Rex (Anvil Mountain)

Prospect, Inactive

Commodities and mineralogy

Main commodities Au
Ore minerals gold
Gangue minerals calcite

Geographic location

Quadrangle map, 1:250,000-scale NM
Quadrangle map, 1:63,360-scale C-1
Latitude 64.5558
Longitude -165.3467
Nearby scientific data Find additional scientific data near this location
Location and accuracy This Rex lode prospect is at an elevation of about 550 feet on the southeast flank of Anvil Mountain, several hundred feet west of and above Dry Creek. The map location is just inside the north-central edge of section 7, T. 11 S., R. 33 W., Kateel River Meridian. It is locality 52 of Cobb (1972 [MF 463], 1978 [OFR 78-93]).

Geologic setting

Geologic description

Cathcart (1922) reported several tunnels driven on calcite veins less than a foot thick in marble at this prospect. Although Cathcart did not observe quartz or sulfides, the owner reported that assays from one vein ran 0.15 to 0.2 ounce of gold per ton.
Geologic map unit (-165.349304145374, 64.5550356940107)
Mineral deposit model Calcite veins in marble.
Age of mineralization Mid-Cretaceous or younger; veins cross cut marble metamorphosed in the mid-Cretaceous.

Production and reserves

Workings or exploration Several tunnels, 25 to 180 feet long, were driven on this deposit.
Indication of production None


MRDS Number A012851


Reporters C.C. Hawley and Travis L. Hudson
Last report date 7/10/2000