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

Shamrock Mine

Prospect in Jackson county in Oregon, United States with commodities Cobalt, Copper, Manganese, Nickel, Platinum
Map
XML
JSON
KML
B
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. Mining district
  12. Mineral rights holdings
  13. Land status
  14. Ownership information
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10249569
MRDS ID M061386
MAS/MILS ID 0410290059
Record type Site
Current site name Shamrock Mine
Alternate or previous names Chisholm Copper, Shamrock Manganese
Related records 10042983

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -122.97674, 42.60092 (WGS84)
Elevation 579
Location accuracy 500(meters)

Site location context

Political divisions (FIPS codes)

Jackson(county)

Oregon(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Boswell Mountain(quadrangle 1:24,000 scale)

Crater Lake(quadrangle 1:100,000 scale)

Medford(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Middle Rogue(hydrologic unit)

Southern Oregon Coastal(hydrologic accounting unit)

Oregon-Washington Coastal(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management OR)

Bureau of Land Management OR BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States Oregon Jackson

Public Land Survey System information

Meridian Township Range Section Fraction State
Willamette 034 S 002 W 19 E2 Oregon

Commodities

Commodity Importance
Cobalt Critical Tertiary
Copper Tertiary
Manganese Critical Primary
Nickel Critical Tertiary
Platinum Critical Tertiary

Materials information

Materials Type of material
Chalcopyrite Unknown
Pentlandite Unknown
Pyrrhotite Unknown

Nearby scientific data

Main Entrance (1) -122.97674, 42.60092
ListMap

Economic information

Ore body information

  • Area 19HA
    Field Value
    Type of Orebody #1 STOCKWORK
    Shape of Orebody #1 IRREGULAR
    Type of Orebody #2 PEGMATITE
    Type of Orebody #3 REPLACEMENT
    Primary mode of Origin HYDROTHERMAL
    Secondary mode of Origin METAMORPHISM
    Primary Ore Control FAULTING
    Secondary Ore Control FOLDING
    Degree of Wallrock Alter. UNKNOWN
    Type of Wallrock Alter. #1 UNKNOWN
    Minimum Depth to Top 0
    Total Surface Area (HA) 19
    Date of Last Modification 801124

Comments on the geologic information

  • THE NICKEL SULFIDES OCCUR IN VEINS OF NORITE, A HYPERSTHENE GABBRO INTRUSIVE. THE MAY CREEK SCHIST FORMATION IS A FINE GRAINED BLUE GRAY QUARTZITE CONTAINING HORNBLENDE AND MICA, LOCALLY EXHIBITING LIT-PAR-LIT INJECTIONS OF SILICA AND FELDSPAR.
  • THE COBALT MINERAL HAS NOT BEEN IDENTIFIED, BUT IS PROBABLY ASSOCIATED WITH THE PENTLANDITE.

Economic information about the deposit and operations

Operation type Underground
Development status Prospect
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1900

Mining district

District name Gold Hill District

Mineral rights holdings

Type of mineral rights Located Claim

Land status

Ownership category BLM Administrative Area

Ownership information

  • Type Owner
    Owner R. D. Semon
    Home office Oregon
    Year 1954
  • Type Owner
    Owner Jackson County
    Home office Oregon
    Year 1954

Comments on the ownership information

  • IN 1945 R.D.SEMON OF MEDFORD AND HIS PARTNER, STANLEY HYDE OF HOOD RIVER PURCHASED THE SHAMROCK CLAIM FROM THE ESTATE OF DR.W.P.CHISHOLM (R.I.P.) OF GOLD HILL. THE RHODONITE DEPOSITS ARE PARTLY ON A LOCATION CLAIM OWNED BY R.D.SEMON AND PARTLY ON THE RIGHT-OF-WAY OF THE EVANS CREEK COUNTY ROAD.

Comments on the production information

  • NO HISTORY OF PRODUCTION IN ADDITION TO THE CHEMICAL ANALYSIS SHOWN, THE SAMPLES WERE ASSAYED SPECTROGRAPHICALLY TO CHECK FOR OTHER ELEMENTS.

Comments on the workings information

  • SENSITIVITY TO DEVELOPMENT DEPENDS ON THE LOCATION OF THE MILLING SITE SHOULD THE SHAMROCK EVER GO INTO PRODUCTION.

Reference information

Bibliographic references

  • Deposit

    U.S. BUREAU OF MINES RI 4895, 1952.

  • Deposit

    U.S. BUREAU OF MINES RI 5261, 1956.

  • Deposit

    U.S. BUREAU OF MINES RI 5472, 1959.

  • Deposit

    U.S. GEOLOGICAL SURVEY MISC. FIELD STUDIES MAP MF-848, 1977.

  • Deposit

    OR. DEPT. GEOL. AND MIN. INDUST. MISC. PAPER 20, 1978,

  • Deposit

    P. 57-58.

General comments

Subject category Comment text
Deposit MINERAL PROPERTY FILE # 41.046 PERTAINS TO THIS PROPERTY. MINE MAPS ARE AVAILABLE UNDER FORMER SEQ #0410290024. THIS IS A RESULT OF COMBINING THE SHAMROCK MANGANESE PROS- PECT WITH THE SHAMROCK MINE UNDER SEQ #0410290059. THE U.S.BUREAU OF MINES MINED 101.5 TONS OF RHODONITE FROM THE PROPERTY DURING THE SPRING AND SUMMER OF 1952 AND THE SPRING OF 1953. IT WAS USED FOR EXTRACTION RESEARCH A RECALL ASSAY ON THE HEAD SAMPLE SHOWED IT TO CONTAIN 0.03 OUNCE PLATINUM PER TON. GOLD AND SILVER APPEAR AS TRACE ELEMENTS ALSO IN SEC 20

Reporter information

Type Date Name Affiliation Comment
Reporter 07-AUG-92 Western Field Operations Center (WFOC) 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