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Morila Mine, Sikasso Region, Malii
Regional Level Types
Morila MineMine
Sikasso RegionRegion
MaliCountry

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Latitude & Longitude (WGS84): 11° 40' 51'' North , 6° 50' 48'' West
Latitude & Longitude (decimal): 11.68090,-6.84689
GeoHash:G#: ef54knqnp
Owned/operated by:Randgold Resources (40%), AngloGold Ashanti Limited
Locality type:Mine
Köppen climate type:Aw : Tropical savanna, wet


An open pit gold mine 180 Km south of Bamako, in the Massigui (Bogouni) greenstone belt.

One of Mali's largest gold mines.

The gold mineralization is hosted in flat-lying meta-graywacke.

Note on the mineral list: Hammond et al. (2011) also mention very minor Sb–Bi ore minerals.

Planned to close in 2019.

Regions containing this locality

African PlateTectonic Plate
West AfricaUN Subregion

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


11 valid minerals.

Detailed Mineral List:

'Albite-Anorthite Series'
Arsenopyrite
Formula: FeAsS
Aurostibite
Formula: AuSb2
'Biotite'
Bismuth
Formula: Bi
'Feldspar Group'
Gold
Formula: Au
'Hornblende'
Ilmenite
Formula: Fe2+TiO3
Löllingite
Formula: FeAs2
Maldonite
Formula: Au2Bi
Pyrrhotite
Formula: Fe7S8
Quartz
Formula: SiO2
Tellurobismuthite
Formula: Bi2Te3
Titanite
Formula: CaTi(SiO4)O

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Bismuth1.CA.05Bi
Gold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
Arsenopyrite2.EB.20FeAsS
Aurostibite2.EB.05aAuSb2
Löllingite2.EB.15aFeAs2
Maldonite2.AA.40Au2Bi
Pyrrhotite2.CC.10Fe7S8
Tellurobismuthite2.DC.05Bi2Te3
Group 4 - Oxides and Hydroxides
Ilmenite4.CB.05Fe2+TiO3
Quartz4.DA.05SiO2
Group 9 - Silicates
Titanite9.AG.15CaTi(SiO4)O
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-
'Biotite'-
'Feldspar Group'-
'Hornblende'-

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Gold1.1.1.1Au
Maldonite1.1.3.1Au2Bi
Semi-metals and non-metals
Bismuth1.3.1.4Bi
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Pyrrhotite2.8.10.1Fe7S8
AmBnXp, with (m+n):p = 2:3
Tellurobismuthite2.11.7.2Bi2Te3
AmBnXp, with (m+n):p = 1:2
Arsenopyrite2.12.4.1FeAsS
Aurostibite2.12.1.11AuSb2
Löllingite2.12.2.9FeAs2
Group 4 - SIMPLE OXIDES
A2X3
Ilmenite4.3.5.1Fe2+TiO3
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Titanite52.4.3.1CaTi(SiO4)O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Albite-Anorthite Series'-
'Biotite'-
'Feldspar Group'-
'Hornblende'-

List of minerals for each chemical element

OOxygen
O QuartzSiO2
O TitaniteCaTi(SiO4)O
O IlmeniteFe2+TiO3
SiSilicon
Si QuartzSiO2
Si TitaniteCaTi(SiO4)O
SSulfur
S ArsenopyriteFeAsS
S PyrrhotiteFe7S8
CaCalcium
Ca TitaniteCaTi(SiO4)O
TiTitanium
Ti TitaniteCaTi(SiO4)O
Ti IlmeniteFe2+TiO3
FeIron
Fe ArsenopyriteFeAsS
Fe PyrrhotiteFe7S8
Fe LöllingiteFeAs2
Fe IlmeniteFe2+TiO3
AsArsenic
As ArsenopyriteFeAsS
As LöllingiteFeAs2
SbAntimony
Sb AurostibiteAuSb2
TeTellurium
Te TellurobismuthiteBi2Te3
AuGold
Au GoldAu
Au MaldoniteAu2Bi
Au AurostibiteAuSb2
BiBismuth
Bi BismuthBi
Bi MaldoniteAu2Bi
Bi TellurobismuthiteBi2Te3

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: 3188213
Paleoproterozoic intrusive rocks

Age: Proterozoic (1600 - 2500 Ma)

Lithology: Greywacke,conglomerate,argillite

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]

Rhyacian
2050 - 2300 Ma



ID: 3307226

Age: Rhyacian (2050 - 2300 Ma)

Lithology: Sedimentary and volcaniclastic

Reference: Thiéblemont, D. (ed.). New edition of the 1:10,000,000 geological map of Africa. CGMW-BRGM. [190]

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

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Napoleon Q. Hammond, Laurence Robb, Stewart Foya and Daizo Ishiyama (2011): Mineralogical, fluid inclusion and stable isotope characteristics of Birimian orogenic gold mineralization at the Morila Mine, Mali, West Africa. Ore Geology Reviews 39, 218-229.
McFarlane, C. R., Mavrogenes, J., Lentz, D., King, K., Allibone, A., & Holcombe, R. (2011). Geology and intrusion-related affinity of the Morila gold mine, southeast Mali. Economic Geology, 106(5), 727-750.


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