Gemini

Prospect, Active

Commodities and mineralogy

Main commodities Au; Cu
Ore minerals chalcopyrite; gold; pyrite; pyrrhotite
Gangue minerals albite; chlorite; epidote; garnet

Geographic location

Quadrangle map, 1:250,000-scale MH
Quadrangle map, 1:63,360-scale B-6
Latitude 63.2631
Longitude -146.7012
Nearby scientific data Find additional scientific data near this location
Location and accuracy The Gemini prospect is located on a northwest-aligned ridge about 2.0 miles east of the West Fork Maclaren River within the Stellar Project; 0.5 mile south-southeast of the center of section 13, T. 19 S., R. 5 E., of the Fairbanks Meridian. This location is accurate to within about 100 feet.

Geologic setting

Geologic description

The Gemini prospect, part of the Stellar Project area, appears to be hosted primarily within Triassic volcanic rocks, specifically andesites and basalts. The mineralization is characterized by disseminated chalcopyrite and gold (P. St. George, Chief Exploration Officer, Millrock Resources Inc., oral communication, 2014).
This newly discovered prospect was defined in August of 2013, the result of a wide-spaced, property-wide soil sampling program. The Gemini 420 parts per million (ppm) copper-in-soil anomaly, while variable in outline, averages approximately 1.0 kilometer by 1.6 kilometers. Anomalous gold-in-soil results tend to occur coincident with elevated copper values with gold assays typically ranging from 0.150 – 0.250 ppm gold (Millrock Resources Inc., 2014).
Between 2011 and 2013 field seasons, Millrock conducted rock, soil, stream sediments sampling, and an airborne geophysical and spectrometry survey (P. St. George, Chief Exploration Officer, Millrock Resources Inc., oral communication, 2014).
Geologic map unit (, )
Mineral deposit model Porphyry Cu-Au? (Cox and Singer, 1986, model 20c)
Mineral deposit model number 20c?
Age of mineralization Triassic or younger based on age of host rock.
Alteration of deposit Disseminated chalcopyrite and gold with albite, chlorite, epidote, and garnet alteration minerals (P. St. George, Chief Exploration Officer, Millrock Resources Inc., oral communication, 2014).

Production and reserves

Workings or exploration
This newly discovered prospect was defined in August of 2013, the result of a wide-spaced, property-wide soil sampling program. The Gemini 420 parts per million (ppm) copper-in-soil anomaly, while variable in outline, averages approximately 1.0 kilometer by 1.6 kilometers. Anomalous gold-in-soil results tend to occur coincident with elevated copper values with gold assays typically ranging from 0.150 – 0.250 ppm gold (Millrock Resources Inc., 2014).
Between 2011 and 2013 field seasons, Millrock conducted rock, soil, stream sediments sampling, and an airborne geophysical and spectrometry survey (P. St. George, Chief Exploration Officer, Millrock Resources Inc., oral communication, 2014).
Indication of production None
Reserve estimates None.
Production notes None.

References