1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Unnamed (near Round Point)

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

Geologic information

Identification information

Deposit ID 10308066
Record type Site
Current site name Unnamed (near Round Point)

Geographic coordinates

Geographic coordinates: -132.75185, 56.28674 (WGS84)
Relative position Coordinates are the approximate center of a block of more than 600 claims staked on southeastern Zarembo Island in the late 1970's and active through at least 1981 (U.S. Bureau of Mines, 1980). Locality 66 of Grybeck, Berg, and Karl (1984), who also include a map showing the outline of the claims as of the early 80's. See also PE063 for a specific site within the claim block that was active during the same period.

Site location context

Political divisions (FIPS codes)

Wade Hampton(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Petersburg B-3(quadrangle 1:63,360 scale)

Petersburg S(quadrangle 1:100,000 scale)

Petersburg(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Central Southeast Alaska(hydrologic accounting unit)

Southeast Alaska(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Tongass National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Copper Primary
Lead Primary
Zinc Critical Primary

Mineral occurrence model information

Model code 184
USGS model code 28a
Deposit model name Massive sulfide, kuroko
Mark3 model number 93
Model code 187
USGS model code 28a.1
Deposit model name Massive sulfide, Sierran kuroko
Mark3 model number 44

Nearby scientific data

(1) -132.75185, 56.28674
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = See PE063 for description of a prospect within this claim block. . Recent mapping by the USGS (Sue Karl, oral communication, 1998) indicates that much of this block of claims consists of Triassic Hyd Group rocks that host the volcanogenic massive sulfide deposits of the Duncan-Zarembo belt defined by Berg and Grybeck (1980), and Berg (1981).
  • Age = Triassic.

Economic information about the deposit and operations

Development status Prospect

Comments on exploration

  • Status = Active?

Mining district

District name Ketchikan

Comments on the production information

  • Production Notes = None

Comments on the reserve resource information

  • Reserves = None

Comments on the workings information

  • Workings / Exploration = Block of more than 600 claims staked in the late 1970's and active through at least 1981 (U.S. Bureau of Mines, 1980). The 1995, Alaska Department of Natural Resources Kardex claim data base shows that at least a few claims were still active.

Reference information

Bibliographic references

  • Deposit

    U.S. Bureau of Mines, 1980, Claim map, Petersburg quadrangle, Alaska: U.S. Bureau of Mines Map 117, 1 sheet, scale 1:250,000.

  • Deposit

    Grybeck, D.J., Berg, H.C., and Karl, S.M., 1984, Map and description of the mineral deposits in the Petersburg and eastern Port Alexander quadrangles: U.S. Geological Survey Open-File Report 84-837, 86 p., 1 sheet, scale 1:250,000.

Comments on the references

  • Primary Reference = Grybeck, Berg, and Karl, 1984

General comments

Subject category Comment text
Deposit Model Name = Kuroko volcanogenic massive-sulfide deposit (Cox and Singer, 1986; model 28a); alternatively a Sierran Kuroko volcanogenic massive sulfide deposit (Bliss, 1992; model 28a1)

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-98 H.C. Berg and D.J. Grybeck 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.