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:
Bonanza Mine (Bonanza Vein; SRK Mine; Mitchell Mine; Kerr Mine; Calvillo Mine), Coyote District, Coyote Mts, Pima Co., Arizona, USA

Oldest recorded age at locality: 51.9
Youngest recorded age at locality: 49.7

mindat Locality ID: 35636
mindat URL: http://www.mindat.org/loc-35636.html

Tectonic Settings:

Total number of sublocalities beneath "Bonanza Mine (Bonanza Vein; SRK Mine; Mitchell Mine; Kerr Mine; Calvillo Mine), Coyote District, Coyote Mts, Pima Co., Arizona, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 32°0'9"N
Longitude: 111°30'39"W
Decimal Degree (lat, lon): 32.0025,-111.51083333333

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	Baryte	Chalcopyrite	Clinozoisite	Covellite	Epidote	Malachite	Molybdenite	None	Pyrite
Pyroxene	Scheelite	Sphalerite	Spinel

Baryte ()*	Bornite ()*	Chalcocite ()*	Chalcopyrite ()*	Chrysocolla ()*
Covellite ()*	Diopside ()*	Epidote ()*	Magnetite ()*	Malachite ()*
Molybdenite ()*	Pyrite ()*	Scheelite ()*	Sphalerite ()*

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 Ba C Ca Cu Fe H Mg Mo O S Si W Zn

Elements from minerals reported directly at this locality: Al Ba C Ca Cu Fe H Mg Mo O S Si W Zn

Structural Groups for minerals in this locality:
Allophane Baryte Chalcopyrite Clinozoisite Covellite Epidote Malachite Molybdenite None Pyrite
Pyroxene Scheelite Sphalerite Spinel

14 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Baryte ()*	Baryte	Ba(SO₄)	51.9	49.7	11547
Bornite ()*	None	Cu₅FeS₄	51.9	49.7	5516
Chalcocite ()*	None	Cu₂S	51.9	49.7	5707
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	51.9	49.7	27198
Chrysocolla ()*	Allophane	(Cu_2-xAl_x)H_2-xSi₂O₅(OH)₄·nH₂O	51.9	49.7	3531
Covellite ()*	Covellite	CuS	51.9	49.7	4165
Diopside ()*	Pyroxene	CaMgSi₂O₆	51.9	49.7	4135
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	51.9	49.7	8173
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	51.9	49.7	14899
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	51.9	49.7	12537
Molybdenite ()*	Molybdenite	MoS₂	51.9	49.7	5800
Pyrite ()*	Pyrite	FeS₂	51.9	49.7	39462
Scheelite ()*	Scheelite	Ca(WO₄)	51.9	49.7	4894
Sphalerite ()*	Sphalerite	ZnS	51.9	49.7	21482

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_00000374	51.9	49.7	50.8±1.1	K-Ar				UAKA-77-60		Yes				35638	Roadside Mine (St. Francis Mine; Coyote Claim), Pan Tak, Coyote District, Coyote Mts, Tohono O'odom (Papago) Indian Reservation, Pima Co., Arizona, USA	Roadside Formation	Shafiqullah et al. (1980)		AGSD12_201	Sample is partially propylitized

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...