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Nsuta Mine (Insuta Mine; Nsuta-Gaywin Manganese concession; Nsuta-Wassaw), Tarkwa, Western Region, Ghana

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Metamorphic carbonate-type manganese deposit, discovered in 1914 and mined from an open pit since 1917. The deposit consists of a manganese oxide zone, which is now mined out, and an underlying manganese carbonate zone which was discovered in 1968.
Owned by the African Manganese Co. from 1923, then owned by Ghana National Manganese Corp. Produced 267,996 tons of ore (1984).
Located about 20 km SE of Tarkwa.



References:
- Rocks & Min.: 23:32;
- Bureau of Mines Mineral Trade Notes (Aug 1947).
- Mining Annual Review (1985): 449.
- Mücke, A., Dzigbodi-Adjimah, K., and Annor, A. (1999): Mineralogy, petrology, geochemistry and genesis of the Paleoproterozoic Birimian manganese-formation of Nsuta/Ghana. Mineralium Deposita 34, 297-311.





 Map Reference: 5°17'N , 1°58'W

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.



Mineral List:
  		•  Alabandite
    Mn
    2+
     
    		S
    Reference: [Mineralium Deposita Volume 34 Issue 3 (1999) pp 297-311]
  		•  Albite
    Na[AlSi
     
    3
    		O
     
    8
    		]
    Description: Accessory mineral in the metasedimentary host rocks.
    Reference: [Mücke, A., Dzigbodi-Adjimah, K., and Annor, A. (1999): Mineralium Deposita 34, 297-311.]
  		•  'Apatite'
    Description: Accessory mineral in the metasedimentary host rocks.
    Reference: [Mücke, A., Dzigbodi-Adjimah, K., and Annor, A. (1999): Mineralium Deposita 34, 297-311.]
  		•  Arsenopyrite
    FeAsS - (Fe
     
    0.90
    		Co
     
    0.10
    		)AsS
    Reference: [Mücke, A., Dzigbodi-Adjimah, K., and Annor, A. (1999): Mineralium Deposita 34, 297-311.]
  		•  Bornite
    Cu
     
    5
    		FeS
     
    4
    Reference: [Mücke, A., Dzigbodi-Adjimah, K., and Annor, A. (1999): Mineralium Deposita 34, 297-311.]
  		•  Brucite
    Mg(OH)
     
    2
    Reference: [Mineralium Deposita Volume 34 Issue 3 (1999) pp 297-311]
  		•  Calcite
    var: Manganoan Calcite
    (Ca,Mn)CO
     
    3
    Habit: Massive
    Description: Occurs in the metasedimentary host rocks.
    Reference: [Mücke, A., Dzigbodi-Adjimah, K., and Annor, A. (1999): Mineralium Deposita 34, 297-311.]
  		•  Chalcocite
    Cu
     
    2
    		S
    Reference: [Mücke, A., Dzigbodi-Adjimah, K., and Annor, A. (1999): Mineralium Deposita 34, 297-311.]
  		•  Chalcopyrite
    CuFeS
     
    2
    Reference: [Mücke, A., Dzigbodi-Adjimah, K., and Annor, A. (1999): Mineralium Deposita 34, 297-311.]
  		•  'Chlorite Group'
    Reference: [Mücke, A., Dzigbodi-Adjimah, K., and Annor, A. (1999): Mineralium Deposita 34, 297-311.]
  		•  Cryptomelane ?
    K(Mn
    4+
     
    		,Mn
    2+
     
    		)
     
    8
    		O
     
    16
    Reference: [Mücke, A., Dzigbodi-Adjimah, K., and Annor, A. (1999): Mineralium Deposita 34, 297-311.]
  		•  Cummingtonite
    [ ][Mg
     
    2
    		][Mg
     
    5
    		][(OH)
     
