| Deposit ID | 10304664 |
|---|---|
| MAS/MILS ID | 7830500001 |
| Record type | Site |
| Current site name | Chilulungula Hills |
| Geographic coordinates: | 38.83448, -10.41422 (WGS84) |
|---|
Political divisions (FIPS codes)
Mtwara(province)
Tanzania(country)
Africa(continent)
Land(continent)
| Country | State |
|---|---|
| Tanzania | Mtwara |
| Commodity | Importance |
|---|---|
| Graphite Critical | Primary |
| (1) | 38.83448, -10.41422 |
|---|
| Operation type | Surface |
|---|---|
| Development status | Prospect |
| Commodity type | Non-metallic |
| Significant | No |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| U.S. Bureau of Mines | Minerals Availability System | MAS | 7830500001 |
HARRIS, J.F. SUMMARY OF THE GEOLOGY OF TANGANYIKA, GEOL.
SURV. OF TANGANYIKA, MEMOIR NO.1, PART IV-ECONOMIC GEOLOGY
, 1961, PP. 78-79.
DMA SERIES 1501 MAP, SHEET SC 37-10, SCALE 1:250,000.
| Subject category | Comment text |
|---|---|
| Deposit | EXTENSIVE ZONE OF GRAPHITIC QUARTZITES AND SCHISTS ON THE NORTH-WEST FLANK OF THE HILLS KNOWN AS NDUNGO AND CHILI- OGALI, ABOUT 9.6 KM SE OF NACHININGWEA IN THE SOUTHERN PROVINCE.CO-ORDINATES ARE OF CHILIOGALI HILL SUMMIT. DEPOSITS LOCATED ABOUT 3 KM FROM SOUTHERN PROVINCE RAILROAD PITTING AND TRENCHING AS OF 1960 - NINE 200 LB. SAMPLES EXAMINED IN SURVEY LAB AT DODOMA. GRAPHITIC ROCKS EXTEND BEYOND AREAS TRENCHED, TONNAGE UNKNOWN IN 1960 BUT SAID TO BE "CERTAINLY LARGE". GRAPHITIC ROCKS MAKE UP A ZONE 305 M WIDE WITHIN WHICH INDIVIDUAL BANDS CAN ATTAIN THICKNESSES OF UP TO 61 M. TESTS SHOWED AVG. CARBON CONTENTS OF 11.4 TO 27.8 %. ONE CONC. PRODUCED HAD 79% C AND REPRESENTED 28.2 % OF THE GROUND ROCK FEED (ROUGH FLOTATION ONLY). LAB TESTS ON ONE 200 LB. SAMPLE SHOWED CAPABLE OF PRODUCING CRUCIBLE GRADE FLAKE GRAPHITE TO COMMERCIAL SPECS. FLAKE FRACTION WAS ONLY 3-4 % OF THE RAW FEED (25% OF RAW FEED GAVE A 50% GRAPHITE CONCENTRATE OF -52 MESH). |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 21-OCT-1983 | Boyle, Ed | U.S. Bureau of Mines |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.