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  3. Mineral Resource Data System (MRDS)

Hemple Copper Co.

Prospect in Alaska, United States with commodities Copper, Gold, Silver, Zinc
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Mineral rights holdings
  12. Land status
  13. Ownership information
  14. Reserves and resources
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10258574
MRDS ID A000681
MAS/MILS ID 0020960074
Record type Site
Current site name Hemple Copper Co.
Alternate or previous names Fidalgo, Hemple, S.A., Nero, Sylar, Last Chance

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -146.54114, 60.85539 (WGS84)
Elevation 140
Location accuracy 100(meters)

Site location context

Political divisions (FIPS codes)

Valdez-Cordova(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Cordova D-7(quadrangle 1:63,360 scale)

Cordova NW(quadrangle 1:100,000 scale)

Cordova(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Eastern Prince William Sound(hydrologic unit)

Prince William Sound(hydrologic accounting unit)

South Central Alaska(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Chugach 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

Public Land Survey System information

Meridian Township Range Section Fraction State
Copper River 012 S 007 W 06 NENESW Alaska

Commodities

Commodity Importance
Copper Primary
Gold Tertiary
Silver Tertiary
Zinc Critical Tertiary

Materials information

Materials Type of material
Chalcopyrite Unknown
Pyrite Unknown
Pyrrhotite Unknown

Nearby scientific data

Main Entrance (1) -146.54114, 60.85539
ListMap

Economic information

Ore body information

  • Strike N55W
    Dip 60N
    Length 457M
    Width 7.3M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 SHEAR ZONE
    Shape of Orebody #1 LENTICULAR
    Type of Orebody #2 REPLACEMENT
    Shape of Orebody #2 TABULAR
    Type of Orebody #3 DISSEMINATED
    Primary mode of Origin HYDROTHERMAL
    Primary Ore Control FAULTING
    Secondary Ore Control FOLDING
    Degree of Wallrock Alter. UNKNOWN
    Type of Wallrock Alter. #1 UNKNOWN
    Strike And Dip N55W:60N
    Date of Last Modification 881017

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic
Significant No

Mineral rights holdings

Type of mineral rights Patented

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner S. A. Hemple
    Interest 100
    Home office Alaska
    Year 1978
  • Type Owner
    Owner Hemple Copper Co.
    Interest 100
    Home office Alaska
    Year 1910

Reserves and resources

  • Type In-situ
    Estimate year 1984
    Inferred 2645mt ore
    Total resources 2645mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.6 wt-pct Copper Major 1984
    Silver Ag 7.1 g/mt Silver Trace 1984
  • Type In-situ
    Estimate year 1984
    Inferred 49mt ore
    Total resources 49mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 4.5 wt-pct Copper Major 1984
    Zinc Zn 1.7 wt-pct Zinc Trace 1984
    Gold Au 87.5 g/mt Gold Trace 1984
    Silver Ag 115.7 g/mt Silver Trace 1984
  • Type In-situ
    Estimate year 1984
    Inferred 4298mt ore
    Total resources 4298mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 1.61 wt-pct Copper Major 1984
    Zinc Zn 0.46 wt-pct Zinc Trace 1984
  • Type In-situ
    Estimate year 1984
    Inferred 7mt ore
    Total resources 7mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 4.6 wt-pct Copper Major 1984
    Zinc Zn 1.8 wt-pct Zinc Trace 1984
    Gold Au 0.05 g/mt Gold Trace 1984
    Silver Ag 10.6999 g/mt Silver Trace 1984

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit MS 737 CHALCOPYRITE, PYRRHOTITE, AND SPHALERITE IN SHEAR ZONES. 2000 FEET WORKINGS. Workings consist of: 140.2 m. elev. adit - 365.8 m. of workings; 210.3 m. elev. adit - 76.2 m. of workings; 228.6 m. elev. adit - 19.8 m. of workings; 259.1 m. elev. adit - 5.5 m. of workings; 2 shafts, and opencuts.

Reporter information

Type Date Name Affiliation Comment
Reporter 17-OCT-1988 Wlg U.S. Bureau of Mines

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.