Seven open pits up to 40m deep.
The Pb-Zn mineralized veins are hosted in shales and sandstones facies of the Asu River Group. The host rock generally strike ENE-SWS and NE-SE, steeply dipping 25°–40° NW-SE and typically forming en-echelon pattern. The mineralized veins are nearly perpendicular to the general strike of the host rock in the N-S and NW-SE direction. The peculiar feature of the Ishiagu veins is the presence of micro-diorites in form of sills and irregular bodies. These intrusions are closely associated with ore bodies where recrystallization of vein constituent is observed. The veins are lenticular usually 0.25–5 m wide and length of 20–150 m. The absence of wall rock alteration indicates a low temperature mineralizing fluids.

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Standard Detailed Gallery Strunz Chemical Elements

Commodity List

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

ⓘ Lead

ⓘ Zinc

Mineral List

ⓘ 'Unnamed (Cu-Mn-Sn Sulphide)'

11 valid minerals.

Rock Types Recorded

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Anglesite

Formula: PbSO₄

References:

Ezepue, M. C. (1984). The geologic setting of lead-zinc deposits at Ishiagu, southeastern Nigeria. Journal of African Earth Sciences (1983), 2(2), 97-101.

ⓘ Azurite

Formula: Cu₃(CO₃)₂(OH)₂

References:

Ezepue, M. C. (1984). The geologic setting of lead-zinc deposits at Ishiagu, southeastern Nigeria. Journal of African Earth Sciences (1983), 2(2), 97-101.

ⓘ Cerussite

Formula: PbCO₃

References:

Ezepue, M. C. (1984). The geologic setting of lead-zinc deposits at Ishiagu, southeastern Nigeria. Journal of African Earth Sciences (1983), 2(2), 97-101.

ⓘ Chalcopyrite

Formula: CuFeS₂

References:

Ezepue, M. C. (1984). The geologic setting of lead-zinc deposits at Ishiagu, southeastern Nigeria. Journal of African Earth Sciences (1983), 2(2), 97-101.

Olubambi, P. A., Ndlovu, S., Potgieter, J. H., & Borode, J. O. (2008). Mineralogical characterization of Ishiagu (Nigeria) complex sulphide ore. International Journal of Mineral Processing, 87(3-4), 83-89.

ⓘ Galena

Formula: PbS

References:

Ezepue, M. C. (1984). The geologic setting of lead-zinc deposits at Ishiagu, southeastern Nigeria. Journal of African Earth Sciences (1983), 2(2), 97-101.

Bute, Saleh Ibrahim, Zhou, Jia-Xi, Luo, Kai, Girei, Musa Bala, Peter, Raymond Tabale (2024) Pb-Zn-Ba deposits in the Nigerian Benue Trough: A synthesis on deposits classification and genetic model. Ore Geology Reviews, 166. 105947 doi:10.1016/j.oregeorev.2024.105947

ⓘ 'Limonite'

References:

Ezepue, M. C. (1984). The geologic setting of lead-zinc deposits at Ishiagu, southeastern Nigeria. Journal of African Earth Sciences (1983), 2(2), 97-101.

ⓘ Malachite

Formula: Cu₂(CO₃)(OH)₂

References:

Ezepue, M. C. (1984). The geologic setting of lead-zinc deposits at Ishiagu, southeastern Nigeria. Journal of African Earth Sciences (1983), 2(2), 97-101.

ⓘ Pyrite

Formula: FeS₂

References:

Ezepue, M. C. (1984). The geologic setting of lead-zinc deposits at Ishiagu, southeastern Nigeria. Journal of African Earth Sciences (1983), 2(2), 97-101.

ⓘ Quartz

Formula: SiO₂

References:

Ezepue, M. C. (1984). The geologic setting of lead-zinc deposits at Ishiagu, southeastern Nigeria. Journal of African Earth Sciences (1983), 2(2), 97-101.

