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:
Wellton Hills-Copper Mts, Yuma Co., Arizona, USA

Oldest recorded age at locality: 53.8
Youngest recorded age at locality: 51.2

mindat Locality ID: 33637
mindat URL: http://www.mindat.org/loc-33637.html

Tectonic Settings:

Total number of sublocalities beneath "Wellton Hills-Copper Mts, Yuma Co., Arizona, USA": 44
Total number of bottom-level sublocalities: 28

Number of Child Localities: 1
Child Localities:
La Posa District (Wellton District; Wellton Hills District)

Latitude: 32°30'54"N
Longitude: 114°1'59"W
Decimal Degree (lat, lon): 32.515,-114.03305555556

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	Alunite	Baryte	Brochantite	Calcite	Clay	Copper	Corundum	Covellite	Gypsum
Malachite	Mica	None	Pyrite	Quartz	Scheelite	Smectite-vermiculite

Baryte ()*	Brochantite ()*	Calcite ()*	Chalcocite ()*	Chrysocolla ()*
Covellite ()*	Gold ()*	Gypsum ()*	Hematite ()*	Jarosite ()*
Malachite ()*	Montmorillonite ()*	Muscovite ()*	Pyrite ()*	Quartz ()*
Wulfenite ()*

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 Au Ba C Ca Cu Fe H K Mg Mo Na O Pb S Si

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Allophane Alunite Baryte Brochantite Calcite Clay Copper Corundum Covellite Gypsum
Malachite Mica None Pyrite Quartz Scheelite Smectite-vermiculite

16 IMA Minerals at location:

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
Baryte ()*	Baryte	Ba(SO₄)			1	149542	11547
Brochantite ()*	Brochantite	Cu₄(SO₄)(OH)₆			1	149549	1633
Calcite ()*	Calcite	Ca(CO₃)			9	149540,149545,149549,149551,149560,149561,149562,149569,149581	27770
Chalcocite ()*	None	Cu₂S			1	149567	5707
Chrysocolla ()*	Allophane	(Cu_2-xAl_x)H_2-xSi₂O₅(OH)₄·nH₂O	53.8	51.2	12	149540,149544,149549,149553,149556,149560,149561,149562,149564,149565,149566,149567	3531
Covellite ()*	Covellite	CuS			1	149567	4165
Gold ()*	Copper	Au			5	149540,149564,149565,149566,149578	30554
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O			4	149549,149564,149565,149566	6890
Hematite ()*	Corundum	Fe₂O₃			6	149544,149545,149560,149561,149562,149566	14640
Jarosite ()*	Alunite	KFe³⁺₃(SO₄)₂(OH)₆			3	149564,149565,149566	2228
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	53.8	51.2	6	149540,149556,149560,149561,149562,149567	12537
Montmorillonite ()*	Clay Smectite-vermiculite	(Na,Ca)_0.3(Al,Mg)₂Si₄O₁₀(OH)₂·nH₂O			1	149573	1508
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂			16	149540,149545,149547,149549,149551,149553,149560,149561,149562,149564,149565,149566,149567,149569,149574,149578	17380
Pyrite ()*	Pyrite	FeS₂			2	149549,149553	39462
Quartz ()*	Quartz	SiO₂			3	149540,149569,149581	61156
Wulfenite ()*	Scheelite	PbMoO₄			1	149569	1655

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_00000372	53.8	51.2	52.5±1.3	K-Ar				UAKA-75-99						51858	McMillan Prospect, Barry M. Goldwater Air Force Range, Cabeza Prieta Mts, La Posa District (Wellton District; Wellton Hills District), Wellton Hills-Copper Mts, Yuma Co., Arizona, USA	Cabeza Prieta Quad.	Shafiqullah et al. (1980)		AGSD12_201

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...