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

Amitsoq Pluton

Occurrence in Greenland, Denmark with commodities Copper, Nickel, Platinum, Palladium, Gold, Rhodium, Silver, Asbestos
Map
XML
JSON
KML
B

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
(click for info)

Geographic areas

Country State
Denmark Greenland

Comments on the location information

  • SEA LEVEL TO 335 METERS HIGH

Commodities

Commodity Importance
Copper Primary
Nickel Secondary
Platinum Tertiary
Palladium Tertiary
Gold Tertiary
Rhodium 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
ListMap

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.
    Depth to bottom 335M
    Width 128M
    Length 660M

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

Economic information about the deposit and operations

Development status Occurrence
Commodity type Both metallic and non-metallic
Significant No
Discovery year 1960
Discoverer M. Loretan
Discovery method Ore-Mineral Not In Place

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

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS M045496

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