Gregg Canyon, Nevada
The Gregg Canyon Project is located in Humboldt County, Nevada. There are 22 claims (440 acres) covering a zone multiple breccia pipes, skarn and jasperoid over a distance of 2000 meters in diameter. Mineralization extends on to private land to the north.
A large footprint of alteration extends over an area of ~16 miles2 and affects Paleozoic limestone, chert and shale, Laramide(?) granite, Tertiary volcanics and porphyry dikes. Alteration includes skarn, quartz-sericite-pyrite alteration of intrusive and extrusive rocks, late stage quartz veining, and jasperiodal replacement of sediments.
Cordero completed district wide magnetic survey coupled with a geochemical stream survey in 1966. This work identified a large copper-moly anomaly associated with a magnetic anomaly. An exploration program in 1967-69 included mapping, 125 shallow airtrack holes and 7 deep core holes. In 1972-73 Amax JVed the property and drilled an additional 3 core holes. This work identified a near-surface copper oxide cap with a molybdenum-copper resource at depth. The near surface copper oxide cap has potential for 50 million tons grading 0.3% copper. The deeper moly-copper resource defined by 9 wide spaced holes suggest approximately 80 million tons grading 0.08% moly and 0.05% copper.
Additional breccia pipe targets grading up to 2% copper at surface remain untested. In 1998 North Mining confirmed the existence of a significant alteration footprint with associated gold and silver mineralization. No testing of these anomalies have occurred.
The potential for a cluster of mineralized porphyries and associated peripheral base and precious metal mineralization should be considered for this area.