Lois Dome

Occurrence, Inactive

Commodities and mineralogy

Main commodities Mn
Ore minerals psilomelane

Geographic location

Quadrangle map, 1:250,000-scale CO
Quadrangle map, 1:63,360-scale C-3
Latitude 67.72
Longitude -142.78
Nearby scientific data Find additional scientific data near this location
Location and accuracy Location plotted is locality 4 of Barker (1981, p. 33), about 1 mi (1.6 km) northeast of Lois Dome summit; located to within 2 mi (3.2 km).

Geologic setting

Geologic description

One inch (25.4 mm) vein of psilomelane in red ferruginous argillite. Minor gold values reported in a manganiferous pebble from this same locality; Mn oxide common in heavy mineral concentrates (Barker, 1981, p. 38).
Geologic map unit (-142.782706429165, 67.7197304316965)
Mineral deposit model Lode

Production and reserves

Indication of production None

Additional comments

See MAS/MILS Sequence number 0020330011 (USBM, 1995).