Unnamed (near Ella Point)

Occurrence, Undetermined

Commodities and mineralogy

Main commodities Zn
Ore minerals pyrite; sphalerite

Geographic location

Quadrangle map, 1:250,000-scale KC
Quadrangle map, 1:63,360-scale B-3
Latitude 55.497
Longitude -130.982
Nearby scientific data Find additional scientific data near this location
Location and accuracy The approximate location of this occurrence is on the west shore of Behm Canal near Ella Point. The site is in section 33, T. 73 S., R. 95 E., of the Copper River Meridian. It corresponds to loc. 51 in Elliott and others (1978). The location probably is accurate within about 0.5 mile.

Geologic setting

Geologic description

The country rocks near Ella Point consist of pelitic and quartzofeldspathic paragneiss that is intruded by an elongate stock of Cretaceous leucocratic granodiorite and quartz monzonite (Berg and others, 1988). The paragneiss represents marine argillaceous and clastic strata that underwent regional high-grade regional metamorphism in Cretaceous or Tertiary time. The premetamorphic age of the strata is uncertain. Most are probably Paleozoic, but some may be as young as Mesozoic and some as old as Precambrian (Berg and others, 1988; Gehrels and others, 1990; Crawford and others, 2000).
According to Berg and Cobb (1967, p. 182), 'A zinc-bearing lode that may be similar to the one at Moth Bay [KC086] is on the west shore of Bradfield Canal near Ella Point, where pyrite and sphalerite reportedly replace sericitic schist.' No other information about this occurrence has been made public.
Geologic map unit (-130.983699039847, 55.4966595396718)
Mineral deposit model Sedimentary exhalative Zn-Pb? (Cox and Singer, 1986; model 31a)
Mineral deposit model number 31a?

Production and reserves

Indication of production None

Additional comments

Site is in Misty Fiords National Monument Wilderness.

References