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:
Lakeshore Mine (Casa Grande Mine; Trans Arizona Res. Inc. Mine; Treasure State Mine; Cyprus Casa Grande Mine; Tohono Mine; Cyprus Tohono Mine), North Komelik Area, Casa Grande District, Slate Mts, Tohono O'odham Indian Reservation, Pinal Co., Arizona, USA

Oldest recorded age at locality: 66
Youngest recorded age at locality: 66

mindat Locality ID: 51058
mindat URL: http://www.mindat.org/loc-51058.html

Tectonic Settings:

Total number of sublocalities beneath "Lakeshore Mine (Casa Grande Mine; Trans Arizona Res. Inc. Mine; Treasure State Mine; Cyprus Casa Grande Mine; Tohono Mine; Cyprus Tohono Mine), North Komelik Area, Casa Grande District, Slate Mts, Tohono O'odham Indian Reservation, Pinal Co., Arizona, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 32°31'23"N
Longitude: 111°54'7"W
Decimal Degree (lat, lon): 32.523055555556,-111.90194444444

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	Amphibole	Atacamite	Brochantite	Calcite	Chalcopyrite	Clay	Copper	Corundum	Covellite
Diaspore	Gypsum	Humite	Kaolinite	Mica	Molybdenite	None	Not in a structural group	Olivine	Pyrite
Pyroxene	Rocksalt	Rutile	Sphalerite	Spinel

Anhydrite ()*	Atacamite ()*	Bornite ()*	Brochantite ()*	Calcite ()*
Chalcocite ()*	Chalcopyrite ()*	Chondrodite ()*	Chrysocolla ()*	Copper ()*
Covellite ()*	Cuprite ()*	Diopside ()*	Dioptase ()*	Forsterite ()*
Galena ()*	Goethite ()*	Gypsum ()*	Hematite ()*	Kaolinite ()*
Magnetite ()*	Molybdenite ()*	Muscovite ()*	Phlogopite ()*	Pyrite ()*
Rutile ()*	Sphalerite ()*	Tenorite ()*	Tremolite ()*

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 Cl Cu F Fe H K Mg Mo O Pb S Si Ti Zn

Elements from minerals reported directly at this locality: Al C Ca Cl Cu F Fe H K Mg Mo O Pb S Si Ti Zn

Structural Groups for minerals in this locality:
Allophane Amphibole Atacamite Brochantite Calcite Chalcopyrite Clay Copper Corundum Covellite
Diaspore Gypsum Humite Kaolinite Mica Molybdenite None Not in a structural group Olivine Pyrite
Pyroxene Rocksalt Rutile Sphalerite Spinel

29 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Anhydrite ()*	Not in a structural group	Ca(SO₄)	66	66	1588
Atacamite ()*	Atacamite	Cu₂Cl(OH)₃	66	66	544
Bornite ()*	None	Cu₅FeS₄	66	66	5516
Brochantite ()*	Brochantite	Cu₄(SO₄)(OH)₆	66	66	1633
Calcite ()*	Calcite	Ca(CO₃)	66	66	27770
Chalcocite ()*	None	Cu₂S	66	66	5707
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	66	66	27198
Chondrodite ()*	Humite	Mg₅(SiO₄)₂F₂	66	66	285
Chrysocolla ()*	Allophane	(Cu_2-xAl_x)H_2-xSi₂O₅(OH)₄·nH₂O	66	66	3531
Copper ()*	Copper	Cu	66	66	3846
Covellite ()*	Covellite	CuS	66	66	4165
Cuprite ()*	Not in a structural group	Cu₂O	66	66	2970
Diopside ()*	Pyroxene	CaMgSi₂O₆	66	66	4135
Dioptase ()*	None	CuSiO₃·H₂O	66	66	164
Forsterite ()*	Olivine	Mg₂(SiO₄)	66	66	1188
Galena ()*	Rocksalt	PbS	66	66	24243
Goethite ()*	Diaspore	FeO(OH)	66	66	7437
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	66	66	6890
Hematite ()*	Corundum	Fe₂O₃	66	66	14640
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	66	66	5591
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	66	66	14899
Molybdenite ()*	Molybdenite	MoS₂	66	66	5800
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	66	66	17380
Phlogopite ()*	Mica Clay	KMg₃(AlSi₃O₁₀)(OH)₂	66	66	2273
Pyrite ()*	Pyrite	FeS₂	66	66	39462
Rutile ()*	Rutile	TiO₂	66	66	5614
Sphalerite ()*	Sphalerite	ZnS	66	66	21482
Tenorite ()*	None	CuO	66	66	1101
Tremolite ()*	Amphibole	Ca₂(Mg_5.0-4.5Fe²⁺_0.0-0.5)Si₈O₂₂(OH)₂	66	66	2562

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-00111	66	66	66									Brochantite, Chalcocite, Chalcopyrite, Covellite, Cuprite, Diopside, Magnetite, Pyrite, Tenorite, Tremolite	Cu	51058	Lakeshore Mine (Casa Grande Mine; Trans Arizona Res. Inc. Mine; Treasure State Mine; Cyprus Casa Grande Mine; Tohono Mine; Cyprus Tohono Mine), North Komelik Area, Casa Grande District, Slate Mts, Tohono O'odham Indian Reservation, Pinal Co., Arizona, USA	Lakeshore	Singer et al. (2008)		USGSOFR2008_1155

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...