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:
Picacho District, Chocolate Mts, Imperial Co., California, USA

Oldest recorded age at locality: 35
Youngest recorded age at locality: 21

mindat Locality ID: 185306
mindat URL: http://www.mindat.org/loc-185306.html

Tectonic Settings:

Total number of sublocalities beneath "Picacho District, Chocolate Mts, Imperial Co., California, USA": 50
Total number of bottom-level sublocalities: 47

Number of Child Localities: 4
Child Localities:
Blue Jacket Mine
Pebble Mountain
Picacho
Picacho Peak

Latitude: 32°58'41"N
Longitude: 114°38'20"W
Decimal Degree (lat, lon): 32.978055555556,-114.63888888889
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: Ag Al Au B C Ca Cu Fe H K Mg O Pb S Sb Si 

Elements from minerals reported directly at this locality: Mg O Si 

Structural Groups for minerals in this locality: 
AragoniteCalciteChalcopyriteClayCopperCorundumDiasporeDumortieriteFeldsparMalachite
MicaNoneNot in a structural groupOlivinePyriteQuartzRocksaltSpinelTetrahedrite

20 IMA Minerals at location:
Azurite  (*)Calcite  (*)Cerussite  (*)Chalcopyrite  (*)Dumortierite  (*)
Forsterite  (*)Galena  (*)Goethite  (*)Gold  (*)Hematite  (*)
Magnetite  (*)Malachite  (*)Microcline  (*)Muscovite  (*)Orthoclase  (*)
Pyrite  (*)Quartz  (*)Silver  (*)Tenorite  (*)Tetrahedrite-(Zn)  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Azurite  (*)Not in a structural groupCu3(CO3)2(OH)227.423.911566725509
Calcite  (*)CalciteCa(CO3)27.423.9115669327770
Cerussite  (*)AragonitePb(CO3)3522.911566554979
Chalcopyrite  (*)ChalcopyriteCuFeS227.423.92156672,15668127198
Dumortierite  (*)DumortieriteAlAl6BSi3O1827.423.91156698231
Forsterite  (*)OlivineMg2(SiO4)352101188
Galena  (*)RocksaltPbS3522.92156655,15668124243
Goethite  (*)DiasporeFeO(OH)27.423.911566937437
Gold  (*)CopperAu27.4219156652,156654,156657,156663,156666,156667,156675,156688,15669330554
Hematite  (*)CorundumFe2O327.423.92156657,15669314640
Magnetite  (*)SpinelFe2+Fe3+2O427.423.9115669314899
Malachite  (*)MalachiteCu2(CO3)(OH)227.423.9115667212537
Microcline  (*)FeldsparK(AlSi3O8)27.423.911566934924
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)227.423.93156657,156672,15669317380
Orthoclase  (*)FeldsparK(AlSi3O8)27.423.911566722349
Pyrite  (*)PyriteFeS227.423.9115669339462
Quartz  (*)QuartzSiO227.423.93156657,156693,15669461156
Silver  (*)CopperAg27.423.911566935186
Tenorite  (*)NoneCuO27.423.911566721101
Tetrahedrite-(Zn)  (*)TetrahedriteCu6(Cu4Zn2)Sb4S1327.423.911566505317


15 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
NAVDAT-16044272124±3   16044    296644Pebble Mountain, Picacho District, Chocolate Mts, Imperial Co., California, USA NAVDAT NAVDAT 
NAVDAT-16046272124±3   16046    77038Goshen Placer Mine, Pebble Mountain, Picacho District, Chocolate Mts, Imperial Co., California, USA NAVDAT NAVDAT 
NAVDAT-1600824.122.923.5±0.6   16008    77093Mayflower Mine, Pebble Mountain, Picacho District, Chocolate Mts, Imperial Co., California, USA NAVDAT NAVDAT 
NAVDAT-53543528.631.8±3.2  plagioclase5354    77093Mayflower Mine, Pebble Mountain, Picacho District, Chocolate Mts, Imperial Co., California, USA NAVDAT NAVDAT 
NAVDAT-1601928.425.226.8±1.6   16019    77099Million Dollar Gold Mine, Pebble Mountain, Picacho District, Chocolate Mts, Imperial Co., California, USA NAVDAT NAVDAT 
Giersdorf_0000039027.424.225.8±1.6K-ArAge suspected to be older than the Kinter formation found in the Chocolate Mountains. UAKA-68-09    216264Picacho, Picacho District, Chocolate Mts, Imperial Co., California, USAPicacho Peak Quad.Shafiqullah et al. (1980) AGSD12_201 
Giersdorf_0000039126.923.925.4±1.5K-Ar  UAKA-67-01    216264Picacho, Picacho District, Chocolate Mts, Imperial Co., California, USAPicacho Peak Quad.Shafiqullah et al. (1980) AGSD12_201 
NAVDAT-1599724.122.923.5±0.6   15997    77039Gulch Placer Mine (California Picacho; Picacho Basin Placers), Picacho, Picacho District, Chocolate Mts, Imperial Co., California, USA NAVDAT NAVDAT 
NAVDAT-1599924.122.923.5±0.6   15999    77039Gulch Placer Mine (California Picacho; Picacho Basin Placers), Picacho, Picacho District, Chocolate Mts, Imperial Co., California, USA NAVDAT NAVDAT 
NAVDAT-16030272124±3   16030    296626Picacho Peak, Picacho District, Chocolate Mts, Imperial Co., California, USA NAVDAT NAVDAT 
NAVDAT-1604122.421.221.8±0.6   16041    296626Picacho Peak, Picacho District, Chocolate Mts, Imperial Co., California, USA NAVDAT NAVDAT 
NAVDAT-16048272124±3   16048    296626Picacho Peak, Picacho District, Chocolate Mts, Imperial Co., California, USA NAVDAT NAVDAT 
NAVDAT-16049272124±3   16049    296626Picacho Peak, Picacho District, Chocolate Mts, Imperial Co., California, USA NAVDAT NAVDAT 
NAVDAT-1600924.122.923.5±0.6   16009    76974California Picacho Mine, Picacho Peak, Picacho District, Chocolate Mts, Imperial Co., California, USA NAVDAT NAVDAT 
NAVDAT-16045272124±3   16045    77144Roadside Mine (Picacho Peak Project; Christie), Picacho Peak, Picacho District, Chocolate Mts, Imperial Co., California, USA NAVDAT NAVDAT 

SampleSource LocalityReference URL

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