ⓘ Siderite

Formula: FeCO₃

References:

Ezepue, M. C. (1984). The geologic setting of lead-zinc deposits at Ishiagu, southeastern Nigeria. Journal of African Earth Sciences (1983), 2(2), 97-101.

ⓘ Sphalerite

Formula: ZnS

References:

Ezepue, M. C., Dunham, A. C. (1983) The composition of sphalerites from Ishiagu, E. Nigeria. Mineralogical Magazine, 47 (344) 408-411 doi:10.1180/minmag.1983.047.344.24

Ezepue, M. C. (1984). The geologic setting of lead-zinc deposits at Ishiagu, southeastern Nigeria. Journal of African Earth Sciences (1983), 2(2), 97-101.

ⓘ Stannite

Formula: Cu₂FeSnS₄

References:

ⓘ 'Unnamed (Cu-Mn-Sn Sulphide)'

Formula: Cu₂MnSnS₄

References:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘ	Sphalerite	2.CB.05a	ZnS
ⓘ	'Unnamed (Cu-Mn-Sn Sulphide)'	2.CB.07a	Cu₂MnSnS₄
ⓘ	Chalcopyrite	2.CB.10a	CuFeS₂
ⓘ	Stannite	2.CB.15a	Cu₂FeSnS₄
ⓘ	Galena	2.CD.10	PbS
ⓘ	Pyrite	2.EB.05a	FeS₂
Group 4 - Oxides and Hydroxides
ⓘ	Quartz	4.DA.05	SiO₂
Group 5 - Nitrates and Carbonates
ⓘ	Siderite	5.AB.05	FeCO₃
ⓘ	Cerussite	5.AB.15	PbCO₃
ⓘ	Azurite	5.BA.05	Cu₃(CO₃)₂(OH)₂
ⓘ	Malachite	5.BA.10	Cu₂(CO₃)(OH)₂
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘ	Anglesite	7.AD.35	PbSO₄
Unclassified
ⓘ	'Limonite'	-

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Azurite	Cu₃(CO₃)₂(OH)₂
H	ⓘ Malachite	Cu₂(CO₃)(OH)₂
C	Carbon
C	ⓘ Azurite	Cu₃(CO₃)₂(OH)₂
C	ⓘ Cerussite	PbCO₃
C	ⓘ Malachite	Cu₂(CO₃)(OH)₂
C	ⓘ Siderite	FeCO₃
O	Oxygen
O	ⓘ Anglesite	PbSO₄
O	ⓘ Azurite	Cu₃(CO₃)₂(OH)₂
O	ⓘ Cerussite	PbCO₃
O	ⓘ Malachite	Cu₂(CO₃)(OH)₂
O	ⓘ Quartz	SiO₂
O	ⓘ Siderite	FeCO₃
Si	Silicon
Si	ⓘ Quartz	SiO₂
S	Sulfur
S	ⓘ Anglesite	PbSO₄
S	ⓘ Chalcopyrite	CuFeS₂
S	ⓘ Galena	PbS
S	ⓘ Pyrite	FeS₂
S	ⓘ Sphalerite	ZnS
S	ⓘ Stannite	Cu₂FeSnS₄
S	ⓘ Unnamed (Cu-Mn-Sn Sulphide)	Cu₂MnSnS₄
Mn	Manganese
Mn	ⓘ Unnamed (Cu-Mn-Sn Sulphide)	Cu₂MnSnS₄
Fe	Iron
Fe	ⓘ Chalcopyrite	CuFeS₂
Fe	ⓘ Pyrite	FeS₂
Fe	ⓘ Siderite	FeCO₃
Fe	ⓘ Stannite	Cu₂FeSnS₄
Cu	Copper
Cu	ⓘ Azurite	Cu₃(CO₃)₂(OH)₂
Cu	ⓘ Chalcopyrite	CuFeS₂
Cu	ⓘ Malachite	Cu₂(CO₃)(OH)₂
Cu	ⓘ Stannite	Cu₂FeSnS₄
Cu	ⓘ Unnamed (Cu-Mn-Sn Sulphide)	Cu₂MnSnS₄
Zn	Zinc
Zn	ⓘ Sphalerite	ZnS
Sn	Tin
Sn	ⓘ Stannite	Cu₂FeSnS₄
Sn	ⓘ Unnamed (Cu-Mn-Sn Sulphide)	Cu₂MnSnS₄
Pb	Lead
Pb	ⓘ Anglesite	PbSO₄
Pb	ⓘ Cerussite	PbCO₃
Pb	ⓘ Galena	PbS

