting and exploration purposes. The drilling will target the highly favorable Revett host formation at depth beneath the overlying Wallace and St. Regis Formations in an area that has never been tested for stratabound copper-silver. One site is located to also test near-surface tetrahedrite stockworks hosted by the St. Regis formation for Coeur d’Alene vein style mineralization.


The Copper King / Sonora Silver property consists of 50 unpatented lode claims in Shoshone County, Idaho. The claims are controlled 100% by Silver Predator. The project is situated at the eastern end of the world-class Coeur d'Alene Silver Mining District, and at the south end of the Revett Silver-Copper Belt. At over 1.2 billion ounces of historic silver production, the Coeur d' Alene District is the largest documented silver producing region in the world (Idaho Bureau of Mines and Geology website, 2012). In addition, the known bedded silver-copper resources in the adjacent Revett Belt, amount to well over 500 million ounces of silver and 4 billion pounds of current resources and past production (Mines Management Inc. and Revett Minerals Corporation websites, 2011).


The Silver-Copper Belt in Montana hosts world-class resources at the Rock Creek, Montanore and Troy projects. Silver Predator management believes that the Copper King / Sonora Silver Project in Idaho represents one of the best untested target areas for the bedded copper-silver style of mineralization, and unlike the deposits in Montana, is situated in an active mining district with over 130 years of mining history and infrastructure. Where structurally complicated, the stratabound copper-silver deposits are known to be associated with high-grade vein-type deposits. Excellent potential also exists for this type of mineralization at the Copper King/ Sonora Silver property.


The Copper King / Sonora Silver project is the subject of an NI 43-101 compliant technical report with an effective date of January 1, 2008, by John F. Childs, Ph.D., P. Geo., of Childs and Associates, LLC. A copy of the technical report on the Copper King/ Sonora Silver/Sonora Silver project is available for download below.


Click here to view the Copper King/ Sonora Silver Technical Report

Mineral Resources

There are no current resources or reserves on the Copper King / Sonora Silver Property. Only one drillhole has been completed to date within the claim block, however, several occurrences of stratabound as well as structurally-controlled mineralization are known within the block, exposed in old prospects.

Geology and Mineralization

The Revett Silver-Copper Belt is a north-south corridor nearly 170 kilometers long and 90 kilometers wide that hosts disseminated, stratabound, silver rich, copper sulfide deposits within the Proterozoic Revett Formation. There are numerous prospects of bedded copper-silver mineralization in the Belt, with some of the better grade mineralization located adjacent to, and on strike with, the Copper King/ Sonora Silver Property. Some of these deposits are relatively high grade for the deposit type (1 to 3% copper and 3 to 6 oz/ton silver) and were historic producers (i.e., Snowstorm and National Mines; USGS PP. 62, 1908). The Coeur d'Alene veins exploited in the vicinity of the Project area are thought to be metamorphic in origin and are known to persist through a remarkable vertical range. They may result at least in part from the remobilization of the stratabound mineralization.

Historical Exploration

The historic Mammoth, Champion, Military Gulch and Sonora Gulch copper-silver prospects occur within the Copper King / Sonora Silver property limits. The Military Gulch area east of the Project area was sampled, mapped and drilled (two holes) for stratabound copper-silver in 1980 through 1982 by U.S. Borax. Borax's work proved the presence of bedded copper-silver mineralization immediately down dip from mineralization exposed in Military Gulch. This bedded copper-silver mineralization projects at depth onto the Silver Predator claims to the north and west, and provides a compelling concealed target concept that has never been tested. Vein-type copper-silver occurrences at the Mammoth, Champion and Copper King / Sonora Silver workings are interpreted to be favorable indicators of leakage from subjacent bedded mineralization. The historic Copper King/ Sonora Silver # 1 and #2 mines, which exploited Coeur d'Alene vein-type deposits, are located near the south boundary of the property on adjacent patented claims and project onto the Silver Predator claim block.

Current Work

Silver Predator has completed the permitting process with the United States Forest Service for plans for future drill exploration of the Copper King/Sonora Silver Property. The property is also available for lease or option to purchase.




Mark C. Shutty, CPG, a Consultant to the Company, is the Qualified Person as defined under National Instrument 43-101 and has reviewed and verified the information presented above.

Taylor Mine & Mill
Copper King (Sonora Silver)
Treasure Hill