Prospect, Probably inactive

Commodities and mineralogy

Main commodities Cu
Other commodities Ag; Au
Ore minerals bornite; chalcopyrite; malachite
Gangue minerals epidote; quartz

Geographic location

Quadrangle map, 1:250,000-scale MH
Quadrangle map, 1:63,360-scale A-6
Latitude 63.2412
Longitude -146.5383
Nearby scientific data Find additional scientific data near this location
Location and accuracy The Lakeview prospect is at an elevation of about 3,150 feet on a knob just southeast of Hidden Lake in the valley of the Maclaren River. The prospect is about 500 feet northeast of the center of section 26, T. 19 S., R. 6 E., Fairbanks Meridian. The prospect corresponds to locality A20 of Kurtak and others (1992); it is Kardex site number KX68-45 (Heiner and Porter, 1972).

Geologic setting

Geologic description

The rocks at the Lakeview prospect consist mainly of amygdaloidal basalt of Late Triassic age. The basalt is altered propylitically, and Kurtak and others (1992) speculated that local occurrences of copper minerals at the prospect are associated with a buried (?) shear zone.
The Lakeview (or Lake View) claim of A.R. Ghezzi was located for gold, silver, and copper in 1955 (Saunders, 1957; Heiner and Porter, 1972). There are at least two copper-bearing zones 1 to 5 feet wide about 200 feet apart at the prospect. The mineralized zones consist of quartz-epidote veins that contain bornite, chalcopyrite, and, on the surface, malachite. Copper minerals also occur as amygdule fillings.
A grab sample collected by the U.S. Bureau of Mines assayed 0.19 ounce of silver per ton and 2.88 percent copper; another sample contained 0.26 ounce silver per ton and 1.88 percent copper (Kurtak and others, 1992, p. 125-126). Although Mr. Ghezzi located his claims for gold, silver, and copper, the Bureau found almost no gold at the property.
Geologic map unit (-146.540563121118, 63.2407683973316)
Mineral deposit model Cu-Ag quartz -epidote veins typical of propylitically altered basalt. Basaltic Cu (Cox and Singer, 1986; model 23).
Mineral deposit model number 23
Age of mineralization Probably Cretaceous or early Tertiary (see MH060).
Alteration of deposit Propylitic alteration of basalt.

Production and reserves

Workings or exploration Small pits were excavated by A.R. Ghezzi in 1955.
Indication of production Undetermined
Production notes Possible small production during prospecting.