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:
Black Rock Group, Cochise District, Little Dragoon Mts, Cochise Co., Arizona, USA

Oldest recorded age at locality: 1420.01
Youngest recorded age at locality: 0

mindat Locality ID: 274972
mindat URL: http://www.mindat.org/loc-274972.html

Tectonic Settings:

Total number of sublocalities beneath "Black Rock Group, Cochise District, Little Dragoon Mts, Cochise Co., Arizona, USA": 2
Total number of bottom-level sublocalities: 1

Number of Child Localities: 1
Child Localities:
Tungsten King Mine (Tungsten King Group Of Claims; Tungsten Queen Group Of Claims)

Latitude: 32°4'27"N
Longitude: 110°8'21"W
Decimal Degree (lat, lon): 32.074166666667,-110.13916666667
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 Be Bi C Ca Cu Fe H K Mg Mn Mo O Pb S Si Te W 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AluniteBerylCalciteChalcopyriteClayColumbiteCorundumGypsumKaoliniteMica
MolybdeniteNonePyriteQuartzRocksaltScheeliteSpinelTetradymite

18 IMA Minerals at location:
Beryl  (*)Calcite  (*)Chalcopyrite  (*)Dolomite  (*)Galena  (*)
Gypsum  (*)Hematite  (*)Hübnerite  (*)Jarosite  (*)Kaolinite  (*)
Magnetite  (*)Molybdenite  (*)Muscovite  (*)Pyrite  (*)Quartz  (*)
Scheelite  (*)Tetradymite  (*)Wulfenite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Beryl  (*)BerylBe3Al2Si6O181420.011419.9911370624286
Calcite  (*)CalciteCa(CO3)1420.011419.99113706227770
Chalcopyrite  (*)ChalcopyriteCuFeS21420.011419.99113706227198
Dolomite  (*)NoneCaMg(CO3)21420.011419.9911370629895
Galena  (*)RocksaltPbS1420.011419.99113706224243
Gypsum  (*)GypsumCa(SO4)·2H2O1420.011419.9911370626890
Hematite  (*)CorundumFe2O31420.011419.99113706214640
Hübnerite  (*)ColumbiteMn2+(WO4)1420.011419.991137062469
Jarosite  (*)AluniteKFe3+3(SO4)2(OH)61420.011419.9911370622228
Kaolinite  (*)Clay KaoliniteAl2Si2O5(OH)41420.011419.9911370625591
Magnetite  (*)SpinelFe2+Fe3+2O41420.011419.99113706214899
Molybdenite  (*)MolybdeniteMoS21420.011419.9911370625800
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)21420.011419.99113706217380
Pyrite  (*)PyriteFeS21420.011419.99113706239462
Quartz  (*)QuartzSiO21420.011419.99113706261156
Scheelite  (*)ScheeliteCa(WO4)002137062,1370634894
Tetradymite  (*)TetradymiteBi2Te2S1420.011419.991137062510
Wulfenite  (*)ScheelitePbMoO41420.011419.9911370621655


Locality Notes from all Ages at Locality:
Age IDLocality Notes
Jen_0000113granite
Michelle_554Near-surface occurrence. Recently forming oxalate associated with cave deposits, in Cochise County, Arizona.


2 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
Michelle_55400Recent Age of whewellite mineralizationhigh   YesWhewellite 15570Cochise Co., Arizona, USACochise CountyHofmann and Bernasconi (1998)10.1016/S0009-2541(98)00043-6CG149_127Described as "recent cave deposits."
Jen_00001131420.011419.991420±0.01U-Pb zircon   Zircon  32616Tungsten King Mine (Tungsten King Group Of Claims; Tungsten Queen Group Of Claims), Black Rock Group, Cochise District, Little Dragoon Mts, Cochise Co., Arizona, USATungsten King Granite, ArizonaAnderson (1983)10.1130/MEM161-p133GSAM161_133anorogenic

SampleSource LocalityReference URL

All locality data graciously provided by mindat.org

All age data...

Other copyright data...