Mineral Evolution Database
Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.
Mineral locality data provided by mindat.org



The Mineral Evolution database is currently under development.

The goal of this page is to present localities at which the mineral is found, and estimates of the oldest possible geologic age of the minerals at these localities.


Locality Name:
Ashanti Mine, Obuasi, Ashanti Gold Belt, Western Region, Ghana

Oldest recorded age at locality: 2157
Youngest recorded age at locality: 2091

mindat Locality ID: 9929
mindat URL: http://www.mindat.org/loc-9929.html

Tectonic Settings:

Total number of sublocalities beneath "Ashanti Mine, Obuasi, Ashanti Gold Belt, Western Region, Ghana": 0
Total number of bottom-level sublocalities: 0

Latitude: 6°14'0"N
Longitude: 1°39'"W
Decimal Degree (lat, lon): 6.2333333333333,-1.65
AThis mineral is Anthropogenic.
GThis mineral is directly dated.
BThis mineral is reported as having this age.
YThis mineral is using an age reported as an element mineralization period.
OThis mineral is using an age calculated from all data at the locality.
RThe age displayed for this mineral originates from a different, non-child locality.
PThe age displayed for this mineral is the range of ages for this mineral at all of this locality's children.
This mineral's age has not yet been recorded.

This Mineral list contains entries from this locality, including sub-localities. Minerals in bold are reported by mindat.org as occurring directly at this locality, and do not occur at any children (sublocalities) of this locality.

Elements at this locality, including sub-localities: Ag Al As Au C Ca Cu Fe H Hg K Mn Ni O Pb S Sb Si Te Ti Zn 

Elements from minerals reported directly at this locality: Ag Al As Au C Ca Cu Fe H Hg K Mg Mn Ni O Pb S Sb Si Te Ti Zn 

Structural Groups for minerals in this locality: 
ArsenoliteArsenopyriteBournoniteCalciteChalcopyriteClayCopperCorundumDiasporeKaňkite
LöllingiteMarcasiteMeloniteMicaNickelineNonePyriteQuartzRocksaltRutile
SphaleriteStibniteTetrahedrite

43 IMA Minerals at location:
Alabandite  (*)Altaite  (*)Ankerite  (*)Arsenolite  (*)Arsenopyrite  (*)
Aurostibite  (*)Bornite  (*)Boulangerite  (*)Bournonite  (*)Bukovskýite  (*)
Calaverite  (*)Calcite  (*)Chalcocite  (*)Chalcopyrite  (*)Coloradoite  (*)
Freibergite  (*)Galena  (*)Goethite  (*)Gold  (*)Graphite  (*)
Hematite  (*)Henryite  (*)Hessite  (*)Kaňkite  (*)Kostovite  (*)
Löllingite  (*)Marcasite  (*)Muscovite  (*)Gersdorffite-Pa3  (*)Petzite  (*)
Pitticite  (*)Pyrite  (*)Pyrrhotite  (*)Quartz  (*)Rickardite  (*)
Rutile  (*)Scorodite  (*)Sphalerite  (*)Stibnite  (*)Stützite  (*)
Sylvanite  (*)Tetrahedrite-(Zn)  (*)Weissite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Alabandite  (*)RocksaltMnS215720910312
Altaite  (*)RocksaltPbTe215720910489
Ankerite  (*)NoneCa(Fe2+,Mg)(CO3)22157209103092
Arsenolite  (*)ArsenoliteAs2O3215720910231
Arsenopyrite  (*)ArsenopyriteFeAsS2157209109052
Aurostibite  (*)PyriteAuSb221572153073
Bornite  (*)NoneCu5FeS42157209105516
Boulangerite  (*)NonePb5Sb4S11215720910843
Bournonite  (*)BournoniteCuPbSbS32157209101089
Bukovskýite  (*)NoneFe3+2(AsO4)(SO4)(OH)·7H2O21572091013
Calaverite  (*)MeloniteAuTe2215721530361
Calcite  (*)CalciteCa(CO3)21572091027770
Chalcocite  (*)NoneCu2S2157209105707
Chalcopyrite  (*)ChalcopyriteCuFeS221572091027198
Coloradoite  (*)SphaleriteHgTe215720910169
Freibergite  (*)TetrahedriteAg6[Cu4Fe2]Sb4S12215720910663
Galena  (*)RocksaltPbS21572091024243
Goethite  (*)DiasporeFeO(OH)2157209107437
Gold  (*)CopperAu21572153030554
Graphite  (*)NoneC2157209102812
Hematite  (*)CorundumFe2O321572091014640
Henryite  (*)None(Cu,Ag)3+xTe2 (x~0.4)2157209104
Hessite  (*)NoneAg2Te215720910804
Kaňkite  (*)KaňkiteFe3+(AsO4)·3.5H2O21572091038
Kostovite  (*)NoneAuCuTe421572153021
Löllingite  (*)LöllingiteFeAs2215720910762
Marcasite  (*)MarcasiteFeS22157209105674
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)221572091017380
Gersdorffite-Pa3  (*)PyriteNiAsS215720910767
Petzite  (*)NoneAg3AuTe2215721530409
Pitticite  (*)None[Fe,AsO4,SO4,H2O] (?)215720910140
Pyrite  (*)PyriteFeS221572091039462
Pyrrhotite  (*)NickelineFe7S82157209109056
Quartz  (*)QuartzSiO221572091061156
Rickardite  (*)NoneCu3-xTe221572091052
Rutile  (*)RutileTiO22105209105614
Scorodite  (*)NoneFe3+(AsO4)·2H2O2157209101153
Sphalerite  (*)SphaleriteZnS21572091021482
Stibnite  (*)StibniteSb2S32157209103418
Stützite  (*)NoneAg5-xTe3 (x = 0.24-0.36)21572091092
Sylvanite  (*)MeloniteAgAuTe4215721530337
Tetrahedrite-(Zn)  (*)TetrahedriteCu6(Cu4Zn2)Sb4S132157209105317
Weissite  (*)NoneCu2-xTe21572091031


2 Ages assigned to this locality:

Excel IDMax Age (Ma)Min Age (Ma)Age as listed in referenceDating MethodAge InterpretPrioritized?Sample SourceSample NumRun NumAge from other LocalityDated MineralMinerals explicitely stated as having this ageAge applies to these ElementsMinDat Locality IDDated Locality (Max Age)Location as listed in referenceReferenceReference DOIReference IDAge Notes
PR89_129-1215721532155±2207Pb/206Pb highzircon20 YesZirconGoldAu192427Ashanti Gold Belt, Western Region, GhanaAshanti belt, GhanaOberthür et al. (1998)10.1016/S0301-9268(97)00075-2PR89_129Fig. 4
PR89_129-2210520912098±7Pb/Pb rutileGH789 YesRutileGoldAu192427Ashanti Gold Belt, Western Region, GhanaAshanti belt, GhanaOberthür et al. (1998)10.1016/S0301-9268(97)00075-3PR89_130Fig. 8

All locality data graciously provided by mindat.org

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