Unnamed (upper Little Minook Creek)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Mn
Ore minerals rhodochrosite or rhodonite

Geographic location

Quadrangle map, 1:250,000-scale TN
Quadrangle map, 1:63,360-scale B-1
Latitude 65.45183
Longitude -150.00386
Nearby scientific data Find additional scientific data near this location
Location and accuracy This manganese lode corresponds to location 12 of Cobb (1972). It is on Little Minook Creek 3 miles upstream from the junction of Minook Creek, near the upstream end of the Little Minook Creek placer operations (TN066). The site is in the north half of section 10, T. 7 N., R. 12 W., of the Fairbanks Meridian (Burand and Saunders,1966). This location is accurate within 2000 feet.

Geologic setting

Geologic description

The bedrock in Little Minook Creek consists of Triassic Rampart Group mafic intrusive and volcanic rocks and sedimentary rocks (Reifenstuhl and others, 1997 [RI 97-15a]). A manganese deposit is at the upstream end of the Little Minook Creek placer operations (TN066) (Burand and Saunders,1966; Cobb, 1972). The deposit crops out along the creek, and contains rhodochrosite or rhodonite. A stream-sediment sample collected a short distance upstream from this location contained no anomalous metals (Burand and Saunders,1966).
Geologic map unit (-150.00637916947, 65.4513622615084)
Mineral deposit model Epithermal Mn (Cox and Singer, 1986; model 25g) or Replacement Mn (Cox and Singer, 1986; model 19b).
Mineral deposit model number 25g or 19b

Production and reserves

Workings or exploration A stream-sediment sample collected a short distance upstream from this location contained no anomalous metals (Burand and Saunders, 1966).
Indication of production None

References