    2
    		|Si
     
    8
    		O
     
    22
    		]
    Reference: [AmMin 46:642]
  		•  Digenite
    Cu
     
    9
    		S
     
    5
    Reference: [Mücke, A., Dzigbodi-Adjimah, K., and Annor, A. (1999): Mineralium Deposita 34, 297-311.]
  		•  Dolomite
    CaMg(CO
     
    3
    		)
     
    2
    Habit: Massive
    Description: Occurs in the metasedimentary host rocks.
    Reference: [Mücke, A., Dzigbodi-Adjimah, K., and Annor, A. (1999): Mineralium Deposita 34, 297-311.]
  		•  Galaxite
    (Mn,Fe,Mg)(Al,Fe)
     
    2
    		O
     
    4
    Reference: [Mineralium Deposita Volume 34 Issue 3 (1999) pp 297-311]
  		•  Gersdorffite
    NiAsS
    Reference: [Mineralium Deposita Volume 34 Issue 3 (1999) pp 297-311]
  		•  Goethite
    α-Fe
    3+
     
    		O(OH)
    Reference: [Mücke, A., Dzigbodi-Adjimah, K., and Annor, A. (1999): Mineralium Deposita 34, 297-311.]
  		•  Ilmenite
    Fe
    2+
     
    		TiO
     
    3
    Reference: [Mücke, A., Dzigbodi-Adjimah, K., and Annor, A. (1999): Mineralium Deposita 34, 297-311.]
  		•  Jacobsite
    Mn
    2+
     
    		Fe
    3+
    2
    		O
     
    4
    Reference: [Mücke, A., Dzigbodi-Adjimah, K., and Annor, A. (1999): Mineralium Deposita 34, 297-311.]
  		•  Kutnohorite
    Ca(Mn,Mg,Fe)(CO
     
    3
    		)
     
    2
    Habit: Massive
    Description: Occurs in the metasedimentary host rocks.
    Reference: [Mücke, A., Dzigbodi-Adjimah, K., and Annor, A. (1999): Mineralium Deposita 34, 297-311.]
  		•  Linnaeite
    Co
    2+
     
    		Co
    3+
    2
    		S
     
    4
    Reference: [Mücke, A., Dzigbodi-Adjimah, K., and Annor, A. (1999): Mineralium Deposita 34, 297-311.]
  		•  Lithiophorite
    (Al,Li)MnO
     
    2
    		(OH)
     
    2
    Reference: [Mücke, A., Dzigbodi-Adjimah, K., and Annor, A. (1999): Mineralium Deposita 34, 297-311.]
  		•  Manganite
    Mn
    3+
     
    		O(OH)
    Reference: [Mineralium Deposita Volume 34 Issue 3 (1999) pp 297-311]
  		•  Manganosite
    MnO
    Reference: [Mücke, A., Dzigbodi-Adjimah, K., and Annor, A. (1999): Mineralium Deposita 34, 297-311.]
  		•  Millerite
    NiS
    Reference: [Mineralium Deposita Volume 34 Issue 3 (1999) pp 297-311]
  		•  Molybdenite
    MoS
     
    2
    Reference: [Mineralium Deposita Volume 34 Issue 3 (1999) pp 297-311]
  		•  Muscovite
    KAl
     
    2
    		[(OH)
     
    2
    		|AlSi
     
    3
    		O
     
    10
    		]
    Reference: [Mücke, A., Dzigbodi-Adjimah, K., and Annor, A. (1999): Mineralium Deposita 34, 297-311.]
  		•  Nickeline
    NiAs
    Reference: [Mineralium Deposita Volume 34 Issue 3 (1999) pp 297-311]
  		•  Nsutite (TL)
    (Mn
    4+
     
    		,Mn
    2+
     
    		)(O,OH)
     
