Margot Creek Copper

Occurrence, Inactive

Commodities and mineralogy

Main commodities Cu; Mo
Ore minerals chalcopyrite; molybdenite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale MK
Quadrangle map, 1:63,360-scale B-5
Latitude 58.2719
Longitude -155.4351
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is at an elevation of about 2,200 feet in the southern headwaters of Margot Creek. The occurrence is in the SW1/4 sec. 13, T. 22 S, R. 38 W., of the Seward Meridian. This location is accurate within one-quarter mile.

Geologic setting

Geologic description

This occurrence consists of pyrite- and chalcopyrite-bearing quartz veins at the propylitzed margin of a Tertiary, hypabyssal stock (Riehle and others, 1993). The veins grade inward to poorly developed stockworks having veinlets of chalcopyrite and molybdenite in the potassic altered core of the pluton. The maximum length of the exposed area of the core of the pluton is about 110 yards.
Geologic map unit (-155.437169655463, 58.2711972722818)
Mineral deposit model Porphyry copper-molybdenum (Cox and Singer, 1986; model 21a).
Mineral deposit model number 21a
Age of mineralization Tertiary or younger; the pyrite- and chalcopyrite-bearing quartz veins cut a Tertiary hypabyssal pluton.
Alteration of deposit Propylitic alteration grading inward to potassic alteration in the core of the stock.

Production and reserves

Indication of production None

Additional comments

This occurrence is in the Katmai National Monument.

References