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:
Esperanza Mine, Sierra Gorda District, Tocopilla Province, Antofagasta, Chile

Oldest recorded age at locality: 41.8
Youngest recorded age at locality: 41.3

mindat Locality ID: 205858
mindat URL: http://www.mindat.org/loc-205858.html

Tectonic Settings:

Total number of sublocalities beneath "Esperanza Mine, Sierra Gorda District, Tocopilla Province, Antofagasta, Chile": 0
Total number of bottom-level sublocalities: 0

Latitude: 22°58'"S
Longitude: 69°3'30"W
Decimal Degree (lat, lon): -22.966666666667,-69.058333333333

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	Alunite	Atacamite	Brochantite	Chalcopyrite	Clay	Clinozoisite	Copper	Epidote	Gypsum
Mica	Molybdenite	None	Not in a structural group	Pyrite	Pyroxene	Spinel

Alunite ()*	Anhydrite ()*	Atacamite ()*	Bornite ()*	Brochantite ()*
Chalcocite ()*	Chalcopyrite ()*	Chrysocolla ()*	Diopside ()*	Epidote ()*
Gold ()*	Gypsum ()*	Hedenbergite ()*	Jarosite ()*	Magnetite ()*
Molybdenite ()*	Muscovite ()*	Pyrite ()*

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 Ca Cl Cu Fe H K Mg Mo O S Si

Elements from minerals reported directly at this locality: Al Au Ca Cl Cu Fe H K Mg Mo O S Si

Structural Groups for minerals in this locality:
Allophane Alunite Atacamite Brochantite Chalcopyrite Clay Clinozoisite Copper Epidote Gypsum
Mica Molybdenite None Not in a structural group Pyrite Pyroxene Spinel

18 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Alunite ()*	None	KAl₃(SO₄)₂(OH)₆	41.8	41.3	966
Anhydrite ()*	Not in a structural group	Ca(SO₄)	41.8	41.3	1588
Atacamite ()*	Atacamite	Cu₂Cl(OH)₃	41.8	41.3	544
Bornite ()*	None	Cu₅FeS₄	41.8	41.3	5516
Brochantite ()*	Brochantite	Cu₄(SO₄)(OH)₆	41.8	41.3	1633
Chalcocite ()*	None	Cu₂S	41.8	41.3	5707
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	41.8	41.3	27198
Chrysocolla ()*	Allophane	(Cu_2-xAl_x)H_2-xSi₂O₅(OH)₄·nH₂O	41.8	41.3	3531
Diopside ()*	Pyroxene	CaMgSi₂O₆	41.8	41.3	4135
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	41.8	41.3	8173
Gold ()*	Copper	Au	41.8	41.3	30554
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	41.8	41.3	6890
Hedenbergite ()*	Pyroxene	CaFe²⁺Si₂O₆	41.8	41.3	741
Jarosite ()*	Alunite	KFe³⁺₃(SO₄)₂(OH)₆	41.8	41.3	2228
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	41.8	41.3	14899
Molybdenite ()*	Molybdenite	MoS₂	41.8	41.3	5800
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	41.8	41.3	17380
Pyrite ()*	Pyrite	FeS₂	41.8	41.3	39462

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-00295	41.8	41.3	41.3±0.3; 41,8±0.13									Alunite, Atacamite, Chalcopyrite, Chrysocolla, Jarosite, Pyrite	Cu	205858	Esperanza Mine, Sierra Gorda District, Tocopilla Province, Antofagasta, Chile	Esperanza	Singer et al. (2008)		USGSOFR2008_1155

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...