Manning Ventures Inc. has concluded the gravity survey component of its phase one 2024 exploration initiative at the Copper Hill Project within the Walker Lane Trend.
The initial phase of the exploration program encompassed geologic mapping, soil geochemistry analysis, and the recently finished property-wide gravity survey. The findings from this survey are currently en route for comprehensive interpretation, including a detailed report integrating gravity survey data, ground magnetic data, and existing geological information. The results will be amalgamated with historical data to delineate target zones suitable for core and reverse circulation drilling.
The gravity geophysical program will help in assessing the extent of intrusive and limestone rocks. The sample locations highlight density variations among different lithologies, thus facilitating the identification of various rock types and fault zone orientations beneath the surface.
Copper Hill is in a quartz monzonite porphyry of the Jurassic Age, which intrudes the surrounding Luning Limestone of the Triassic Age and intersects several intrusive dikes. Zones of copper and gold-bearing skarn mineralization, associated with the porphyry, manifest along the intrusive-limestone contacts and within fault zones within the intrusive.
Situated within the prolific Walker Lane trend, Copper Hill occupies a spot in one of the top jurisdictions for precious metals mining. The historical mineral endowment within Walker Lane comprises 50 million ounces of gold, 700 million ounces of silver, and 4 million tons of copper.
Copper Hill boasts copper-gold-molybdenum mineralization in porphyry and skarn deposits, spanning 2.3 square miles, encompassing 66 mineral claims, about 22 miles north of Hawthorne. The project is a quartz monzonite porphyry and Luning Limestone, 33 miles east of the Yerington Copper District, which hosts prominent deposits like the Yerington Copper Mine, Ann Mason Deposit, and Pumpkin Hollow Mine, among others.
Historically, Copper Hill witnessed high-grade copper extraction from underground shafts, tapping into skarn and copper mineralization at the Copper Mountain Mine. Operations between 1914 and 1926 yielded an estimated 1,000,000 pounds of copper from shallow underground workings with a shipping grade ranging from 3.5 to 11 percent copper.
The mineralizing system at Copper Hill forms a topographic high surrounded by younger volcanic rocks. Identified mineralization includes bornite, chalcocite, chalcopyrite, chrysocolla, gold, silver, and molybdenite.
The area underwent exploration between 1959 and 1979 by Idaho Mining Corp. and Walker-Martel, encompassing ground geophysics, underground mapping, prospecting, and approximately 6000 feet of Rotary drilling. Subsequent ground magnetics conducted in 2007 and rock sampling revealed notable copper and gold values.
The primary target pursued at Copper Hill is a porphyry-styled copper-molybdenum-gold deposit.
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