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:
Yuma District, Yuma Co., Arizona, USA

Oldest recorded age at locality: 70
Youngest recorded age at locality: 68.52

mindat Locality ID: 24753
mindat URL: http://www.mindat.org/loc-24753.html

Tectonic Settings:

Total number of sublocalities beneath "Yuma District, Yuma Co., Arizona, USA": 3
Total number of bottom-level sublocalities: 1

Number of Child Localities: 1
Child Localities:
Yuma

Latitude: 0°0'0"N
Longitude: 0°0'0"E
Decimal Degree (lat, lon): 0,0

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.

None	Pyrite

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: Cl Fe H N S

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
None Pyrite

2 IMA Minerals at location:

Pyrite ()*	Salammoniac ()*

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
Pyrite ()*	Pyrite	FeS₂	68.52	68.52	2	149592,149593	39462
Salammoniac ()*	None	(NH₄)Cl	68.52	68.52	1	149591	105

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Jen_0000066	Along Arizona Highway 95 about ~ mile east of the 16th Street railroad overpass

2 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
	Jen_0000066	70	70	70	Rb-Sr	age of intrusion	low	biotite	A-45						33852	Jude Mine Group (Silverfields Mine), Yuma, Yuma District, Yuma Co., Arizona, USA	Yuma, Arizona	Wasserburg and Lanphere (1965)	10.1130/0016-7606(1965)76[735:ADITPO]2.0.CO;2	GSAB76_735	intrusion of younger granite into older metamorphic terrain
	USGS-Rb-Sr-01679	68.52	68.52	68.52	Rb-Sr	age of intrusion		biotite							33852	Jude Mine Group (Silverfields Mine), Yuma, Yuma District, Yuma Co., Arizona, USA		USGS-Rb-Sr		USGS-Rb-Sr

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...