Other Regions, Features and Areas containing this locality

AfricaContinent

African PlateTectonic Plate

Benue Trough basinBasin
Central African OrogenOrogenic Belt

West AfricaUN Subregion

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.

References

Olade, M. A., & Morton, R. D. (1980). Temperature of ore formation and origin of the Ishiagu lead-zinc deposit, southern Benue Trough, Nigeria. J. Min. Geol, 17, 119-127.

Ezepue, M. C., Dunham, A. C. (1983) The composition of sphalerites from Ishiagu, E. Nigeria. Mineralogical Magazine, 47 (344) 408-411 doi:10.1180/minmag.1983.047.344.24

Ezepue, M. C. (1984). The geologic setting of lead-zinc deposits at Ishiagu, southeastern Nigeria. Journal of African Earth Sciences (1983), 2(2), 97-101.

Olade, M.A., Morton, R.D. (1985) Origin of lead-zinc mineralization in the southern Benue Trough, Nigeria - Fluid inclusion and trace element studies. Mineralium Deposita, 20 (2). 76-80 doi:10.1007/bf00204313

Akande, O., Zentelli, M., Reynolds, P. H. (1989) Fluid inclusion and stable isotope studies of Pb-Zn-fluorite-barite mineralization in the lower and middle Benue Trough, Nigeria. Mineralium Deposita, 24 (3) 183-191 doi:10.1007/bf00206441

Chukwu, E. (2011). Small scale mining and heavy metals pollution of agricultural soils: The case of Ishiagu Mining District, South Eastern Nigeria. Journal of Geology and Mining Research, 3(4), 87-104.

Okonkwo, A. C., Okeke, P. O., & Opara, A. I. (2013). Evaluation of Self-Potential Anomalies over Sulphide Ore Deposits at Ishiagu, Ebonyi State, Southeastern Nigeria. Int. Res. J. Geol. Min, 4, 9-19.

P.O., Odika,; O.L., Anike,; A.G., Onwuemesi,; N.F., Odika,; R.B., Ejeckam, (2020) Assessment of Environmental Geochemistry of Lead-Zinc Mining at Ishiagu Area, Lower Benue Trough, Southeastern Nigeria. Earth Science Research, 9 (1). 31-44 doi:10.5539/esr.v9n1p31

[1]Bute, Saleh Ibrahim, Zhou, Jia-Xi, Luo, Kai, Girei, Musa Bala, Peter, Raymond Tabale (2024) Pb-Zn-Ba deposits in the Nigerian Benue Trough: A synthesis on deposits classification and genetic model. Ore Geology Reviews, 166. 105947 doi:10.1016/j.oregeorev.2024.105947

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Ishiagu lead-zinc deposit, Nkanu East, Enugu, NigeriaiRegional Level TypesIshiagu lead-zinc depositDeposit Nkanu EastLocal Government Area EnuguState NigeriaCountry function showexplain() { $("#locexplain").toggle(); if (typeof movemap === "function") movemap(); }

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Commodity List

Mineral List

Rock Types Recorded

Select Rock List Type

Detailed Mineral List:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

List of minerals for each chemical element

Other Regions, Features and Areas containing this locality

References

Ishiagu lead-zinc deposit, Nkanu East, Enugu, Nigeria i
Regional Level Types
Ishiagu lead-zinc deposit Deposit
Nkanu East Local Government Area
Enugu State
Nigeria Country