Unnamed (in the Yenlo Hills)

Occurrence, Active

Commodities and mineralogy

Main commodities Au; Cr; Ni; unidentified PGE
Ore minerals arsenopyrite; pyrite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale TL
Quadrangle map, 1:63,360-scale A-3
Latitude 62.179
Longitude -151.236
Nearby scientific data Find additional scientific data near this location
Location and accuracy This site is located in a drainage bottom in the southeast quarter of Section 11, T. 24 N., R. 11 W., of the Seward Meridian. It is approximately two and a half miles west of TL071 at the north end of the Yenlo Hills.

Geologic setting

Geologic description

Diamond Gold Corporation reports a discovery of gold-rich arsenopyrite veins that average 0.10 oz/ton gold and 2 oz/ton silver (company press release, 10/14/98). Trenching exposes the one vein in a 400-foot-long zone (width not specified). They indicate the mineralization is related to the 'Hudson Stock', a gabbro body which returned assays of anomalous nickel, chromite and platinum-group-elements (values not released). The ultramafic body, which intrudes Mesozoic marine sedimentary rocks (KJs, Reed and Nelson, 1980), produced extensive hornfels areas with stockwork quartz veinlets (C.C. Hawley, oral communication).
Geologic map unit (-151.238236243712, 62.1784664507547)
Alteration of deposit Some clay gouge, with pyrite and quartz, is reported in a fault zone in the sedimentary rocks.

Production and reserves

Workings or exploration Trenching, rock chip sampling and mapping by Diamond Gold Corporation were conducted during 1998. They indicate the mineralization is related to the 'Hudson Stock', a gabbro body which returned assays of anomalous nickel, chromite and platinum-group-elements (values not released).
Indication of production None

References