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  3. Mineral Resource Data System (MRDS)

Julian

Prospect in Alaska, United States with commodity Copper
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Nearby scientific data
  7. Economic information about the deposit and operations
  8. Mining district
  9. Links to other databases
  10. Bibliographic references
  11. Reporter information

Geologic information

Identification information

Deposit ID 10307669
Record type Site
Current site name Julian

Geographic coordinates

Geographic coordinates: -131.74176, 55.15974 (WGS84)
Relative position This prospect is known only from U.S. Bureau of Mines (1977) claim records. Its approximate location is at or near sea level, on the north side of the entrance to Dall Bay. The site is in section 29, T. 77 S., R. 91 E., of the Copper River Meridian. It corresponds to loc. 128 in Elliott and others (1978). The location probably is accurate within 0.3 mile.

Site location context

Political divisions (FIPS codes)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Ketchikan A-6 NE(quadrangle 1:24,000 scale)

Ketchikan SW(quadrangle 1:100,000 scale)

Ketchikan(quadrangle 1:250,000 scale)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Copper Primary

Nearby scientific data

(1) -131.74176, 55.15974
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The country rocks in the area of this prospect consist of an assemblage of undivided Silurian or Ordovician metamorphosed bedded and intrusive rocks that are intruded by stocks and dikes of Silurian trondhjemite (Berg, 1973; Berg and others, 1988), the rocks are cut by a complex system of high-angle faults that mainly strike NE and NW. Locally, they also are permeated by finely disseminated hydrothermal hematite, giving them (especially the trondhjemite) a pink or red hue commonly mistaken for potassium feldspar. . According to U.S. Bureau of Mines claim records (1977), this prospect, which appears to be in complexly faulted and hydrothermally altered trondhjemite and/or metamorphic rocks, was staked for copper. No other information about it has been made public.

Economic information about the deposit and operations

Development status Prospect

Mining district

District name Ketchikan

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Berg, 1973; Elliott and others, 1978

Reporter information

Type Date Name Affiliation Comment
Reporter 05-JUL-99 H.C. Berg U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Maps centered on this site

Authoritative Alaska resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.