| Deposit ID | 10158150 |
|---|---|
| MAS/MILS ID | 3510350008 |
| Record type | Site |
| Current site name | Boca De Lage |
| Alternate or previous names | Boca De Lage Mine |
| Point of reference | Ore Body |
|---|---|
| Geographic coordinates: | -36.49888, -6.16476 (WGS84) |
| Location accuracy | 10000(meters) |
Political divisions (FIPS codes)
Rio Grande Do Norte(province)
Brazil(country)
South America(continent)
Land(continent)
| Country | State |
|---|---|
| Brazil | Rio Grande Do Norte |
| Commodity | Importance |
|---|---|
| Tungsten Critical | Primary |
| Materials | Type of material |
|---|---|
| Scheelite | Unknown |
| Ore Body (1) | -36.49888, -6.16476 |
|---|
| Thickness | 40M | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Length | 1400M | ||||||||||||||
| Width | 100M | ||||||||||||||
| Depth to top | 400M | ||||||||||||||
| |||||||||||||||
| Operation type | Underground |
|---|---|
| Development status | Past Producer |
| Commodity type | Metallic |
| Significant | Yes |
| Mining method | Open Stope - Room and Pillar |
| Year of first production | 1977 |
| Milling method | Gravity |
| District name | Currais Novos |
|---|
| Type | Owner-Operator |
|---|---|
| Owner | Tungstenio Do Brasil Minerios E Metais |
| Interest | 100 |
| Year | 1982 |
| Type | In-situ | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Estimate year | 1990 | ||||||||||||||
| Measured | 455000mt ore | ||||||||||||||
| Demonstrated | 455000mt ore | ||||||||||||||
| Total resources | 455000mt ore | ||||||||||||||
| |||||||||||||||
| Type of workings | Underground | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Length | 1360M | ||||||||||||||||||||||||||||
| Overall depth | 218M | ||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| U.S. Bureau of Mines | Minerals Availability System | MAS | 3510350008 |
ROSKILL INFORMATION SERVICES LTD., THE ECONOMICS OF TUNGSTEN
6'TH EDITION 1990. P 56.
YIN, S.W.H. AND WANG, C.T., TUNGSTEN SOURCES METALLURGY,
PROPERTIES AND APPLICATIONS, PLENUM PRESS, NEW YORK.
| Subject category | Comment text |
|---|---|
| Deposit | TUNGSTENIO DO BRASIL, AS A SUBSIDIARY OF UNION CARBIDE, BEGAN EXPLORATION OF THE BOCA DE LAGE DEPOSIT IN 1969. PRODUCTION BEGAN IN 1977 AND AN OUTPUT OF 450 TPY OF TUNGSTEN IN CONCENTRATES WAS PLANNED. A MAJOR EXPANSION WAS UNDERTAKEN IN 1982. IN LATE 1986, UNION CARBIDE AGREED TO SELL THE MINE AND MILL TO A BRAZILIAN SUBSIDIARY OF ANGLO AMERICAN. PRODUCTION HAS BEEN CONSISTENTLY OF THE ORDER OF 500 TPA OF CONCENTRATES GRADING 73 OR 74% WO3. THE GRADE HAS BEEN GRADUALLY IMPROVING. (SEE ROSKILL IN BIBLIOGRAPHY). |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 29-JUL-1992 | Gazdik | U.S. Bureau of Mines |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.