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Fennell pit, Omai gold mine, Omai, Upper Takutu-Upper Essequibo Region, Guyanai
Regional Level Types
Fennell pitPit
Omai gold mineMine
Omai- not defined -
Upper Takutu-Upper Essequibo RegionRegion
GuyanaCountry

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Latitude & Longitude (WGS84): 5° 26' 39'' North , 58° 45' 49'' West
Latitude & Longitude (decimal): 5.44424,-58.76375
GeoHash:G#: d8ynyz1e1
Locality type:Pit
Köppen climate type:Af : Tropical rainforest climate
Nearest Settlements:
PlacePopulationDistance
Mahdia4,200 (2013)47.1km


A water filled pit.

Regions containing this locality

South America PlateTectonic Plate
South AmericaContinent
Amazonian Craton, South AmericaCraton

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


28 valid minerals.

Detailed Mineral List:

Aikinite ?
Formula: PbCuBiS3
Reference: Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.
Albite
Formula: Na(AlSi3O8)
Reference: Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.
Altaite
Formula: PbTe
Reference: Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.
Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
Reference: Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.
Calaverite
Formula: AuTe2
Reference: Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.
Calcite
Formula: CaCO3
Reference: Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.
Chalcopyrite
Formula: CuFeS2
Reference: Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.
'Chlorite Group'
Reference: Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.
Coloradoite
Formula: HgTe
Reference: Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.
Copper
Formula: Cu
Reference: Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.
Galena
Formula: PbS
Reference: Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.
Gold
Formula: Au
Reference: Voicu, G., Bardoux, M., Stevenson, R., and Jébrak, M. (2000): Mineralium Deposita 35, 302-314.; Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.
Hematite
Formula: Fe2O3
Reference: Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.
Hessite
Formula: Ag2Te
Reference: Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.
Melonite
Formula: NiTe2
Reference: Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.
Molybdenite
Formula: MoS2
Reference: Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.
Muscovite var: Sericite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.
Nagyágite ?
Formula: [Pb3(Pb,Sb)3S6](Au,Te)3
Reference: Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.
Petzite
Formula: Ag3AuTe2
Reference: Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.
Pyrite
Formula: FeS2
Reference: Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.
Pyrrhotite
Formula: Fe7S8
Reference: Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.
Quartz
Formula: SiO2
Reference: Voicu, G., Bardoux, M., Stevenson, R., and Jébrak, M. (2000): Mineralium Deposita 35, 302-314.; Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.
Quartz var: Milky Quartz
Formula: SiO2
Reference: Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.
Quartz var: Smoky Quartz
Formula: SiO2
Reference: Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.
Rutile
Formula: TiO2
Reference: Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.
Scheelite
Formula: Ca(WO4)
Reference: Voicu, G., Bardoux, M., Stevenson, R., and Jébrak, M. (2000): Mineralium Deposita 35, 302-314.; Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.
Sphalerite
Formula: ZnS
Reference: Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.
Tellurobismuthite
Formula: Bi2Te3
Reference: Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.
'Tourmaline'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Reference: Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.
Volynskite
Formula: AgBiTe2
Reference: Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Copper1.AA.05Cu
Gold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
Aikinite ?2.HB.05aPbCuBiS3
Altaite2.CD.10PbTe
Calaverite2.EA.10AuTe2
Chalcopyrite2.CB.10aCuFeS2
Coloradoite2.CB.05aHgTe
Galena2.CD.10PbS
Hessite2.BA.60Ag2Te
Melonite2.EA.20NiTe2
Molybdenite2.EA.30MoS2
Nagyágite ?2.HB.20a[Pb3(Pb,Sb)3S6](Au,Te)3
Petzite2.BA.75Ag3AuTe2
Pyrite2.EB.05aFeS2
Pyrrhotite2.CC.10Fe7S8
Sphalerite2.CB.05aZnS
Tellurobismuthite2.DC.05Bi2Te3
Volynskite2.JA.20AgBiTe2
Group 4 - Oxides and Hydroxides
Hematite4.CB.05Fe2O3
Magnetite4.BB.05Fe2+Fe3+2O4
Quartz4.DA.05SiO2
var: Milky Quartz4.DA.05SiO2
var: Smoky Quartz4.DA.05SiO2
Rutile4.DB.05TiO2
Group 5 - Nitrates and Carbonates
Ankerite5.AB.10Ca(Fe2+,Mg)(CO3)2
Calcite5.AB.05CaCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Scheelite7.GA.05Ca(WO4)
Group 9 - Silicates
Albite9.FA.35Na(AlSi3O8)
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var: Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Copper1.1.1.3Cu
Gold1.1.1.1Au
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Hessite2.4.2.1Ag2Te
Petzite2.4.3.3Ag3AuTe2
AmXp, with m:p = 1:1
Altaite2.8.1.3PbTe
Coloradoite2.8.2.5HgTe
Galena2.8.1.1PbS
Pyrrhotite2.8.10.1Fe7S8
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 2:3
Nagyágite ?2.11.10.1[Pb3(Pb,Sb)3S6](Au,Te)3
Tellurobismuthite2.11.7.2Bi2Te3
AmBnXp, with (m+n):p = 1:2
Calaverite2.12.13.2AuTe2
Melonite2.12.14.1NiTe2
Molybdenite2.12.10.1MoS2
Pyrite2.12.1.1FeS2
Group 3 - SULFOSALTS
ø = 3
Aikinite ?3.4.5.1PbCuBiS3
ø = 2
Volynskite3.7.1.3AgBiTe2
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
AX2
Rutile4.4.1.1TiO2
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
AB(XO3)2
Ankerite14.2.1.2Ca(Fe2+,Mg)(CO3)2
Group 48 - ANHYDROUS MOLYBDATES AND TUNGSTATES
AXO4
Scheelite48.1.2.1Ca(WO4)
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Epidote58.2.1a.7{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Albite76.1.3.1Na(AlSi3O8)
Unclassified Minerals, Mixtures, etc.
'Chlorite Group'-
Muscovite
var: Sericite
-KAl2(AlSi3O10)(OH)2
Quartz
var: Milky Quartz
-SiO2
var: Smoky Quartz-SiO2
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals for each chemical element

