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  3. Mineral Resource Data System (MRDS)

Consolidated Modderfontein

Producer in South Africa with commodities Gold, Silver
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Warning: This record lacks important information: bibliographic references, which we consider necessary for a comprehensive report.
Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Nearby scientific data
  7. Economic information about the deposit and operations
  8. Ownership information
  9. Reserves and resources
  10. Workings at the site
  11. Links to other databases
  12. Reporter information

Geologic information

Identification information

Deposit ID 10207517
MAS/MILS ID 7910200093
Record type Site
Current site name Consolidated Modderfontein

Geographic coordinates

Point of reference Plant
Geographic coordinates: 28.38475, -26.1966 (WGS84)

Site location context

Political divisions (FIPS codes)

South Africa(country)

Africa(continent)

Land(continent)

Geographic areas

Country
South Africa

Commodities

Commodity Importance
Gold Primary
Silver Secondary

Nearby scientific data

Plant (1) 28.38475, -26.1966
ListMap

Economic information

Economic information about the deposit and operations

Operation type Underground
Development status Producer
Commodity type Metallic
Significant Yes
Milling method Hydrometallurgy Unspecified

Ownership information

  • Type Owner-Operator
    Owner Consolidated Modderfontein Mines Ltd

Reserves and resources

  • Type In-situ
    Estimate year 0
    Commodity Subtype Grade units Group Importance Year
    Gold Au 4.13 g/mt Gold Major 0
    Silver Ag 0.41 g/mt Silver Minor 0

Comments on the reserve resource information

  • 1989 PROD.= 76,380 OZ. AU FROM MILLING OF 602,250 MT ORE. HAS NOT BEEN UPDATED FOR 1992 AU AVAILABILITY STUDY (ONLY DID MAJOR UG OPERATIONS).
  • Q-MAT 1 RESOURCES COMPRISED OF ORE FROM 3 REEFS: 50 M MT AT 3 G/MT FOR KIMBERLY REEF; 35 M MT AT 4.5 G/MT FOR MAIN REEF; 15 M MT AT 3 G/MT FOR SOUTH FEEF. ALL REEFS ARE IN WITWATERS RAND SYSTEM. THE TREND IS E-W WITH 15-60 DEGREE DIPS TOWARDS SOUTH.

Workings at the site

  • Type of workings Underground
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method BREAST STOPING 10-30
    Capacity 681
    Capacity Units MT ORE/DAY
    Unit Production Cost 33.83
    Units of Production $/MT ORE
    Operating Days per Year 350
    Operating Shifts per Day 3
    Year of Information 1981

Reference information

Reporter information

Type Date Name Affiliation Comment
Reporter 28-SEP-1992 Boyle, Ed U.S. Bureau of Mines

Beyond USGS

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

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