Refugio

Prospect in Chile with commodities Gold, Copper
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. Ore body information
  11. Economic information about the deposit and operations
  12. Mining district
  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 10058039
MRDS ID TC03765
Record type Site
Current site name Refugio
Alternate or previous names Guanaco Hill, Pancho Hill, Verde Hill
Related records 10206791

Geographic coordinates

Geographic coordinates: -69.26617, -27.3758 (WGS84)
Relative position 60KM SOUTH OF LA COIPA; 30KM SOUTHWEST OF MARTE & LOBO

Site location context

Political divisions (FIPS codes)

Chile(country)

South America(continent)

Land(continent)

Geographic areas

Country
Chile

Commodities

Commodity Importance
Gold Primary
Copper Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Gold Ore
Molybdenite Ore
Pyrite Ore
Magnetite Gangue
Quartz Gangue
Specularite Gangue

Alteration

  • (Local) Quartz-Biotite-Chlorite-Clay-Sericite

Analytical data

Result DRILL-HOLE DATA RANGE FROM 0.021 G/T AU TO 0.137 G/T AU DOWN TO 60M.

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Volcanic Breccia (Agglomerate)
    Stratigraphic age (youngest) Miocene
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite

Nearby scientific data

(1) -69.26617, -27.3758

Economic information

Ore body information

  • Thickness 125M
    Length 1190M
    Width 245M
    Depth to bottom 200M

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic
Significant No

Mining district

District name Maricunga

Ownership information

  • Type Owner
    Owner Minera Bema Gold Chile Limitada (50%)

Comments on the production information

  • EXTRACTION BY HEAP LEACH PROCESSING. PLAN TO PRODUCE 33000 TONS PER DAY OR 233000 OZ AU PER YEAR.

Reserves and resources

  • Type In-situ
    Name VERDE DEPOSIT
    Estimate year 1989
    Total resources 105000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 9.642 g/mt Gold Major 1989
  • Type In-situ
    Estimate year 1991
    Total resources 200000000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 0.96 g/mt Gold Major 1991
    Copper Cu 0.08 wt-pct Copper Minor 1991
  • Type In-situ
    Estimate year 1994
    Total resources 92517000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 0.734 g/mt Gold Major 1994

Comments on the reserve resource information

  • PRELIMINARY RESERVES; 41MT AT 0.030 OZ/T ARE INFERRED; TOTAL OXIDE RESERVE IS 75MT AT 0.030 OZ/T. PANCHO DEPOSIT, 500M NW OF VERDE, HAS THIN OXIDE ZONE IN CORE OF A STOCKWORK; SULFIDE POTENTIAL IS AT 0.030-0.035 ZO.T AU AND 0.2-0.3% CU. MINING MAGAZINE (1990) REPORTS RESERVES OF 5,580,000 OZ AU. ORE(1) IS RESERVE IN VERDE HILL SECTOR, CU GRADE LOW BECAUSE DRILL HOLES ARE MAINLY IN OXIDIZED ZONE. ORE (2) MINEABLE RESERVES FOR 9.4 YEARS WITH 1 TO 1 STRIPPING RATIOS. ORE (3) TOTAL RESERVES.

Comments on the workings information

  • PLANS TO MINE WITH OPEN PIT.

Comments on development

  • BEMA DRILLED 45 HOLES (5880M) OVER AREA OF 915M X 520M BY END OF 1989; PHASE II DRILLING (48,768M) CONFIRMED GEOMETRY, SIZE, AND GRADE ONLY SHALLOW DRILLING AND TRENCHING ON PANCHO DEPOSIT.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit ABOVE DIMENSIONS FOR VERDE DEPOSIT; OXIDE ZONE AT SURFACE AND GENERALLY 100M DEEP; DRILL HOLES STILL IN ORE IN THE SULFIDE ZONE AT 274M. PANCHO DEPOSIT, 500M TO NW, IS 730M X 460M. FUTURE DRILLING WILL DISCERN WHETHER DEPOSITS ARE CONNECTED.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-SEP-1990 Williams, William C. University of Arizona
Updater 01-NOV-1994 Page, Norman J. U.S. Geological Survey

Beyond USGS

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