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

Krantzberg

Past Producer in Namibia with commodity Tungsten
Map
XML
JSON
KML
C
Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Nearby scientific data
  8. Ore body information
  9. Economic information about the deposit and operations
  10. Ownership information
  11. Workings at the site
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10183593
MAS/MILS ID 7920000081
Record type Site
Current site name Krantzberg

Geographic coordinates

Point of reference Claim
Geographic coordinates: 15.5015, -20.16371 (WGS84)
Elevation 1400
Location accuracy 1000(meters)

Site location context

Political divisions (FIPS codes)

Namibia(country)

Africa(continent)

Land(continent)

Geographic areas

Country
Namibia

Commodities

Commodity Importance
Tungsten Critical Primary

Materials information

Materials Type of material
Quartz Unknown
Wolframite Unknown

Nearby scientific data

Claim (1) 15.5015, -20.16371
ListMap

Economic information

Ore body information

  • Length 100M
    Width 10M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 FISSURE VEIN
    Shape of Orebody #1 LENTICULAR
    Primary mode of Origin HYDROTHERMAL
    Primary Ore Control IGNEOUS
    Secondary Ore Control FRACTURING
    Degree of Wallrock Alter. UNKNOWN
    Type of Wallrock Alter. #1 UNKNOWN
    Date of Last Modification 830819

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Significant Yes
Discovery year 1900
Mining method Open Stope - Sublevel
Milling method Gravity

Ownership information

  • Type Owner
    Owner Nord Resources Corp.
    Interest 40
    Home office S W Africa(Namibia)
    Year 1982
  • Type Owner
    Owner Bethelem Steel
    Interest 60
    Home office New Mexico
    Year 1982

Comments on the ownership information

  • EBCO MINING COMPANY IS A SUBSIDIARY OF BETHLEHEM STEEL CORP. (COUNTRY OF INCORPORATION NOT KNOWN).

Comments on the reserve resource information

  • 7 TO 10 YEAR RESERVE IN 1973. RESOURCES AS OF 1/83. NORD 60%. BETHLEHEM 40%.
  • RESERVE FIGURES, ACCORDING TO NORD, ARE NOT NECESSARILY A MEASURE OF THE TOTAL REMAINING ORE AT KRANTZBERG AS SUBSTANTIAL EXPLORATION IS STILL IN PROGRESS.

Workings at the site

  • Type of workings Underground
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method SUBLEVEL 10-43
    Percent Waste Rock 16.7
    Hardness of Rock HARDROCK WITH LITTLE WATER
    Rock Characteristics UNKNOWN
    Rock Support Chars. UNKNOWN
    Mine Support Chars. UNKNOWN
    Number of Inclines 2
    Number of Adits 2
    1st Condition of Workings OPEN
    Capacity 300
    Capacity Units MT ORE/DAY
    Unit Production Cost 13.1
    Units of Production $/MT ORE
    Operating Days per Year 350
    Operating Shifts per Day 3
    Year of Information 1982

Comments on other economic factors

  • 72% WO3 CONCS., IN 40 KG BAGS,TRUCKED TO OMARURU AND RAILED FROM OMARURU TO WALVIS BAY FOR EXPORT (SOME IS RAILED FROM OMARURU TO MARKETS IN S.AFRICA),MOSTLY TO EUROPE.
  • TRANSPORTATION COSTS MILL TO SMELTER: $37/MT.

Reference information

Bibliographic references

  • Deposit

    NORD RESOURCES CORP., 1976 10K REPORT, 5 PP.

  • Deposit

    E/MJ INTL.DIR. OF MINING AND MINERAL PROCESSING OPERATIONS,

  • Deposit

    1973/1974, MCGRAW HILL, N.Y., 1974, P.240.

  • Deposit

    GEOLOGICAL MAP OF SOUTH WEST AFRICA, GOVT. PRINTER, PRETORIA

  • Deposit

    , S.A., 1963, SCALE 1:1,000,000.

  • Deposit

    WORLD MINING, MAY 1973.

  • Deposit

    METAL SOURCEBOOK, JULY 16,1973.

  • Deposit

    KRANTZBERG MINE MAPS: KRANTZBERG MINE AREA; PHOTOGEOLOGIC

  • Deposit

    MAP; KRANTZBERG MINE-C ZONE.

General comments

Subject category Comment text
Deposit LOCATED 18 KM SW OF VILLAGE OF OMARURU, 220 KM NE OF WALVIS BAY. MINE STARTED PRODUCTION IN 1973 OR EARLY 1974 WITH MILLING CAPACITY OF 300 MT ORE/DAY AND POSSIBLE INCREASE TO 500 MT/DAY. BY YEAR END 1976 MILL STILL OPERATING AT 300 MTPD CAPACITY. FOR YEAR OF 1976: 57,816 MT ORE MILLED AT GRADE OF 0.47% WO3 TO PRODUCE 148.1 MT OF WO3 (BASED ON REPORTED 45.5% LOSS OF WO3 IN MILLING DUE TO VERY FINE WO3 PARTICLE LOSSES).

Reporter information

Type Date Name Affiliation Comment
Reporter 20-APR-95 Rfb 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