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:
Tarkwa, Ashanti Gold Belt, Western Region, Ghana

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

mindat Locality ID: 40710
mindat URL: http://www.mindat.org/loc-40710.html

Tectonic Settings:

Total number of sublocalities beneath "Tarkwa, Ashanti Gold Belt, Western Region, Ghana": 4
Total number of bottom-level sublocalities: 3

Number of Child Localities: 3
Child Localities:
Abosso-Damang Au Deposit
Arkontansi Prospect
Tarkwa Mine

Latitude: 5°24'3"N
Longitude: 1°56'29"W
Decimal Degree (lat, lon): 5.4008333333333,-1.9413888888889

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.

Calcite	Chalcopyrite	Chloritoid	Clay	Clinozoisite	Copper	Corundum	Diamond	Epidote	Marcasite
Mica	Nickeline	None	Pyrite	Quartz	Rutile	Spinel	Staurolite	Zircon

Bornite ()*	Calcite ()*	Chalcopyrite ()*	Chloritoid ()*	Chromite ()*
Diamond ()*	Epidote ()*	Gold ()*	Hematite ()*	Ilmenite ()*
Magnetite ()*	Marcasite ()*	Muscovite ()*	Pyrite ()*	Pyrrhotite ()*
Quartz ()*	Rutile ()*	Staurolite ()*	Zincochromite ()*	Zircon ()*

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 Cr Cu Fe H K O S Si Ti Zn Zr

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Calcite Chalcopyrite Chloritoid Clay Clinozoisite Copper Corundum Diamond Epidote Marcasite
Mica Nickeline None Pyrite Quartz Rutile Spinel Staurolite Zircon

20 IMA Minerals at location:

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
Bornite ()*	None	Cu₅FeS₄	2157	2091	1	63890	5516
Calcite ()*	Calcite	Ca(CO₃)	2157	2091	1	63888	27770
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	2157	2091	2	63888,63890	27198
Chloritoid ()*	Chloritoid	Fe²⁺Al₂O(SiO₄)(OH)₂	2157	2091	1	63890	376
Chromite ()*	Spinel	Fe²⁺Cr₂O₄	2157	2091	1	63890	3902
Diamond ()*	Diamond	C	2157	2091	1	63890	697
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	2157	2091	1	63890	8173
Gold ()*	Copper	Au	2157	2153	3	63887,63888,63890	30554
Hematite ()*	Corundum	Fe₂O₃	2157	2091	2	63889,63890	14640
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃	2157	2091	1	63890	5433
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	2157	2091	2	63888,63890	14899
Marcasite ()*	Marcasite	FeS₂	2157	2091	1	63890	5674
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	2157	2091	1	63890	17380
Pyrite ()*	Pyrite	FeS₂	2157	2091	3	63887,63888,63890	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈	2157	2091	2	63888,63890	9056
Quartz ()*	Quartz	SiO₂	2157	2091	3	63887,63888,63890	61156
Rutile ()*	Rutile	TiO₂	2105	2091	1	63890	5614
Staurolite ()*	Staurolite	Fe²⁺₂Al₉Si₄O₂₃(OH)	2157	2091	1	63890	978
Zincochromite ()*	Spinel	ZnCr₂O₄	2157	2091	1	63890	11
Zircon ()*	Zircon	Zr(SiO₄)	2157	2153	1	63890	5251

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...