Unnamed (northwest of Manley Hot Springs Dome)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Zn

Geographic location

Quadrangle map, 1:250,000-scale TN
Quadrangle map, 1:63,360-scale A-2
Latitude 65.0337
Longitude -150.75994
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is at an elevation of about 2,200 feet, approximately 3,000 feet northwest of Manley Hot Springs Dome. The site is at Alaska Division of Geological and Geophysical Surveys (ADGGS) sample station 97SL055A (Liss and others, 1998), near the northwest corner of section 2, T. 2 N., R. 16 W., of the Fairbanks Meridian. The location is accurate within 500 feet.

Geologic setting

Geologic description

Bedrock at the head of Little Denver Creek is mainly Lower Cretaceous sandstone, shale, and siltstone, along with less-abundant quartzite (Reifenstuhl and others, 1998). The northwestern contact of the Tertiary Hot Springs granite pluton and its hornfels aureole is 3,500 feet to the southeast.
In 1997, ADGGS collected samples (97SL055A and 97SL055C) of quartzite and black phyllitic schist from near the crest of a west-trending ridge at the head of Little Denver Creek (Liss and others, 1998). The samples contained maximum geochemical values of 4,130 parts per million (ppm) phosphorus and 296 ppm zinc. There is no record of exploration or mining at this site, but there has been extensive industry exploration around Hot Springs Dome (TN103).
Geologic map unit (-150.762409124513, 65.0332070459748)
Mineral deposit model Likely polymetallic veins (Cox and Singer, 1986; model 22c), but very little specific information regarding the mineralization.
Mineral deposit model number 22c

Production and reserves

Workings or exploration Two samples (97SL055A and 97SL055C) of quartzite and black phyllitic schist were collected by ADGGS from near the top of a west-trending ridge that forms the headwaters of Little Denver Creek (Liss and others, 1998). The samples had anomalous geochemical values of 4130 ppm P, and 296 ppm Zn (Liss and others, 1998). There is no record of exploration or mining activity at this site, but there has been extensive exploration around Hot Springs Dome.
Indication of production None

References