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:
Akyempim, Ashanti Gold Belt, Western Region, Ghana

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

mindat Locality ID: 257109
mindat URL: http://www.mindat.org/loc-257109.html

Tectonic Settings:

Total number of sublocalities beneath "Akyempim, Ashanti Gold Belt, Western Region, Ghana": 2
Total number of bottom-level sublocalities: 2

Number of Child Localities: 2
Child Localities:
Akyiempim Wassa Gold Mine
Golden Star (Wassa) Akyempim Gold Mine SAK 1 Pit

Latitude: 5°29'17"N
Longitude: 1°43'5"W
Decimal Degree (lat, lon): 5.4880555555556,-1.7180555555556

A	This mineral is Anthropogenic.
G	This mineral is directly dated.
B	This mineral is reported as having this age.
Y	This mineral is using an age reported as an element mineralization period.
O	This mineral is using an age calculated from all data at the locality.
R	The age displayed for this mineral originates from a different, non-child locality.
P	The 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.

Chalcopyrite	Clay	Copper	Mica	None	Pyrite	Quartz

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: Al Au C Ca Cu Fe H K Mg O S Si

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Chalcopyrite Clay Copper Mica None Pyrite Quartz

8 IMA Minerals at location:

Ankerite ()*	Chalcopyrite ()*	Dolomite ()*	Gold ()*	Graphite ()*
Muscovite ()*	Pyrite ()*	Quartz ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Ankerite ()*	None	Ca(Fe²⁺,Mg)(CO₃)₂	2157	2091	1	63859	3092
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	2157	2091	1	63859	27198
Dolomite ()*	None	CaMg(CO₃)₂	2157	2091	1	63859	9895
Gold ()*	Copper	Au	2157	2153	2	63858,63859	30554
Graphite ()*	None	C	2157	2091	1	63859	2812
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	2157	2091	1	63859	17380
Pyrite ()*	Pyrite	FeS₂	2157	2091	1	63859	39462
Quartz ()*	Quartz	SiO₂	2157	2091	1	63859	61156

2 Ages assigned to this locality:

	Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Prioritized?	Sample Source	Sample Num	Run Num	Age from other Locality	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID	Age Notes
	PR89_129-1	2157	2153	2155±2	207Pb/206Pb		high	zircon	20		Yes	Zircon	Gold	Au	192427	Ashanti Gold Belt, Western Region, Ghana	Ashanti belt, Ghana	Oberthür et al. (1998)	10.1016/S0301-9268(97)00075-2	PR89_129	Fig. 4
	PR89_129-2	2105	2091	2098±7	Pb/Pb			rutile	GH789		Yes	Rutile	Gold	Au	192427	Ashanti Gold Belt, Western Region, Ghana	Ashanti belt, Ghana	Oberthür et al. (1998)	10.1016/S0301-9268(97)00075-3	PR89_130	Fig. 8

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...