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Hill Chromite Prospects

Occurrence in Alaska, United States with commodity Chromium
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Host and associated rocks
  8. Nearby scientific data
  9. Geologic structures
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Mining district
  13. Land status
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10002447
MRDS ID A013371
Record type Site
Current site name Hill Chromite Prospects
Related records 10161314

Geographic coordinates

Geographic coordinates: -135.00473, 56.95944 (WGS84)
Elevation 610
Location accuracy 500(meters)
Relative position 1.7 MI. NE OF LUCKY CHANCE MTN.

Site location context

Political divisions (FIPS codes)

Sitka(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Port Alexander D-4(quadrangle 1:63,360 scale)

Port Alexander NW(quadrangle 1:100,000 scale)

Port Alexander(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

Comments on the location information

  • LOCATION IS USGS MF-464, LOC. 6, WHICH CORRESPONDS TO LARGEST AND NORTHERNMOST ORE BODY SHOWN ON USGS B947-D, PLATE 20. OTHER ORE BODIES TREND SE FOR 5.0 MI., INCLUDING MF-464, LOCS. 6-13. LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Commodities

Commodity Importance
Chromium Critical Primary

Materials information

Materials Type of material
Chromite Ore
Olivine Gangue
Pyroxene Gangue
Serpentine Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite > Dunite
  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite > Dunite

Nearby scientific data

(1) -135.00473, 56.95944
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Foliation Of Schist And Phyllite Country Rock Strikes Nw, Dips 50 Degrees - 90 Degrees Ne

Ore body information

  • General form LENS, PINCH AND SWELL
    Strike SILLS: NW
    Dip SILLS: 90 DEGREES-50 DEGREES NE
    Length 8046.5M

Comments on the geologic information

  • SILLS THICKEN MARKEDLY IN AXIAL PART OF MAJOR FOLD IN ENCLOSING SCHISTS AND PHYLLITES.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1935
Discoverer Joe Hill

Mining district

District name Chichagof

Land status

Ownership category State

Comments on the reserve resource information

  • TOTAL RESERVES IN ALL ORE BODIES AMOUNT TO NO MORE THAN A FEW HUNDRED TONS OF CHROMITE.

Comments on the workings information

  • NATURE OF WORKINGS, IF ANY, NOT DEFINED.

Comments on development

  • CLAIMS STAKED BY JOE HILL IN 1935, BUT SHORTLY ABANDONED.

Reference information

Bibliographic references

  • Deposit

    USGS MF-464, LOC. 6-13 (1972)

  • Deposit

    USGS OF 78-787, P. 12 (1978)

  • Deposit

    USGS B 936-G P. 173-174, 177-180 (1942)

  • Deposit

    USGS B 947-D, P. 72-73, PLATE 20 (1946)

  • Other Database

    BAG-MF-464-6

General comments

Subject category Comment text
Deposit SMALL LENSES, THIN LAYERS, AND DISSEMINATED SMALL GRAINS OF CHROMITE IN SMALL SERPENTINITE BODIES (ALTERED DUNITE AND PYROXENITE IN FORM OF SILLS CONCORDANT TO FOLIATION OF SCHIST AND PHYLLITE COUNTRY ROCK.
Deposit DEPOSITS ARE SMALL, LOW GRADE, INACCESSABLE, AND OF NO COMMERCIAL SIGNIFICANCE. ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-87 Niles, L.P. (Huber, D.F.) 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.