    2
    Type Locality: Nsuta Mine (Insuta Mine; Nsuta-Gaywin Manganese concession; Nsuta-Wassaw), Tarkwa, Western Region, Ghana
    Reference: [Sorem, R. K. Cameron, E. N (1960), Manganese oxides and associated minerals of the Nsuta manganese deposits, Ghana, West Africa. Econ. Geol.,55, 278-310.]
    Site Photo
    Nsuta Mine (Insuta Mine; Nsuta-Gaywin Manganese concession; Nsuta-Wassaw), Tarkwa, Western Region, Ghana
    © 2008, JGW
  		•  Pentlandite
    (Fe,Ni)
     
    9
    		S
     
    8
    Habit: Exsolution bodies in pyrrhotite.
    Reference: [Mücke, A., Dzigbodi-Adjimah, K., and Annor, A. (1999): Mineralium Deposita 34, 297-311.]
  		•  Pyrite
    FeS
     
    2
    Reference: [Mücke, A., Dzigbodi-Adjimah, K., and Annor, A. (1999): Mineralium Deposita 34, 297-311.; Econ Geol (1996) 91:289-301]
  		•  Pyrochroite
    Mn(OH)
     
    2
    Reference: [Mineralium Deposita Volume 34 Issue 3 (1999) pp 297-311]
  		•  Pyrolusite
    MnO
     
    2
    Reference: [Mineralium Deposita Volume 34 Issue 3 (1999) pp 297-311]
  		•  Pyrrhotite
    Fe
     
    7
    		S
     
    8
    		, (-4M), also given as Fe
     
    1-x
    		S (x = 0 - 0.2)
    Habit: Microscopic grains
    Description: Occurs in the metasedimentary host rocks.
    Reference: [Mücke, A., Dzigbodi-Adjimah, K., and Annor, A. (1999): Mineralium Deposita 34, 297-311.]
  		•  Quartz
    SiO
     
    2
    Reference: [Mücke, A., Dzigbodi-Adjimah, K., and Annor, A. (1999): Mineralium Deposita 34, 297-311.]
  		•  Ramsdellite
    Mn
    4+
     
    		O
     
    2
    Reference: [Mücke, A., Dzigbodi-Adjimah, K., and Annor, A. (1999): Mineralium Deposita 34, 297-311.]
  		•  Rhodochrosite
    MnCO
     
    3
    Reference: [Mineralium Deposita Volume 34 Issue 3 (1999) pp 297-311]
  		•  Romanèchite ?
    (Ba,H
     
    2
    		O)
     
    2
    		Mn
     
    5
    		O
     
    10
    Reference: [Mücke, A., Dzigbodi-Adjimah, K., and Annor, A. (1999): Mineralium Deposita 34, 297-311.]
  		•  Rutile
    TiO
     
    2
    Reference: [Mücke, A., Dzigbodi-Adjimah, K., and Annor, A. (1999): Mineralium Deposita 34, 297-311.]
  		•  Spessartine
    Mn
    2+
    3
    		Al
     
    2
    		[SiO
     
    4
    		]
     
    3
    Reference: []
  		•  Sphalerite
    (Zn,Fe
    2+
     
    		)S
    Reference: [Mineralium Deposita Volume 34 Issue 3 (1999) pp 297-311]
  		•  Todorokite
    (Ca,K,Na,Mg,Ba,Mn)(Mn,Mg,Al)
     
    6
    		O
     
    12
    		·3H
     
    2
    		O
    Reference: [Mineralium Deposita Volume 34 Issue 3 (1999) pp 297-311]
  		•  'Tourmaline'
    AD
     
    3
    		G
     
    6
    		(BO
     
    3
    		)
     
    3
    		[T
     
    6
    		O
     
    18
    		]Y
     
    3
    		Z
    Description: Accessory mineral in the metasedimentary host rocks.
    Reference: [Mücke, A., Dzigbodi-Adjimah, K., and Annor, A. (1999): Mineralium Deposita 34, 297-311.]
  		•  'Wad'
    Reference: [Mineralium Deposita Volume 34 Issue 3 (1999) pp 297-311]


    44 entries listed. 39 valid minerals. 1 type locality (valid mineral).

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