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:
Kovaya Hills, Comobabi Mts, Tohono O'odom (Papago) Indian Reservation, Pima Co., Arizona, USA

Oldest recorded age at locality: 102
Youngest recorded age at locality: 98

mindat Locality ID: 188652
mindat URL: http://www.mindat.org/loc-188652.html

Tectonic Settings:

Total number of sublocalities beneath "Kovaya Hills, Comobabi Mts, Tohono O'odom (Papago) Indian Reservation, Pima Co., Arizona, USA": 2
Total number of bottom-level sublocalities: 2

Number of Child Localities: 2
Child Localities:
Kovaya Hills Area
North Of Sells

Latitude: 32°3'35"N
Longitude: 111°58'3"W
Decimal Degree (lat, lon): 32.059722222222,-111.9675

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.

Axinite	Clay	Clinozoisite	Epidote	Mica	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 B Ca H K Mn O Si

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Axinite Clay Clinozoisite Epidote Mica None

4 IMA Minerals at location:

Axinite-(Mn) ()*	Clinozoisite ()*	Muscovite ()*	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
Axinite-(Mn) ()*	Axinite	Ca₄Mn²⁺₂Al₄[B₂Si₈O₃₀](OH)₂	102	98	1	144899	88
Clinozoisite ()*	Clinozoisite Epidote	Ca₂Al₃[Si₂O₇][SiO₄]O(OH)	102	98	1	144899	1025
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	102	98	1	144900	17380
Piemontite ()*	Epidote	Ca₂(Al₂Mn³⁺)[Si₂O₇][SiO₄]O(OH)	102	98	1	144899	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_00000348	102	98	100±2	K-Ar				UAKA-73-49		Yes				35515	Cababi District (Comobabi District), Comobabi Mts, Tohono O'odom (Papago) Indian Reservation, Pima Co., Arizona, USA	Papago Indian Reservation	Shafiqullah et al. (1980)		AGSD12_201	Cretaceous sedimentary rocks are in disconformable contact with this intrusion

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...