Commodities
PrimaryGold
Commodity typeM
Deposit
Model273: Low-sulfide Au-quartz vein
Deposit sizeY
Orebody formVARIOUS
Ore controlMore Highly Fractured Quartz Diorite Than Are The Enclosing Metavolcanic Rocks
Materials
Ore mineralsChalcopyrite, Galena, Gold, Pyrite, Sphalerite
GangueAlbite, Apatite, Chlorite, Quartz
Geology
Host rockDiorite,Granite
StructureNe Shear Zone
Tectonic settingGreenstone Belt Or Barama-Mazaruni Super Group
AlterationCarbonatization, Silicification, Sulfidation
Economic & production
Development statusProducer
First production1993
Discovery year1890
Identification
Deposit ID10056741
MRDS IDTC00808
Alternate namesOmai Intrusive Complex, Wenot Lake Zone, Alluvial Deposits, Omai Mine, Fennall Pit, Wenot Lake Pits.
RegionSA
Data scoreB
Coordinates5.46797, -58.74931
References
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.CIMRIBERTONI, ET AL, 1991; CAMBIOR (1993); WERNING (1994); CAMBIOR (1994).BERTONI ET AL, 1991; EMJ, 1990, P. 59