North Star

Occurrence in Alaska, United States with commodities Silver, Gold, Lead

Geologic information

Identification information

Deposit ID 10000204
MRDS ID A010241
Record type Site
Current site name North Star
Alternate or previous names Bevacque, Bervaqua

Geographic coordinates

Geographic coordinates: -130.2237, 56.04671 (WGS84)
Relative position The North Star occurrence is in Section 23 at an elevation of about 3850 feet on a west-facing mountainside overlooking lower Ferguson Glacier, and about 1.2 mile east-southeast of Texas Lake (Elliott and Koch, 1981, p. 13, loc. 43). The location probably is accurate to within about a quarter of a mile.
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Silver Primary
Gold Primary
Lead Primary

Materials information

Materials Type of material
Galena Ore
Pyrite Ore
Quartz Gangue

Mineral occurrence model information

Model code 85
USGS model code 22c
Deposit model name Polymetallic veins
Mark3 model number 46

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Texas Creek
    Rock description Texas Creek
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Siltstone

Nearby scientific data

(1) -130.2237, 56.04671

Comments on the geologic information

  • Geologic Description = The country rocks in the area of the North Star occurrence are pelitic metasedimentary and subordinate andesitic metavolcanic strata of the Jurassic or older Mesozoic Hazelton Group, which are underlain and locally intruded by the Triassic Texas Creek Granodiorite (Smith, 1977; Koch, 1996).? Buddington (1929, p. 110) describes the deposit as a quartz fissure vein in graywacke about 150 feet from the contact of the Texas Creek Granodiorite. The vein is 1-2.5 feet thick and exposed in outcrop for 50 feet. Locally the vein contains masses of galena and a little pyrite.

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Hyder

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A010241
USGS Alaska Resource Data File ARDF BC043

Bibliographic references

  • Deposit

    Buddington, A.F., 1929, Geology of Hyder and vicinity, southeastern Alaska, with a reconnaissance of Chickamin River: U.S. Geological Survey Bulletin 807, 124 p.

  • Deposit

    Smith, J.G., 1977, Geology of the Ketchikan D-1 and Bradfield Canal A-1 quadrangles, Alaska: U.S. Geological Survey Bulletin 1425, 49 p.

  • Deposit

    Elliott, R.L., and Koch, R.D., 1981, Mines, prospects, and selected metalliferous mineral occurrences in the Bradfield Canal quadrangle, Alaska: U.S. Geological Survey Open-File Report 81-728-B, 23 p., 1 sheet, scales 1:250,000 and 1:63,360.

  • Deposit

    Koch, R.D., 1996, Reconnaissance geologic map of the Bradfield Canal quadrangle, southeastern Alaska: U.S. Geological Survey Open-File Report 81-728-A, 35 p., 1 sheet, scale 1:250,000.

Comments on the references

  • Primary Reference = Buddington, 1929

General comments

Subject category Comment text
Deposit Model Name = Polymetallic veins
Deposit Other Comments = the name Bevacque (Bervaqua) has been associated with this occurrence (Buddington, 1929).? Elliott and Koch (1981, p. 13, loc. 43) list silver and gold as queried commodities at the North Star prospect, but do not mention them in their description of the deposit. Nor is silver or gold mentioned in any of the earlier published descriptions of the prospect.

Reporter information

Type Date Name Affiliation Comment
Reporter 17-MAY-1998 H. C. Berg U.S. Geological Survey