Log In Register

Language:

About Support Us Photos Geology Discussions Search Learn More

Home Page About Mindat The Mindat Manual History of Mindat Copyright Status Who We Are Our Science Mindat Newsletter [Free Download]Contact Us

Donate to Mindat Sponsor a Page Corporate Sponsorship Sponsored Pages

Learning Center What Is a Mineral?The Most Common Minerals on Earth Information for Educators Mindat Articles Mindat Newsletter [Free Download]The Elements The Mineral Quiz

Search Form Minerals by Properties Minerals by Chemistry Mineral Visual Explorer Advanced Locality Search Random Mineral Random Locality Search by minID Minerals by Country Alphabetical Mineral Index Alphabetical Locality Search Mineral Association Search List of Countries Localities Near Me Photo Search Search Articles Search Glossary The Rock H. Currier Digital Library More Search Options

The Mindat Manual Add a New Photo Rate Photos Locality Edit Report Coordinate Completion Report Add Glossary Item

Minerals Petrology Fossils Meteorites Geologic Time

Mining Companies Statistics Mineral Museums Clubs & Organizations Mineral Shows & Events Device Settings Time Machine

Read Discussions Identification Request

Photo Search Photo Galleries Search by Colour Photo Colour Explorer New Photos Today New Photos Yesterday Members' Photo Galleries Past Photo of the Day Gallery Photography

Fennell pit, Omai gold mine, Omai, Cuyuni-Mazaruni Region, Guyana i
Regional Level Types
Fennell pit Pit
Omai gold mine Mine
Omai - not defined -
Cuyuni-Mazaruni Region Region
Guyana Country

This page is currently not sponsored. Click here to sponsor this page.

Photos Maps Search

Map Pages Nearest Localities

Mineral Search Similar Localities Nearest Localities Predictive Mineralogy Search Google

Latitude & Longitude (WGS84):

5° 26' 39'' North , 58° 45' 49'' West

Latitude & Longitude (decimal):

5.44424,-58.76375

G#: d8ynyz1e1

Type:

Köppen climate type:

Af : Tropical rainforest climate

Nearest Settlements:

Place	Population	Distance
Mahdia	4,200 (2013)	47.1km

Mindat Locality ID:

204524

Long-form identifier:

mindat:1:2:204524:8

GUID (UUID V4):

0

A water filled pit.

Select Mineral List Type

Standard Detailed Gallery Strunz 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

References:

Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.

Formula: Na(AlSi₃O₈)

References:

Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.

Formula: PbTe

References:

Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.

Formula: Ca(Fe²⁺,Mg)(CO₃)₂

References:

Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.

Formula: AuTe₂

References:

Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.

Formula: CaCO₃

References:

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

References:

Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.

ⓘ 'Chlorite Group'

References:

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

References:

Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.

Formula: (CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)

References:

Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.

Formula: PbS

References:

Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.

Formula: Fe₂O₃

References:

Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.

Formula: Ag₂Te

References:

Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.

Formula: Fe²⁺Fe³⁺₂O₄

References:

Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.

Formula: NiTe₂

References:

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

References:

Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.

Formula: KAl₂(AlSi₃O₁₀)(OH)₂

References:

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

References:

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

References:

Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.

ⓘ Native Copper

Formula: Cu

References:

Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.

ⓘ Native Gold

Formula: Au

References:

Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.

Voicu, G., Bardoux, M., Stevenson, R., Jébrak, M. (2000) Nd and Sr isotope study of hydrothermal scheelite and host rocks at Omai, Guiana Shield: implications for ore fluid source and flow path during the formation of orogenic gold deposits. Mineralium Deposita, 35 (4) 302-314 doi:10.1007/s001260050243

Formula: Ag₃AuTe₂

References:

Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.

Formula: FeS₂

References:

Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.

Formula: Fe_1-xS

References:

Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.

Formula: SiO₂

References:

Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.

Voicu, G., Bardoux, M., Stevenson, R., Jébrak, M. (2000) Nd and Sr isotope study of hydrothermal scheelite and host rocks at Omai, Guiana Shield: implications for ore fluid source and flow path during the formation of orogenic gold deposits. Mineralium Deposita, 35 (4) 302-314 doi:10.1007/s001260050243

ⓘ Quartz var. Milky Quartz

Formula: SiO₂

References:

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

References:

Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.

Formula: TiO₂

References:

Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.

Formula: Ca(WO₄)

References:

Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.

Voicu, G., Bardoux, M., Stevenson, R., Jébrak, M. (2000) Nd and Sr isotope study of hydrothermal scheelite and host rocks at Omai, Guiana Shield: implications for ore fluid source and flow path during the formation of orogenic gold deposits. Mineralium Deposita, 35 (4) 302-314 doi:10.1007/s001260050243

Formula: ZnS

References:

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

References:

Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.

