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:
Juan Santa Cruz Picnic Grounds, Tucson Mts, Pima Co., Arizona, USA

Oldest recorded age at locality: 160
Youngest recorded age at locality: 150

mindat Locality ID: 50749
mindat URL: http://www.mindat.org/loc-50749.html

Tectonic Settings:

Total number of sublocalities beneath "Juan Santa Cruz Picnic Grounds, Tucson Mts, Pima Co., Arizona, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 32°14'13"N
Longitude: 111°9'54"W
Decimal Degree (lat, lon): 32.236944444444,-111.165

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.

Braunite	Epidote	None

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 H Mn O Si

Elements from minerals reported directly at this locality: Al Ca H Mn O Si

Structural Groups for minerals in this locality:
Braunite Epidote None

2 IMA Minerals at location:

Braunite ()*	Piemontite ()*

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
Braunite ()*	Braunite	Mn²⁺Mn³⁺₆O₈(SiO₄)	160	150	0		483
Piemontite ()*	Epidote	Ca₂(Al₂Mn³⁺)[Si₂O₇][SiO₄]O(OH)	160	150	0		260

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
	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

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...