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

AThis mineral is Anthropogenic.
GThis mineral is directly dated.
BThis mineral is reported as having this age.
YThis mineral is using an age reported as an element mineralization period.
OThis mineral is using an age calculated from all data at the locality.
RThe age displayed for this mineral originates from a different, non-child locality.
PThe 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.

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: 
AllophaneBaryteChalcopyriteClinozoisiteCovelliteEpidoteMalachiteMolybdeniteNonePyrite
PyroxeneScheeliteSphaleriteSpinel

14 IMA Minerals at location:
Baryte  (*)Bornite  (*)Chalcocite  (*)Chalcopyrite  (*)Chrysocolla  (*)
Covellite  (*)Diopside  (*)Epidote  (*)Magnetite  (*)Malachite  (*)
Molybdenite  (*)Pyrite  (*)Scheelite  (*)Sphalerite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Baryte  (*)BaryteBa(SO4)51.949.7011547
Bornite  (*)NoneCu5FeS451.949.705516
Chalcocite  (*)NoneCu2S51.949.705707
Chalcopyrite  (*)ChalcopyriteCuFeS251.949.7027198
Chrysocolla  (*)Allophane(Cu2-xAlx)H2-xSi2O5(OH)4·nH2O51.949.703531
Covellite  (*)CovelliteCuS51.949.704165
Diopside  (*)PyroxeneCaMgSi2O651.949.704135
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)51.949.708173
Magnetite  (*)SpinelFe2+Fe3+2O451.949.7014899
Malachite  (*)MalachiteCu2(CO3)(OH)251.949.7012537
Molybdenite  (*)MolybdeniteMoS251.949.705800
Pyrite  (*)PyriteFeS251.949.7039462
Scheelite  (*)ScheeliteCa(WO4)51.949.704894
Sphalerite  (*)SphaleriteZnS51.949.7021482



1 Ages assigned to this locality:

Excel IDMax Age (Ma)Min Age (Ma)Age as listed in referenceDating MethodAge InterpretPrioritized?Sample SourceSample NumRun NumAge from other LocalityDated MineralMinerals explicitely stated as having this ageAge applies to these ElementsMinDat Locality IDDated Locality (Max Age)Location as listed in referenceReferenceReference DOIReference IDAge Notes
Giersdorf_0000037451.949.750.8±1.1K-Ar  UAKA-77-60 Yes  35638Roadside Mine (St. Francis Mine; Coyote Claim), Pan Tak, Coyote District, Coyote Mts, Tohono O'odom (Papago) Indian Reservation, Pima Co., Arizona, USARoadside FormationShafiqullah et al. (1980) AGSD12_201Sample is partially propylitized


SampleSource LocalityReference URL


All locality data graciously provided by mindat.org

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