| Deposit ID | 10056741 |
|---|---|
| MRDS ID | TC00808 |
| Record type | Site |
| Current site name | Omai Property |
| Alternate or previous names | Omai Intrusive Complex, Wenot Lake Zone, Alluvial Deposits, Omai Mine, Fennall Pit, Wenot Lake Pits. |
| Geographic coordinates: | -58.74931, 5.46797 (WGS84) |
|---|---|
| Location accuracy | 1000(meters) |
| Relative position | WEST BANK OF ESSEQUIBO RIVER, 225 KM SOUTHWEST OF GEORGETOWN, Estimate Given In Bertoni, Et Al (1991) |
Political divisions (FIPS codes)
Guyana(country)
South America(continent)
Land(continent)
| Country |
|---|
| Guyana |
| Commodity | Importance |
|---|---|
| Gold | Primary |
| Materials | Type of material |
|---|---|
| Chalcopyrite | Ore |
| Galena | Ore |
| Gold | Ore |
| Pyrite | Ore |
| Sphalerite | Ore |
| Albite | Gangue |
| Apatite | Gangue |
| Chlorite | Gangue |
| Quartz | Gangue |
| Model code | 273 |
|---|---|
| USGS model code | 36a |
| Deposit model name | Low-sulfide Au-quartz vein |
| Mark3 model number | 27 |
| Host or associated | Host |
|---|---|
| Rock type | Plutonic Rock > Mafic Intrusive Rock > Diorite |
| Host or associated | Host |
|---|---|
| Rock type | Plutonic Rock > Granitoid > Granite |
| (1) | -58.74931, 5.46797 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Ne Shear Zone |
| General form | VARIOUS |
|---|---|
| Strike | NE |
| Dip | 21 |
| Thickness | 250M |
| Length | 500M |
| Width | 400M |
| Depth to top | 4.5M |
| General form | VARIOUS |
|---|---|
| Dip | 21 |
| Thickness | 30M |
| Length | 1600M |
| Width | 200M |
| Development status | Producer |
|---|---|
| Commodity type | Metallic |
| Significant | No |
| Discovery year | 1890 |
| Year of first production | 1993 |
| District name | Potaro District (?) |
|---|
| Type | Owner |
|---|---|
| Owner | Cambior Inc. |
| Interest | 63 |
| Type | Owner |
|---|---|
| Owner | Golden Star Resources Ltd. |
| Interest | 30 |
| Type | Owner |
|---|---|
| Owner | Government Of Guyana |
| Interest | 5 |
| Type | Owner |
|---|---|
| Owner | Omai Gold Mines Ltd. |
| Type | In-situ | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Estimate year | 1950 | ||||||||||||||
| Total resources | 24680000mt ore | ||||||||||||||
| |||||||||||||||
| Type | In-situ | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Estimate year | 1990 | ||||||||||||||
| Total resources | 23945000mt ore | ||||||||||||||
| |||||||||||||||
| Type | In-situ | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Estimate year | 1992 | ||||||||||||||
| Total resources | 2000mt ore | ||||||||||||||
| |||||||||||||||
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | TC00808 |
BERTONI, C.H., SHAW, R.P., SINGH, R., MINAMOTO, J., AND RICHARDS, S.M., 1991, GEOLOGY AND GOLD MINERALIZATION OF THE OMAI PROPERTY, GUYANA, IN BRAZIL GOLD, '91 ED., E.A. LADEIRA, BALKEMA, ROTTERDAM, P. 767-771.
PAGE, N.J, SEPT. 1991, PERSONAL VISIT AND DISCUSSIONS WITH BERTONI.
BARNARD, F., 1990, GOLD RUSH ARRIVES IN GUIANA SHIELD: ENGINEERING AND MINING JOURNAL, V. 191, N. 8, P 57-63.
CAMBIOR, 1993, REPORT TO SHARE HOLDERS 1ST QUARTER 1993, P. 3-4.
OMAI GOLD MINES LIMITED, 1992, ANNUAL REPORT, P. 7-11.
WERNIUK, GEORGE, 1994, SUCCESS OF OMAI MINE BODES WELL FOR CAMBION: THE NORTHERN MINER, SEPT. 26, 1994, P. C6.
CAMBIOR, 1994, 3RD QUARTER REPORT TO SHARE HOLDERS, SEPT 30, 1994, P. 2-3.
CIMRI
BERTONI, ET AL, 1991; CAMBIOR (1993); WERNING (1994); CAMBIOR (1994).
BERTONI ET AL, 1991; EMJ, 1990, P. 59
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-OCT-91 | Page, Norman J. | U.S. Geological Survey | |
| Updater | 01-NOV-94 | Page, Norman J. | U.S. Geological Survey | |
| Updater | 02-MAR-95 | Page, Norman J. | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.