Alaska-Premier

Prospect, Inactive

Commodities and mineralogy

Main commodities Ag; Au; Cu; Pb; Zn
Ore minerals arsenopyrite; chalcopyrite; galena; pyrite; pyrrhotite; sphalerite; tetrahedrite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale BC
Quadrangle map, 1:63,360-scale A-1
Latitude 56.026
Longitude -130.042
Nearby scientific data Find additional scientific data near this location
Location and accuracy
The Alaska-Premier prospect is in Section 25 at an elevation of about 1340 feet, approximately 0.2 mile southwest of Daly Creek (Elliott and Koch, 1981, p. 17, loc. 67). The location is accurate to within about 0.1 mile.
Also see Additional Comments field, below.

Geologic setting

Geologic description

The country rocks in the area of the Alaska-Premier prospect are pelitic metasedimentary and subordinate andesitic (greenstone) metavolcanic strata of the Jurassic or older Mesozoic Hazelton Group; the Triassic Texas Creek Granodiorite, which underlies and locally intrudes the Hazelton; the Eocene Boundary Granodiorite, which intrudes the Hazelton and Texas Creek rocks; and still-younger Tertiary lamprophyre dikes, which cut all the other rocks (Smith, 1973, 1977, Koch, 1996).
The deposit (Buddington, 1925, p. 74, 78-79; 1929, p. 85-86) is in greenstone, slate, and graywacke country rocks. It consists of sulfide-bearing quartz veinlets in shattered zones in three sheets of altered 'felsite,' which may be either quartz porphyry sills or a facies of the greenstone. The veins contain pyrite, sphalerite, galena, pyrrhotite, and chalcopyrite; selected samples reportedly assayed as high as 35 oz Au per ton. A 3-foot thick mineralized shear zone in a felsite sheet contains disseminated (?) pyrite, galena, sphalerite, chalcopyrite, tetrahedrite, pyrrhotite, and arsenopyrite. Assays of some of the mineralized felsite showed about 0.097-0.145 oz Au and about 1.0 oz Ag per ton.
Lead-isotope studies of galena from the Alaska-Premier prospect (Maas and others, 1995, p. 254) indicate that the deposit is Jurassic in age, contemporaneous, at least in part, with island-arc volcanism in Hazelton time (Alldrick, 1993).
Geologic map unit (-130.043704452876, 56.0257056492832)
Mineral deposit model Polymetallic veins (Cox and Singer, 1986; model 22c).
Mineral deposit model number 22c
Age of mineralization Lead-isotope studies of galena from the Alaska-Premier prospect (Maas and others, 1995, p. 254) indicate that the deposit is Jurassic in age, contemporaneous, at least in part, with island-arc volcanism in Hazelton time (Alldrick, 1993).
Alteration of deposit Sheared hostrocks are partly replaced by disseminated sulfides, and possibly silicified.

Production and reserves

Workings or exploration
Property was explored by open cuts and developed by more than 200 feet of underground workings, probably mostly in the 1920s.
Selected samples of sulfide-rich quartz veins reportedly assayed as high as 35 oz Au per ton. Assays of some of the sheared and mineralized felsite showed about 0.097-0.145 oz Au and 1.0 oz Ag per ton.
Indication of production None

Additional comments

Property probably originally staked in early 1920s.
The Alaska-Premier site probably includes the old Ready Money and Alaska claims (Cobb, 1978, p. 92-93).

References