ⓘ 'Tourmaline'

Formula: AD₃G₆ (T₆O₁₈)(BO₃)₃X₃Z

References:

Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.

Formula: AgBiTe₂

References:

Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘ	Native Copper	1.AA.05	Cu
ⓘ	Native Gold	1.AA.05	Au
Group 2 - Sulphides and Sulfosalts
ⓘ	Hessite	2.BA.60	Ag₂Te
ⓘ	Petzite	2.BA.75	Ag₃AuTe₂
ⓘ	Coloradoite	2.CB.05a	HgTe
ⓘ	Sphalerite	2.CB.05a	ZnS
ⓘ	Chalcopyrite	2.CB.10a	CuFeS₂
ⓘ	Pyrrhotite	2.CC.10	Fe_1-xS
ⓘ	Altaite	2.CD.10	PbTe
ⓘ	Galena	2.CD.10	PbS
ⓘ	Tellurobismuthite	2.DC.05	Bi₂Te₃
ⓘ	Calaverite	2.EA.10	AuTe₂
ⓘ	Melonite	2.EA.20	NiTe₂
ⓘ	Molybdenite	2.EA.30	MoS₂
ⓘ	Pyrite	2.EB.05a	FeS₂
ⓘ	Aikinite ?	2.HB.05a	PbCuBiS₃
ⓘ	Nagyágite ?	2.HB.20a	[Pb₃(Pb,Sb)₃S₆](Au,Te)₃
ⓘ	Volynskite	2.JA.20	AgBiTe₂
Group 4 - Oxides and Hydroxides
ⓘ	Magnetite	4.BB.05	Fe²⁺Fe³⁺₂O₄
ⓘ	Hematite	4.CB.05	Fe₂O₃
ⓘ	Quartz	4.DA.05	SiO₂
ⓘ	var. Smoky Quartz	4.DA.05	SiO₂
ⓘ	var. Milky Quartz	4.DA.05	SiO₂
ⓘ	Rutile	4.DB.05	TiO₂
Group 5 - Nitrates and Carbonates
ⓘ	Calcite	5.AB.05	CaCO₃
ⓘ	Ankerite	5.AB.10	Ca(Fe²⁺,Mg)(CO₃)₂
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘ	Scheelite	7.GA.05	Ca(WO₄)
Group 9 - Silicates
ⓘ	Epidote	9.BG.05a	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
ⓘ	Muscovite	9.EC.15	KAl₂(AlSi₃O₁₀)(OH)₂
ⓘ	var. Sericite	9.EC.15	KAl₂(AlSi₃O₁₀)(OH)₂
ⓘ	Albite	9.FA.35	Na(AlSi₃O₈)
Unclassified
ⓘ	'Chlorite Group'	-
ⓘ	'Tourmaline'	-	AD₃G₆ (T₆O₁₈)(BO₃)₃X₃Z

