| Deposit ID | 10024797 |
|---|---|
| MRDS ID | ISM0549 |
| Record type | Site |
| Current site name | Krantzberg |
| Geographic coordinates: | 15.01818, -21.39695 (WGS84) |
|---|---|
| Relative position | OMARURU |
Political divisions (FIPS codes)
Namibia(country)
Africa(continent)
Land(continent)
| Country |
|---|
| Namibia |
| Commodity | Importance |
|---|---|
| Tungsten Critical | Primary |
| Host or associated | Host |
|---|---|
| Rock type | Metamorphic Rock > Schist |
| Host or associated | Host |
|---|---|
| Rock type | Metamorphic Rock > Greisen |
| Rock unit name | Salem Granite;Khomas Series;Karoo Sediments |
| Rock description | Salem Granite;Khomas Series;Karoo Sediments |
| Host or associated | Host |
|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Pyroclastic Rock > Volcanic Breccia (Agglomerate) |
| (1) | 15.01818, -21.39695 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Greisen Zones Related To Mesozoic Erongo Granite |
| Development status | Occurrence |
|---|---|
| Commodity type | Metallic |
| Significant | No |
| Discovery year | 1938 |
| Year of first production | 1938 |
| Year of last production | 1980 |
| Type | Operator |
|---|---|
| Owner | Krantzberg Mining Co. |
| Type | Owner |
|---|---|
| Owner | Nord Resources Corp. (40%); Ebco Mining Co. (60%) |
| Year | 1956 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Period | To 1956 | ||||||||||||||
| Description | Cp_Grade: ^Wolframite (56?% Wo3) | ||||||||||||||
| |||||||||||||||
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | ISM0549 | |
| USGS | International Strategic Minerals Inventory | ISMI | W0147 |
ANSTETT,T.F., BLEIWAS,D.F., AND HURDELBRINK,R.J., 1985, TUNGSTEN AVAILABILI KTY - MARKET ECONOMY COUNTRIES, U.S. BUREAU OF MINES, INFORMATION CIRCULAR 9025 , 51P.
HAUGHTON,S.H., FROMMURZE,H.F., GEVERS,T.W., SCHWELLNUS,C.M., AND ROUSSOUW,P .J., 1939, THE GEOLOGY AND MINERAL DEPOSITS OF THE OMARURU AREA, SOUTH WEST AFR ICA - AN EXPLANATION OF SHEET NO. 71; UNION OF SOUTH AFRICA, GEOLOGICAL SURVEY, 160P.
ELLIS,M.W. AND STEVENS,C., THE MINERAL INDUSTRY OF THE TERRITORY OF SOUTH-W EST AFRICA, U.S. BUREAU OF MINES, MINERALS YEARBOOK, 1978-79, VOL. III, AREA RE PORTS: INTERNATIONAL, P. 850.
R.F. STEVENS, JR., 1972, U.S. BUREAU OF MINES, MINERALS YEARBOOK, 1972, VOL . 1., METALS, MINERALS AND FUELS, P. 1,256.
PC1: (RF1)
| Subject category | Comment text |
|---|---|
| Deposit | THIS RECORD WAS COMPILED FOR THE INTERNATIONAL STRATEGIC MINERALS INVENTORY. THE DATA WERE USED IN PREPARATION OF THE USGS CIRCULAR 930 SERIES OF REPORTS. MINERAL RESOURCE CATEGORIES AND CODES HEREIN ARE FROM THE INTERNATIONAL CLASSIFICATION SYSTEM RECOMMENDED BY THE UNITED NATIONS GROUP OF EXPERTS ON DEFINITIONS AND TERMINOLOGY FOR MINERAL RESOURCES. (SEE NATIONAL RESOURCES FORUM, V. 4, NO. 3, P. 307-313.). UNDERGROUND |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-JUN-1986 | Sinclair, W.David | Geological Survey of Canada |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.