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:
Cercle De Nioro Du Sahel, Kayes Region, Mali

Oldest recorded age at locality: 560
Youngest recorded age at locality: 145

mindat Locality ID: 36414
mindat URL: http://www.mindat.org/loc-36414.html

Tectonic Settings:

Total number of sublocalities beneath "Cercle De Nioro Du Sahel, Kayes Region, Mali": 13
Total number of bottom-level sublocalities: 8

Number of Child Localities: 5
Child Localities:
Commune Diaye Coura
Commune Sandaré
Matia
Opal Occurrence
Yelimané

Latitude: 14°56'19"N
Longitude: 10°7'40"W
Decimal Degree (lat, lon): 14.938611111111,-10.127777777778

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.

Allophane	Amorphous	Amphibole	Chlorite	Clay	Clinozoisite	Epidote	Garnet	Malachite	None
Prehnite	Quartz	Spinel	Titanite	Vesuvianite

Actinolite ()*	Andradite ()*	Chalcocite ()*	Chamosite ()*	Chrysocolla ()*
Epidote ()*	Grossular ()*	Magnetite ()*	Malachite ()*	Opal ()*
Prehnite ()*	Quartz ()*	Titanite ()*	Vesuvianite ()*

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 C Ca Cu F Fe H Mg Na O S Si Ti

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Allophane Amorphous Amphibole Chlorite Clay Clinozoisite Epidote Garnet Malachite None
Prehnite Quartz Spinel Titanite Vesuvianite

14 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
Actinolite ()*	Amphibole	Ca₂(Mg_4.5-2.5Fe²⁺_0.5-2.5)Si₈O₂₂(OH)₂	201	145	1	80228	3419
Andradite ()*	Garnet	Ca₃Fe³⁺₂(SiO₄)₃	201	145	1	80228	1534
Chalcocite ()*	None	Cu₂S	560	560	1	80223	5707
Chamosite ()*	Chlorite Clay	(Fe²⁺,Mg,Al,Fe³⁺)₆(Si,Al)₄O₁₀(OH,O)₈	201	145	1	80228	577
Chrysocolla ()*	Allophane	(Cu_2-xAl_x)H_2-xSi₂O₅(OH)₄·nH₂O	560	560	1	80223	3531
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	201	145	2	80228,80234	8173
Grossular ()*	Garnet	Ca₃Al₂(SiO₄)₃	201	145	1	80228	1544
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	201	145	1	80228	14899
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	560	560	1	80223	12537
Opal ()*	Amorphous	SiO₂·nH₂O			1	80232	2994
Prehnite ()*	Prehnite	Ca₂Al(Si₃Al)O₁₀(OH)₂	201	145	3	80228,80231,80234	1898
Quartz ()*	Quartz	SiO₂	201	145	1	80228	61156
Titanite ()*	Titanite	CaTi(SiO₄)O	201	145	1	80228	4899
Vesuvianite ()*	Vesuvianite	(Ca,Na)₁₉(Al,Mg,Fe)₁₃(SiO₄)₁₀(Si₂O₇)₄(OH,F,O)₁₀	201	145	1	80228	1395

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Giersdorf_00000270	Diabase intrusions into limestone in Mali, forming the Kaarta Massif

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
	sedcu-00515	560	560	L.Cambrian										Cu	228182	Niami, Commune Diaye Coura, Cercle De Nioro Du Sahel, Kayes Region, Mali	Niami	Cox et al. (2003)		USGSOFR03_107
	Giersdorf_00000270	201	145	Jurassic									Epidote, Prehnite, Vesuvianite		27645	Sandaré, Arrondissement Sandaré, Commune Sandaré, Cercle De Nioro Du Sahel, Kayes Region, Mali	Sandaré	Johnson et al. (1995)		GG31_152	Age of diabase intrusions into limestone

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...