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 Group [old], Pima District (Olive District; Mineral Hill District; Twin Buttes District), Sierrita Mts, Pima Co., Arizona, USA

Oldest recorded age at locality: 67
Youngest recorded age at locality: 58

mindat Locality ID: 36246
mindat URL: http://www.mindat.org/loc-36246.html

Tectonic Settings:

Total number of sublocalities beneath "Esperanza Mine Group [old], Pima District (Olive District; Mineral Hill District; Twin Buttes District), Sierrita Mts, Pima Co., Arizona, USA": 6
Total number of bottom-level sublocalities: 6

Number of Child Localities: 6
Child Localities:
Costillo Mine Group (Costillo Copper Group)
Crown King & Tiger Mine Groups (Crown King And Tiger Mines)
Hughes Mine Group (Hughes Copper Group)
Magnet-Copper Mine Group (Magnet Copper Groups)
Snyder Mine (Sneider Group; Snyder Group; Snyder Copper Group)
Wheeler-Perry Mine Group (Wheeler-Perry Copper Group)

Latitude: 31°53'29"N
Longitude: 111°11'44"W
Decimal Degree (lat, lon): 31.891388888889,-111.19555555556

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	Clay	Kaolinite	Mica	None	Pyrite	Rocksalt	Sphalerite

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 Fe H K O Pb S Si Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Calcite Chalcopyrite Clay Kaolinite Mica None Pyrite Rocksalt Sphalerite

7 IMA Minerals at location:

Calcite ()*	Chalcopyrite ()*	Galena ()*	Kaolinite ()*	Muscovite ()*
Pyrite ()*	Sphalerite ()*

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
Calcite ()*	Calcite	Ca(CO₃)	67	58	1	144617	27770
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	67	58	1	144617	27198
Galena ()*	Rocksalt	PbS	67	58	1	144617	24243
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	67	58	1	144617	5591
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	67	58	1	144617	17380
Pyrite ()*	Pyrite	FeS₂	67	58	1	144617	39462
Sphalerite ()*	Sphalerite	ZnS	67	58	1	144617	21482

5 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Sample Source	Sample Num	Age from other Locality	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID
EG94_211-00050	67	67	67	Pb-Pb	whole rock?	KD-GR2-1	Yes	22945	Sierrita Mine (Duval-Sierrita Mine; Duval Esperanza Mine; Sierrita Open Pit Mine), Batamote Hills, Pima District (Olive District; Mineral Hill District; Twin Buttes District), Sierrita Mts, Pima Co., Arizona, USA	Sierrita	Bouse et al. (1999)	10.2113/gsecongeo.94.2.211	EG94_211
EG94_211-00051	67	67	67	Pb-Pb	whole rock?	D-MR2-2	Yes	22945	Sierrita Mine (Duval-Sierrita Mine; Duval Esperanza Mine; Sierrita Open Pit Mine), Batamote Hills, Pima District (Olive District; Mineral Hill District; Twin Buttes District), Sierrita Mts, Pima Co., Arizona, USA	Sierrita	Bouse et al. (1999)	10.2113/gsecongeo.94.2.211	EG94_211
EG94_211-00052	63	63	63	Pb-Pb	whole rock?	RS-MR-5	Yes	22945	Sierrita Mine (Duval-Sierrita Mine; Duval Esperanza Mine; Sierrita Open Pit Mine), Batamote Hills, Pima District (Olive District; Mineral Hill District; Twin Buttes District), Sierrita Mts, Pima Co., Arizona, USA	Sierrita	Bouse et al. (1999)	10.2113/gsecongeo.94.2.211	EG94_211
EG94_211-00053	58	58	58	Pb-Pb	whole rock?	TWB-Pa	Yes	22945	Sierrita Mine (Duval-Sierrita Mine; Duval Esperanza Mine; Sierrita Open Pit Mine), Batamote Hills, Pima District (Olive District; Mineral Hill District; Twin Buttes District), Sierrita Mts, Pima Co., Arizona, USA	Sierrita	Bouse et al. (1999)	10.2113/gsecongeo.94.2.211	EG94_211
EG94_211-00054	58	58	58	Pb-Pb	whole rock?	QL-85-1	Yes	22945	Sierrita Mine (Duval-Sierrita Mine; Duval Esperanza Mine; Sierrita Open Pit Mine), Batamote Hills, Pima District (Olive District; Mineral Hill District; Twin Buttes District), Sierrita Mts, Pima Co., Arizona, USA	Sierrita	Bouse et al. (1999)	10.2113/gsecongeo.94.2.211	EG94_211

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...