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:
La Mejicana Mine, Nevados De Famatina Cu-Au Deposit (La Estrechura), Chilecito, Chilecito Department, La Rioja Province, Argentina

Oldest recorded age at locality: 5
Youngest recorded age at locality: 3.8

mindat Locality ID: 237501
mindat URL: http://www.mindat.org/loc-237501.html

Tectonic Settings:

Total number of sublocalities beneath "La Mejicana Mine, Nevados De Famatina Cu-Au Deposit (La Estrechura), Chilecito, Chilecito Department, La Rioja Province, Argentina": 0
Total number of bottom-level sublocalities: 0

Latitude: 0°0'0"N
Longitude: 0°0'0"E
Decimal Degree (lat, lon): 0,0

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	Copper	Enargite	Germanite	Melonite	None	Polybasite	Pyrite	Quartz	Sphalerite
Stannite	Tetrahedrite	Wurtzite

Chalcopyrite ()*	Colusite ()*	Enargite ()*	Famatinite ()*	Goldfieldite ()*
Hessite ()*	Luzonite ()*	Polybasite ()*	Pyrite ()*	Quartz ()*
Silver ()*	Stützite ()*	Sylvanite ()*	Tennantite-(Fe) ()*	Tetrahedrite-(Zn) ()*

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 As Au Cu Fe O S Sb Si Te V

Elements from minerals reported directly at this locality: Ag As Au Cu Fe O S Sb Si Te V Zn

Structural Groups for minerals in this locality:
Chalcopyrite Copper Enargite Germanite Melonite None Polybasite Pyrite Quartz Sphalerite
Stannite Tetrahedrite Wurtzite

15 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	5	3.8	27198
Colusite ()*	Sphalerite Germanite	Cu₁₃VAs₃S₁₆	5	3.8	110
Enargite ()*	Enargite Wurtzite	Cu₃AsS₄	5	3.8	910
Famatinite ()*	Stannite Sphalerite	Cu₃SbS₄	5	3.8	163
Goldfieldite ()*	Tetrahedrite	(Cu₄ ₂)Cu₆Te₄S₁₃	5	3.8	72
Hessite ()*	None	Ag₂Te	5	3.8	804
Luzonite ()*	Stannite Sphalerite	Cu₃AsS₄	5	3.8	198
Polybasite ()*	Polybasite	[Ag₉CuS₄][(Ag,Cu)₆(Sb,As)₂S₇]	5	3.8	716
Pyrite ()*	Pyrite	FeS₂	5	3.8	39462
Quartz ()*	Quartz	SiO₂	5	3.8	61156
Silver ()*	Copper	Ag	5	3.8	5186
Stützite ()*	None	Ag_5-xTe₃ (x = 0.24-0.36)	5	3.8	92
Sylvanite ()*	Melonite	AgAuTe₄	5	3.8	337
Tennantite-(Fe) ()*	Tetrahedrite	Cu₆(Cu₄Fe₂)As₄S₁₃	5	3.8	1803
Tetrahedrite-(Zn) ()*	Tetrahedrite	Cu₆(Cu₄Zn₂)Sb₄S₁₃	5	3.8	5317

1 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
	PorphCu-00065	5	3.8	5–3.8							Yes		Alunite, Anhydrite, Bornite, Chalcocite, Chalcopyrite, Enargite, Famatinite, Gold, Goldfieldite, Hematite, Idaite, Luzonite, Magnetite, Molybdenite, Pyrite, Pyrophyllite, Pyrrhotite, Sphalerite, Svanbergite, Sylvanite, Zunyite	Cu	23362	Nevados De Famatina Cu-Au Deposit (La Estrechura), Chilecito, Chilecito Department, La Rioja Province, Argentina	Nevados de Famatina	Singer et al. (2008)		USGSOFR2008_1155

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...