Amitsoq Pluton

Occurrence in Greenland, Denmark with commodities Copper, Nickel, Platinum, Palladium, Gold, Rhodium, Silver, Asbestos
Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Alteration
  8. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10038195
MRDS ID M045496
Record type Site
Current site name Amitsoq Pluton

Geographic coordinates

Geographic coordinates: -44.09802, 60.36097 (WGS84)
Relative position IN SARQA FJORD OFF SONDRE SERMILIK

Site location context

Political divisions (FIPS codes)

Greenland(province)

Denmark(country)

Europe(continent)

Land(continent)

Geographic areas

Country State
Denmark Greenland

Comments on the location information

  • SEA LEVEL TO 335 METERS HIGH

Commodities

Commodity Importance
Copper Primary
Nickel Critical Secondary
Platinum Critical Tertiary
Palladium Critical Tertiary
Gold Tertiary
Rhodium Critical Tertiary
Silver Tertiary
Asbestos Tertiary

Comments on the commodity information

  • ORE MINERALS FORM LENSOID GRAINS PARALLEL TO RHYTHMIC LAYERING

Materials information

Materials Type of material
Chalcopyrite Ore
Cubanite Ore
Magnetite Ore
Pyrrhotite Ore
Sphalerite Ore
Antigorite Gangue
Calcite Gangue
Chlorite Gangue
Phlogopite Gangue
Talc Gangue

Alteration

  • (Local) Minimal Contact Metamorphism

Analytical data

Result PT = LESS THAN 0.1 - 0.8 PPM, PD = LESS THAN 0.1 - 0.8 PPM, RH = LESS THAN 0.1 PPM, AU = LESS THAN 0.1 - 0.8 PPM, AG = 2-7 PPM, AVERAGES: PT = 0.23 PPM (23 ANALYSIS), PD = 0.33 PPM (24 ANALYSIS) AU = 0.18 PPM (18 ANALYSIS), AG = 4 PPM
Result PT + PD + AU = .024 OZ PER TON, 0.13 OZ PER TON AG

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite
    Stratigraphic age (youngest) Neoproterozoic

Nearby scientific data

(1) -44.09802, 60.36097

Economic information

Geologic structures

Type of structure Regional
Structure description E. And Ne Striking, Steepling Dipping Fractures

Ore body information

  • General form DIKE-LIKE, IRREGULAR NARROWING TOWARD TOP
    Strike WEST
    Dip 50-80 DEG. N. AND S.
    Length 660M
    Width 128M
    Depth to bottom 335M

Controls for ore emplacement

  • Rhythmic Layering (Gently Dipping), Cycling Of Layers, Perhaps Through Banding

Comments on the geologic information

  • REG.COM: BERRANGE SAYS PINCHES AND SWELLS IN MASS DUE TO INTERSECTION OF FRACTURE SETS

Economic information about the deposit and operations

Development status Occurrence
Commodity type Both
Significant No
Discovery year 1960
Discoverer M. Loretan

Comments on the reserve resource information

  • ASSUME BODY 100 X 660 X 335 CU. METERS WITH AVERAGE GRADE 1 = PT + PD + AU AVERAGE, MAXIMUM ESTIMATE, PAGE WOULD DIVIDE BY 3, AVERAGE GRADE BASED GGU SPECT. ANALYSIS PLUS FALCONBRIDE ANALYSIS

Comments on the workings information

  • BERRANGE, MAPS AT 1:400

Comments on development

  • ECON.COM: SMALL MASS WITH UP TO 7% SULFIDES LOCALLY, FAR REMOVED FROM EASY ACCESS

Reference information

Bibliographic references

  • Deposit

    BERRANGE, J.P., 1970, MEDD. OM GRONLAND, BD 192, NO. 1, P. 43

  • Deposit

    NIELSEN, B.L., 1973, GRONLAND GEOL. UNDERS., REPT. NO. 56, P. 45

  • Deposit

    1962 GEOLMAP G.S.U. GREENLAN

General comments

Subject category Comment text
Deposit WIDTH VARIABLE 8 TO 150 METERS, DESCRIPTIONS REFER TO PLUTON - SULFIDE PATCHES UP TO 15 CM, GOSSAN ZONE 6M X 2 M EXPOSED WITH 4-7 % SULFIDES

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1975 Page, Norman J. U.S. Geological Survey

Beyond USGS

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