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:
Avra, Amole District, Tucson Mts, Pima Co., Arizona, USA

Oldest recorded age at locality: 925
Youngest recorded age at locality: 57.2

mindat Locality ID: 282121
mindat URL: http://www.mindat.org/loc-282121.html

Tectonic Settings:

Total number of sublocalities beneath "Avra, Amole District, Tucson Mts, Pima Co., Arizona, USA": 3
Total number of bottom-level sublocalities: 3

Number of Child Localities: 3
Child Localities:
Busterville Mine
Gould Mine
Thunderbird Mine

Latitude: 32°17'32"N
Longitude: 111°9'24"W
Decimal Degree (lat, lon): 32.292222222222,-111.15666666667

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.

Bournonite	Calcite	Chalcopyrite	Clinozoisite	Epidote	Malachite	Nickeline	None	Pyrite	Quartz
Sphalerite	Tetrahedrite

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 O Pb S Sb Si Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Bournonite Calcite Chalcopyrite Clinozoisite Epidote Malachite Nickeline None Pyrite Quartz
Sphalerite Tetrahedrite

11 IMA Minerals at location:

Bournonite ()*	Calcite ()*	Chalcopyrite ()*	Epidote ()*	Malachite ()*
Pyrite ()*	Pyrrhotite ()*	Quartz ()*	Smithsonite ()*	Sphalerite ()*
Tetrahedrite-(Zn) ()*

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
Bournonite ()*	Bournonite	CuPbSbS₃	925	57.2	1	144991	1089
Calcite ()*	Calcite	Ca(CO₃)	925	57.2	1	144991	27770
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	925	57.2	2	144991,144992	27198
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	160	150	1	144992	8173
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	925	57.2	1	144991	12537
Pyrite ()*	Pyrite	FeS₂	160	150	1	144992	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈	925	57.2	1	144991	9056
Quartz ()*	Quartz	SiO₂	160	150	1	144992	61156
Smithsonite ()*	Calcite	Zn(CO₃)	160	150	1	144993	2473
Sphalerite ()*	Sphalerite	ZnS	925	57.2	1	144991	21482
Tetrahedrite-(Zn) ()*	Tetrahedrite	Cu₆(Cu₄Zn₂)Sb₄S₁₃	925	57.2	1	144991	5317

3 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Sample Num	Age from other Locality	Minerals explicitely stated as having this age	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference ID
Giersdorf_00000342	160	150	155±5	K-Ar	UAKA-67-200	Yes		31283	Amole District, Tucson Mts, Pima Co., Arizona, USA	Tucson Mts.	Shafiqullah et al. (1980)	AGSD12_201
Giersdorf_00000335	925	865	895±30	K-Ar	UAKA-74-20		Muscovite	45005	Busterville Mine, Avra, Amole District, Tucson Mts, Pima Co., Arizona, USA	Busterville	Shafiqullah et al. (1980)	AGSD12_201
Giersdorf_00000364	60	57.2	58.6±1.4	K-Ar	UAKA-73-86			45005	Busterville Mine, Avra, Amole District, Tucson Mts, Pima Co., Arizona, USA	Busterville	Shafiqullah et al. (1980)	AGSD12_201

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...