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:
Senator Morgan Mine Group, Twin Buttes, 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: 36271
mindat URL: http://www.mindat.org/loc-36271.html

Tectonic Settings:

Total number of sublocalities beneath "Senator Morgan Mine Group, Twin Buttes, Pima District (Olive District; Mineral Hill District; Twin Buttes District), Sierrita Mts, Pima Co., Arizona, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 31°53'10"N
Longitude: 111°4'38"W
Decimal Degree (lat, lon): 31.886111111111,-111.07722222222

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	Chalcopyrite	Clinozoisite	Epidote	None	Pyrite	Pyroxene	Scheelite

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 Ca Cu Fe H Mg Mo O S Si W

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

Structural Groups for minerals in this locality:
Amphibole Chalcopyrite Clinozoisite Epidote None Pyrite Pyroxene Scheelite

8 IMA Minerals at location:

Chalcopyrite ()*	Diopside ()*	Epidote ()*	Hedenbergite ()*	Powellite ()*
Pyrite ()*	Scheelite ()*	Tremolite ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	58	58	27198
Diopside ()*	Pyroxene	CaMgSi₂O₆	58	58	4135
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	58	58	8173
Hedenbergite ()*	Pyroxene	CaFe²⁺Si₂O₆	67	58	741
Powellite ()*	Scheelite	Ca(MoO₄)	58	58	494
Pyrite ()*	Pyrite	FeS₂	58	58	39462
Scheelite ()*	Scheelite	Ca(WO₄)	58	58	4894
Tremolite ()*	Amphibole	Ca₂(Mg_5.0-4.5Fe²⁺_0.0-0.5)Si₈O₂₂(OH)₂	67	58	2562

6 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	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
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
PorphCu-00012	58	58	58				Yes	Actinolite, Bornite, Brochantite, Chalcopyrite, Chrysocolla, Copper, Diopside, Epidote, Ferrimolybdite, Fluorite, Galena, Magnetite, Molybdenite, Montmorillonite, Powellite, Pyrite, Pyrolusite, Pyrrhotite, Scheelite, Siderite, Sphalerite, Wollastonite	Cu	3376	Twin Buttes Mine (Twin Buttes Open Pit Mine), Twin Buttes, Pima District (Olive District; Mineral Hill District; Twin Buttes District), Sierrita Mts, Pima Co., Arizona, USA	Twin Buttes	Singer et al. (2008)		USGSOFR2008_1155

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...