Garfield County, UTAH

Colt Mesa Project

The Colt Mesa copper mine is located in Garfield County, south-central Utah. The Property covers the past producing Colt Mesa mine, and is accessed by a gravel roads from Boulder, the closest community with services and support.

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Project Highlights

Property covers the past producing Colt Mesa mine, a copper deposit with associated cobalt, zinc, nickel and molybdenum.

Reported 1975 grab sampling with peak values of 29.50 % copper (Cu), 0.67 % cobalt (Co), 3.30 % zinc (Zn), 0.27 % nickel (Ni), and 0.17 % molybdenum (Mo)

Recent sampling (CM-18-01) by Company personnel, on a site visit with the vendor of the property, returned values of 0.88 percent (%) copper (Cu), 2.31% cobalt (Co), 9.31 % zinc (Zn), +1.00 % nickel (Ni), and 0.29 % molybdenum (Mo), over a 0.3 meter chip sample.

Excellent year-round logistics, road accessible. No reclamation issues from historic mining activity.

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History

 Ore Chute & Grizzly from the historic Colt Mesa Mine  Photo: Glacier Lake Res. Ltd.

Ore Chute & Grizzly from the historic Colt Mesa Mine
Photo: Glacier Lake Res. Ltd.

The Colt Mesa deposit was discovered in 1968 and was mined intermittently from 1971 to 1974. While little data survived from the copper mining activities, a 1975 Master Thesis (“G.M. Collings, 1975, Geology and Geochemistry of the Colt Mesa Copper Deposit”) completed at the University of Utah, is an invaluable source of information on the geology and mineralization at the Colt Mesa mine.

Mining was focused on copper mineralization and it is the belief of the Company that the mine and surrounding area have never been systematically explored for cobalt mineralization. 

 

Acquisition Opportunity

The Colt Mesa mine area was sterilized from exploration and development in 1996, when President Clinton created the “Grand Staircase Escalante National Monument”, However, the size was recently reduced by Presidential proclamation in December 2017, which put Colt Mesa outside the new boundaries of the restructured national monument.

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Geology and Mineralization

Copper mineralization is strata-bound at the contact of a paleochannel deposit of two distinct sedimentary units. The mineralized zones are tabular in form and ore was extracted by trackless, room-and-pillar mining.

Collings (1975) reports: “The primary ore mineral is chalcopyrite which is intimately associated with minor amounts of sphalerite. Chalcocite, bornite, covellite and digenite are common in the ore zone. The Colt Mesa deposit is also enriched in U, V, Ag, Mo, Ni, Co, and Pb. The ore minerals fill pore spaces and replace the kaolinite matrix of the host rock.”

Recently a site visit was made to the property, and sampling by a Company geologist include the following results:

 
 
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All of the above samples were taken at surface, near the adits, although the underground working were examined. Samples CM-18-01, 02, and 03, were chip sampled from the same location over a width of 1.35 meters, averaging 0.52 % Cu, 0.83 % Co, 6.52 % Zn, 0.79% Pb, and 0.17 % Mo. Sample CM-18-01 and CM-18-03 had conspicuous “cobalt bloom”, whereas CM-18-02 was barren, unmineralized sandstone. Sample CM-18-04 was a grab samples of bright, copper oxide float from the dump. The Colt Mesa is renown, for brilliant, multicolored copper oxides, attributed to the association with cobalt and molybdenum.’

The Master Thesis (*1) reports, a table of eight samples taken (1975) from the underground workings as follows:

 
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