HHydrogen
H Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H MuscoviteKAl2(AlSi3O10)(OH)2
BBoron
B TourmalineA(D3)G6(T6O18)(BO3)3X3Z
CCarbon
C AnkeriteCa(Fe2+,Mg)(CO3)2
C CalciteCaCO3
OOxygen
O QuartzSiO2
O ScheeliteCa(WO4)
O Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
O AlbiteNa(AlSi3O8)
O AnkeriteCa(Fe2+,Mg)(CO3)2
O CalciteCaCO3
O HematiteFe2O3
O MagnetiteFe2+Fe23+O4
O TourmalineA(D3)G6(T6O18)(BO3)3X3Z
O Quartz (var: Smoky Quartz)SiO2
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O RutileTiO2
O Quartz (var: Milky Quartz)SiO2
O MuscoviteKAl2(AlSi3O10)(OH)2
NaSodium
Na AlbiteNa(AlSi3O8)
MgMagnesium
Mg AnkeriteCa(Fe2+,Mg)(CO3)2
AlAluminium
Al Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Al AlbiteNa(AlSi3O8)
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al MuscoviteKAl2(AlSi3O10)(OH)2
SiSilicon
Si QuartzSiO2
Si Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Si AlbiteNa(AlSi3O8)
Si Quartz (var: Smoky Quartz)SiO2
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si Quartz (var: Milky Quartz)SiO2
Si MuscoviteKAl2(AlSi3O10)(OH)2
SSulfur
S PyriteFeS2
S ChalcopyriteCuFeS2
S PyrrhotiteFe7S8
S SphaleriteZnS
S MolybdeniteMoS2
S GalenaPbS
S AikinitePbCuBiS3
S Nagyágite[Pb3(Pb,Sb)3S6](Au,Te)3
KPotassium
K Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca ScheeliteCa(WO4)
Ca AnkeriteCa(Fe2+,Mg)(CO3)2
Ca CalciteCaCO3
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
TiTitanium
Ti RutileTiO2
FeIron
Fe AnkeriteCa(Fe2+,Mg)(CO3)2
Fe PyriteFeS2
Fe ChalcopyriteCuFeS2
Fe PyrrhotiteFe7S8
Fe HematiteFe2O3
Fe MagnetiteFe2+Fe23+O4
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
NiNickel
Ni MeloniteNiTe2
CuCopper
Cu ChalcopyriteCuFeS2
Cu CopperCu
Cu AikinitePbCuBiS3
ZnZinc
Zn SphaleriteZnS
MoMolybdenum
Mo MolybdeniteMoS2
AgSilver
Ag HessiteAg2Te
Ag PetziteAg3AuTe2
Ag VolynskiteAgBiTe2
SbAntimony
Sb Nagyágite[Pb3(Pb,Sb)3S6](Au,Te)3
TeTellurium
Te MeloniteNiTe2
Te CalaveriteAuTe2
Te HessiteAg2Te
Te PetziteAg3AuTe2
Te AltaitePbTe
Te ColoradoiteHgTe
Te TellurobismuthiteBi2Te3
Te VolynskiteAgBiTe2
Te Nagyágite[Pb3(Pb,Sb)3S6](Au,Te)3
WTungsten
W ScheeliteCa(WO4)
AuGold
Au GoldAu
Au CalaveriteAuTe2
Au PetziteAg3AuTe2
Au Nagyágite[Pb3(Pb,Sb)3S6](Au,Te)3
HgMercury
Hg ColoradoiteHgTe
PbLead
Pb GalenaPbS
Pb AltaitePbTe
Pb AikinitePbCuBiS3
Pb Nagyágite[Pb3(Pb,Sb)3S6](Au,Te)3
BiBismuth
Bi TellurobismuthiteBi2Te3
Bi VolynskiteAgBiTe2
Bi AikinitePbCuBiS3

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Paleoproterozoic
1600 - 2500 Ma



ID: 3188310
Paleoproterozoic crystalline metamorphic rocks

Age: Proterozoic (1600 - 2500 Ma)

Lithology: Low-medium grade metasedimentary/metavolcanic schist

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License


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