|Quadrangle map, 1:250,000-scale||MH|
|Quadrangle map, 1:63,360-scale||A-6|
|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).|
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.|
|Workings or exploration||Small pits were excavated by A.R. Ghezzi in 1955.|
|Indication of production||Undetermined|
|Production notes||Possible small production during prospecting.|
Heiner, L.E., and Porter, Eve, 1972, Alaska Mineral Properties, volume 2: University of Alaska, Mineral Industry Research Laboratory Report 24, 669 p.
Kurtak, J.M., Southworth, D.D., Balen, M.D., and Clautice, K.H., 1991, Mineral investigations in the Valdez Creek Mining District, south-central Alaska: U.S. Bureau of Mines Open-File Report 1-92, 658 p., 2 sheets, scale 1:250,000.
Nokleberg, W.J., Albert, N.R.D., Bond, G.C., Herzon, P.L., Miyaoka, R.T., Nelson, W.H., Richter, D.H., Smith T.E., Stout, J.H., Yeend, Warren, and Zehner, R.E., 1982, Geologic map of the southern Mount Hayes quadrangle, Alaska: U.S. Geological Survey Open-File Report 82-52, 27 p., 1 sheet,scale 1:250,000.
Saunders, R.H., 1957, The Ghezzi copper prospect on the Maclaren River, Mt. Hayes quadrangle: Alaska Territorial Department of Mines Prospect Evaluation 68-5, 3 p.
|Reporters||W.T. Ellis (Alaska Earth Science), C.C. Hawley (Hawley Resource Group), and W.J. Nokleberg (USGS)|
|Last report date||7/31/2001|