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:
Gila Bend Mts, Maricopa Co., Arizona, USA

Oldest recorded age at locality: 35
Youngest recorded age at locality: 0

mindat Locality ID: 188549
mindat URL: http://www.mindat.org/loc-188549.html

Tectonic Settings:

Total number of sublocalities beneath "Gila Bend Mts, Maricopa Co., Arizona, USA": 3
Total number of bottom-level sublocalities: 1

Number of Child Localities: 1
Child Localities:
Webb District

Latitude: 33°12'5"N
Longitude: 112°52'4"W
Decimal Degree (lat, lon): 33.201388888889,-112.86777777778

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	Chalcopyrite	Clay	Humboldtine	Malachite	Mica	None	Not in a structural group	Oxalate

Bornite ()*	Chalcocite ()*	Chalcopyrite ()*	Chrysocolla ()*	Cuprite ()*
Glushinskite ()*	Lansfordite ()*	Malachite ()*	Monohydrocalcite ()*	Muscovite ()*
Nesquehonite ()*	Weddellite ()*

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 K Mg O S Si

Elements from minerals reported directly at this locality: C Ca H Mg O

Structural Groups for minerals in this locality:
Allophane Chalcopyrite Clay Humboldtine Malachite Mica None Not in a structural group Oxalate

12 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
Bornite ()*	None	Cu₅FeS₄	28.07	26.75	1	140976	5516
Chalcocite ()*	None	Cu₂S	28.07	26.75	1	140976	5707
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	28.07	26.75	1	140976	27198
Chrysocolla ()*	Allophane	(Cu_2-xAl_x)H_2-xSi₂O₅(OH)₄·nH₂O	28.07	26.75	1	140976	3531
Cuprite ()*	Not in a structural group	Cu₂O	28.07	26.75	1	140976	2970
Glushinskite ()*	Humboldtine Oxalate	Mg(C₂O₄)·2H₂O	35	0	0		5
Lansfordite ()*	None	Mg(CO₃)·5H₂O	35	0	0		17
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	28.07	26.75	1	140976	12537
Monohydrocalcite ()*	None	Ca(CO₃)·H₂O	35	0	0		55
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	28.07	26.75	1	140976	17380
Nesquehonite ()*	None	Mg(CO₃)·3H₂O	35	0	0		80
Weddellite ()*	Oxalate	Ca(C₂O₄)·2H₂O	35	0	0		32

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Michelle_597	After the death of a saguaro, a series of minerals crystallize in the rotting flesh.
Michelle_828	The high-Mg andesites erupted near the end of Miocene extension in the Gila Bend region.

4 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Prioritized?	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 DOI	Reference ID	Age Notes
Michelle_597	35	0	35-0		Age that cactus lineage diverged from its closest relatives	high			Calcite, Glushinskite, Lansfordite, Monohydrocalcite, Nesquehonite, Vaterite, Weddellite	188549	Gila Bend Mts, Maricopa Co., Arizona, USA	Saguaro (Carnegiea gigantea)	Arakaki et al. (2011)	10.1073/pnas.1100628108	PNAS108_8379	Age that cactus lineage diverged from its closest relatives
Michelle_828	23	5.3	Miocene		Age of extension and volcanism					188549	Gila Bend Mts, Maricopa Co., Arizona, USA	Gila Bend Mountains	Lopez and Cameron (1997)	10.1130/0016-7606(1997)109%3C0900:HMAFTG%3E2.3.CO;2	GSAB109_900	Age of extension and volcanism in the Gila Bend Region.
Giersdorf_00000389	28.07	26.75	27.41±0.66	K-Ar			UAKA-73-26			62480	Buckeye Mine (Buckeye Copper Mine), Spring Mountain, Webb District, Gila Bend Mts, Maricopa Co., Arizona, USA	Gila Bend Mts.	Shafiqullah et al. (1980)		AGSD12_201
Giersdorf_00000384	30	28.8	29.4±0.6	K-Ar	Age correlated with an aeolian cross-bedded sandstone		UAKA-73-25	Yes		107502	Gillespie Dam Area, Maricopa Co., Arizona, USA	Spring Mountains Quad.	Shafiqullah et al. (1980)		AGSD12_201

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...