| Deposit ID | 10081075 |
|---|---|
| MRDS ID | W032774 |
| Record type | Site |
| Current site name | Ashanti |
| Alternate or previous names | Obuasi |
| Geographic coordinates: | -1.64856, 6.23446 (WGS84) |
|---|---|
| Elevation | 200 |
| Relative position | 150 KM NW OF ACCRA |
Political divisions (FIPS codes)
Ashanti(province)
Ghana(country)
Africa(continent)
Land(continent)
| Country | State |
|---|---|
| Ghana | Ashanti |
| Ghana | Ashanti |
| Commodity | Importance |
|---|---|
| Gold | Primary |
| Silver | Secondary |
| Materials | Type of material |
|---|---|
| Galena | Ore |
| Gold | Ore |
| Pyrite | Ore |
| Pyrrhotite | Ore |
| Albite | Gangue |
| Ankerite | Gangue |
| Graphite | Gangue |
| Quartz | Gangue |
| Sericite | Gangue |
| Result | AVERAGE GRADE IS ABOUT 1 OZ AU/TON. |
|---|
| Host or associated | Associated | ||||
|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Mafic Intrusive Rock | ||||
| |||||
| Host or associated | Host |
|---|---|
| Rock type | Metamorphic Rock > Schist |
| Rock unit name | Birrimian Formation |
| Rock description | Birrimian Formation |
| (1) | -1.64856, 6.23446 |
|---|
| Type of structure | Local |
|---|---|
| Structure description | Shear Runs Along Strike North To Northeast, Sub Vertical |
| General form | LENSES |
|---|---|
| Strike | N-NE |
| Dip | STEEP |
| Thickness | 12.19M |
| Length | 304.8M |
| Development status | Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Year of first production | 1893 |
| District name | Ashanti, Obuasi |
|---|
| Type | Owner-Operator |
|---|---|
| Owner | Ashanti Goldfields Corp. Ltd. |
| Year | 1978 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Material | AU ORE | ||||||||||||||
| Accuracy | Accurate | ||||||||||||||
| Description | Ap_Grade: ^7.5 D/T Percent | ||||||||||||||
| |||||||||||||||
| Type | In-situ | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Estimate year | 1986 | ||||||||||||||
| Total resources | 6200000000mt ore | ||||||||||||||
| |||||||||||||||
| Type | In-situ | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Estimate year | 1978 | ||||||||||||||
| |||||||||||||||
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | W032774 |
DEKUN, NICOLAS, 1965, MINERAL RESOURCES OF AFRICA: ELSEVIER PUB. CO., AMSTERDAM, 740 P.
MM 1980; E/MJ 1978; WAR MINERALS REPORT 1976-1977
MINING MAGAZINE, JANUARY, 1987, P. 75.
KESSE, G.O., 1984, THE OCCURRENCE OF GOLD IN GHANA, IN FOSTER, R.P., ED., GOLD '82: THE GEOLOGY, GEOCHEMISTRY AND GENESIS OF GOLD DEPOSITS: GEOLOGICAL SURVEY OF ZIMBABWE SPECIAL PUBLICATION 1, P. 645-660.
E/MJ 1978; WAR MINERALS REPORT 1976-1977
MINING MAGAZINE, 1987
| Subject category | Comment text |
|---|---|
| Deposit | BRITISH SOLDIERS LOOTED (OPERATING MINE) ASHANTI CORP MINES INCLUDE: COTE D'OR JUSTICES, AYEINM, OLD CHIEF, TOMCOLLINS, ASHATI AND KOKORTASNIA |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-JUN-1980 | Gassaway, Judith S. | U.S. Geological Survey | |
| Updater | 01-MAR-1988 | Orris, Greta J. | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.