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:
Chad

Oldest recorded age at locality: 782
Youngest recorded age at locality: 570

mindat Locality ID: 28900
mindat URL: http://www.mindat.org/loc-28900.html

Tectonic Settings:

Total number of sublocalities beneath "Chad": 36
Total number of bottom-level sublocalities: 28

Number of Child Localities: 18
Child Localities:
Batha Region
Borkou-Ennedi-Tibesti Region
Chari-Baguirmi Region
Guéra Region
Hadjer-Lamis Region
Kanem Region (Khanem)
Lac Region
Logone Occidental Region
Logone Oriental Region
Mandoul Region
Mayo-Kebbi Est Region
Mayo-Kebbi Ouest Region
Moyen-Chari Region
Ouaddaï Region
Salamat Region
Tandjilé Region
Ville De N'Djamena Region
Wadi Fira Region

Latitude: 14°49'28"N
Longitude: 14°8'47"E
Decimal Degree (lat, lon): 14.824444444444,14.146388888889

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.

Amphibole	Arsenopyrite	Beryl	Calcite	Chalcopyrite	Clay	Clinozoisite	Copper	Corundum	Epidote
Fluorite	Malachite	Mica	Nickeline	None	Pyrite	Quartz	Rutile	Sphalerite	Spinel
Talc	Tetradymite

Actinolite ()*	Ankerite ()*	Arsenopyrite ()*	Beryl ()*	Calcite ()*
Cassiterite ()*	Chalcopyrite ()*	Epidote ()*	Gaylussite ()*	Gold ()*
Hessite ()*	Ilmenite ()*	Kanemite ()*	Kawazulite ()*	Magadiite ()*
Malachite ()*	Muscovite ()*	Pyrite ()*	Pyrrhotite ()*	Quartz ()*
Rutile ()*	Siegenite ()*	Sphalerite ()*	Talc ()*	Thénardite ()*
Tremolite ()*	Trona ()*	Uraninite ()*

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 Be Bi C Ca Co Cu Fe H K Mg Na Ni O S Se Si Sn Te Ti U Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Amphibole Arsenopyrite Beryl Calcite Chalcopyrite Clay Clinozoisite Copper Corundum Epidote
Fluorite Malachite Mica Nickeline None Pyrite Quartz Rutile Sphalerite Spinel
Talc Tetradymite

28 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	782	570	1	35501	3419
Ankerite ()*	None	Ca(Fe²⁺,Mg)(CO₃)₂	782	570	1	35503	3092
Arsenopyrite ()*	Arsenopyrite	FeAsS	782	570	4	35500,35503,35504,35505	9052
Beryl ()*	Beryl	Be₃Al₂Si₆O₁₈			1	35483	4286
Calcite ()*	Calcite	Ca(CO₃)	782	570	1	35503	27770
Cassiterite ()*	Rutile	SnO₂			1	35483	5171
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	782	570	4	35500,35503,35504,35505	27198
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	782	570	1	35501	8173
Gaylussite ()*	None	Na₂Ca(CO₃)₂·5H₂O			1	35488	57
Gold ()*	Copper	Au	782	570	9	35499,35500,35501,35503,35504,35505,35506,35507,35508	30554
Hessite ()*	None	Ag₂Te	782	700	1	35504	804
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃			1	35482	5433
Kanemite ()*	None	NaSi₂O₄(OH)·3H₂O			1	35488	4
Kawazulite ()*	Tetradymite	Bi₂Te₂Se	782	700	1	35504	32
Magadiite ()*	None	Na₂Si₁₄O₂₈(OH)₂·8H₂O			1	35487	11
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂			1	35500	12537
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	782	570	1	35503	17380
Pyrite ()*	Pyrite	FeS₂	782	570	4	35500,35503,35504,35505	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈	782	700	1	35504	9056
Quartz ()*	Quartz	SiO₂	782	570	5	35483,35500,35503,35504,35505	61156
Rutile ()*	Rutile	TiO₂			1	35482	5614
Siegenite ()*	Spinel	CoNi₂S₄	782	700	1	35504	249
Sphalerite ()*	Sphalerite	ZnS	782	700	1	35504	21482
Talc ()*	Clay Talc	Mg₃Si₄O₁₀(OH)₂	782	570	2	35503,35505	3337
Thénardite ()*	None	Na₂(SO₄)			1	35490	299
Tremolite ()*	Amphibole	Ca₂(Mg_5.0-4.5Fe²⁺_0.0-0.5)Si₈O₂₂(OH)₂	782	570	1	35501	2562
Trona ()*	None	Na₃(HCO₃)(CO₃)·2H₂O			1	35490	129
Uraninite ()*	Fluorite	UO₂			1	35481	2718

7 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Sample Source	Dated Mineral	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID
Deep-Dive-other-00003	782	700	777±5 to 700					249258	Bamdi, Pala, Mayo-Kebbi Ouest Region, Chad	Bamdi	Tchameni et al. (2013)	10.1016/j.jafrearsci.2013.03.002	JAES84_36
Deep-Dive-other-00001	782	700	777±5 to 700					232614	Ganboke Deposit (Gamboké), Pala, Mayo-Kebbi Ouest Region, Chad	Gamboké	Tchameni et al. (2013)	10.1016/j.jafrearsci.2013.03.002	JAES84_36
Thesis2006_Doumnang_0001	728	570	649 ± 79	U-Pb	host rock	zircon	Zircon	232614	Ganboke Deposit (Gamboké), Pala, Mayo-Kebbi Ouest Region, Chad	Pala Region, Chad	Doumnang (2006)		Thesis2006_Doumnang
Deep-Dive-other-00005	782	700	777±5 to 700					249260	Goueyegoudoum, Pala, Mayo-Kebbi Ouest Region, Chad	Goueigoudoum	Tchameni et al. (2013)	10.1016/j.jafrearsci.2013.03.002	JAES84_36
DeepDive-Co-0021	777	700	777-700					249260	Goueyegoudoum, Pala, Mayo-Kebbi Ouest Region, Chad	Goueigoudoum	Tchameni et al. (2013)	10.1016/j.jafrearsci.2013.03.002	JAES84_36
Deep-Dive-other-00004	782	700	777±5 to 700					249259	Massonebaré, Pala, Mayo-Kebbi Ouest Region, Chad	Massonebaré	Tchameni et al. (2013)	10.1016/j.jafrearsci.2013.03.002	JAES84_36
Deep-Dive-other-00002	782	700	777±5 to 700					249257	Mbidou, Pala, Mayo-Kebbi Ouest Region, Chad	Mbidou	Tchameni et al. (2013)	10.1016/j.jafrearsci.2013.03.002	JAES84_36

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...