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
H	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
H	ⓘ Muscovite var. Sericite	KAl₂(AlSi₃O₁₀)(OH)₂
B	Boron
B	ⓘ Tourmaline	AD₃G₆ (T₆O₁₈)(BO₃)₃X₃Z
C	Carbon
C	ⓘ Ankerite	Ca(Fe²⁺,Mg)(CO₃)₂
C	ⓘ Calcite	CaCO₃
O	Oxygen
O	ⓘ Albite	Na(AlSi₃O₈)
O	ⓘ Ankerite	Ca(Fe²⁺,Mg)(CO₃)₂
O	ⓘ Calcite	CaCO₃
O	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
O	ⓘ Hematite	Fe₂O₃
O	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
O	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
O	ⓘ Quartz	SiO₂
O	ⓘ Rutile	TiO₂
O	ⓘ Scheelite	Ca(WO₄)
O	ⓘ Quartz var. Smoky Quartz	SiO₂
O	ⓘ Tourmaline	AD₃G₆ (T₆O₁₈)(BO₃)₃X₃Z
O	ⓘ Quartz var. Milky Quartz	SiO₂
O	ⓘ Muscovite var. Sericite	KAl₂(AlSi₃O₁₀)(OH)₂
Na	Sodium
Na	ⓘ Albite	Na(AlSi₃O₈)
Mg	Magnesium
Mg	ⓘ Ankerite	Ca(Fe²⁺,Mg)(CO₃)₂
Al	Aluminium
Al	ⓘ Albite	Na(AlSi₃O₈)
Al	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Al	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Al	ⓘ Muscovite var. Sericite	KAl₂(AlSi₃O₁₀)(OH)₂
Si	Silicon
Si	ⓘ Albite	Na(AlSi₃O₈)
Si	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Si	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Si	ⓘ Quartz	SiO₂
Si	ⓘ Quartz var. Smoky Quartz	SiO₂
Si	ⓘ Quartz var. Milky Quartz	SiO₂
Si	ⓘ Muscovite var. Sericite	KAl₂(AlSi₃O₁₀)(OH)₂
S	Sulfur
S	ⓘ Aikinite	PbCuBiS₃
S	ⓘ Chalcopyrite	CuFeS₂
S	ⓘ Galena	PbS
S	ⓘ Molybdenite	MoS₂
S	ⓘ Nagyágite	[Pb₃(Pb,Sb)₃S₆](Au,Te)₃
S	ⓘ Pyrite	FeS₂
S	ⓘ Pyrrhotite	Fe_1-xS
S	ⓘ Sphalerite	ZnS
K	Potassium
K	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
K	ⓘ Muscovite var. Sericite	KAl₂(AlSi₃O₁₀)(OH)₂
Ca	Calcium
Ca	ⓘ Ankerite	Ca(Fe²⁺,Mg)(CO₃)₂
Ca	ⓘ Calcite	CaCO₃
Ca	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Ca	ⓘ Scheelite	Ca(WO₄)
Ti	Titanium
Ti	ⓘ Rutile	TiO₂
Fe	Iron
Fe	ⓘ Ankerite	Ca(Fe²⁺,Mg)(CO₃)₂
Fe	ⓘ Chalcopyrite	CuFeS₂
Fe	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Fe	ⓘ Hematite	Fe₂O₃
Fe	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
Fe	ⓘ Pyrite	FeS₂
Fe	ⓘ Pyrrhotite	Fe_1-xS
Ni	Nickel
Ni	ⓘ Melonite	NiTe₂
Cu	Copper
Cu	ⓘ Aikinite	PbCuBiS₃
Cu	ⓘ Chalcopyrite	CuFeS₂
Cu	ⓘ Native Copper	Cu
Zn	Zinc
Zn	ⓘ Sphalerite	ZnS
Mo	Molybdenum
Mo	ⓘ Molybdenite	MoS₂
Ag	Silver
Ag	ⓘ Hessite	Ag₂Te
Ag	ⓘ Petzite	Ag₃AuTe₂
Ag	ⓘ Volynskite	AgBiTe₂
Sb	Antimony
Sb	ⓘ Nagyágite	[Pb₃(Pb,Sb)₃S₆](Au,Te)₃
Te	Tellurium
Te	ⓘ Altaite	PbTe
Te	ⓘ Calaverite	AuTe₂
Te	ⓘ Coloradoite	HgTe
Te	ⓘ Hessite	Ag₂Te
Te	ⓘ Melonite	NiTe₂
Te	ⓘ Nagyágite	[Pb₃(Pb,Sb)₃S₆](Au,Te)₃
Te	ⓘ Petzite	Ag₃AuTe₂
Te	ⓘ Tellurobismuthite	Bi₂Te₃
Te	ⓘ Volynskite	AgBiTe₂
W	Tungsten
W	ⓘ Scheelite	Ca(WO₄)
Au	Gold
Au	ⓘ Calaverite	AuTe₂
Au	ⓘ Native Gold	Au
Au	ⓘ Nagyágite	[Pb₃(Pb,Sb)₃S₆](Au,Te)₃
Au	ⓘ Petzite	Ag₃AuTe₂
Hg	Mercury
Hg	ⓘ Coloradoite	HgTe
Pb	Lead
Pb	ⓘ Aikinite	PbCuBiS₃
Pb	ⓘ Altaite	PbTe
Pb	ⓘ Galena	PbS
Pb	ⓘ Nagyágite	[Pb₃(Pb,Sb)₃S₆](Au,Te)₃
Bi	Bismuth
Bi	ⓘ Aikinite	PbCuBiS₃
Bi	ⓘ Tellurobismuthite	Bi₂Te₃
Bi	ⓘ Volynskite	AgBiTe₂

Other Regions, Features and Areas containing this locality

South AmericaContinent

South America PlateTectonic Plate

Amazonian CratonCraton
Maroni-Itacaiunas BeltShield

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

Quick NavTop Commodities Mineral List Other Regions

Mindat.org® is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindat® and mindat.org® are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
Content on this site may not be used to train, fine-tune, or otherwise develop artificial intelligence or machine learning models without prior written permission - see our Terms & Conditions.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: October 19, 2026 20:16:52 Page updated: August 11, 2025 02:24:22

Go to top of page