Hyder Skookum

Prospect, Inactive

Commodities and mineralogy

Main commodities Cu
Ore minerals arsenopyrite; chalcopyrite; pyrite; pyrrhotite
Gangue minerals calcite; quartz

Geographic location

Quadrangle map, 1:250,000-scale BC
Quadrangle map, 1:63,360-scale A-1
Latitude 56.011
Longitude -130.036
Nearby scientific data Find additional scientific data near this location
Location and accuracy The Hyder Skookum prospect, in Section 36 near its southern boundary, is at an elevation of about 3150 feet on the southeast wall of Skookum Creek, and about hundred or so feet above the creek (Elliott and Koch, 1981, p. 18, loc. 76). The location is accurate within about 0.2 mile.

Geologic setting

Geologic description

The country rocks in the area of this prospect are pelitic metasedimentary and subordinate andesitic (greenstone) metavolcanic strata of the Jurassic or older Mesozoic Hazelton Group, which is underlain and locally intruded by the Triassic Texas Creek Granodiorite (Smith, 1977; Koch, 1996).
Buddington (1929, p. 72) describes two types of deposits at this site. One deposit is a sulfide replacement mass in somewhat schistose greenstone near the contact of a quartz porphyry dike. The mass consists of pyrrhotite and a little chalcopyrite and arsenopyrite. Some sulfides also are disseminated in quartz in the same zone. The other type of deposit comprises two parallel quartz veins up to 7 feet thick that locally form breccias with the quartz porphyry or greenstone country rocks. Some of the country rock fragments in the breccias are impregnated with pyrite and a stringer in the greenstone carries a little disseminated sulfide. Surface exposures of the veins carry a little calcite but are mostly barren of sulfides.
Geologic map unit (-130.037704300667, 56.010706066742)
Mineral deposit model Polymetallic veins (Cox and Singer, 1986; model 22c).
Mineral deposit model number 22c
Alteration of deposit Greenstone country rock and fragments of country rocks in breccias are partly replaced by sulfides.

Production and reserves

Workings or exploration Deposit was explored by an open cut, probably in the 1920s.
Indication of production None