Mineral Evolution Database
Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.
Mineral locality data provided by mindat.org

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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:
Douglas Co., Colorado, USA

Oldest recorded age at locality: 1743.92
Youngest recorded age at locality: 1075

mindat Locality ID: 24133
mindat URL: http://www.mindat.org/loc-24133.html

Tectonic Settings:

Total number of sublocalities beneath "Douglas Co., Colorado, USA": 179
Total number of bottom-level sublocalities: 172

Number of Child Localities: 49
Child Localities:
Castle Rock Area
Cherry Creek
Churchill
Clay Pit (MRDS - 10142419)
Dawson Arkose
Deckers Area
Devils Head Pegmatite District
Diamond Clay Mine
Gravel Pit (MRDS - 10118180)
Gravel Pit (MRDS - 10118547)
Gravel Pit (MRDS - 10142688)
Gravel Pit (MRDS - 10166357)
Gravel Pit (MRDS - 10190105)
Gravel Pit (MRDS - 10214459)
Gravel Pit (MRDS - 10214471)
Gravel Pit (MRDS - 10263695)
Gravel Pit (MRDS - 10264334)
Gravel Pit (MRDS - 10287916)
Gravel Pit (MRDS - 10288287)
Gravel Pit (MRDS - 10305042)
Helmer Brothers Occurrence
Higginson Pit
Jenny Lode Occurrence
Johnson; Scott; & Brickyard Occurrence
Kassler Area
Larkspur
Larkspur (2)
Littleton Quadrangle
Nighthawk Area
Oregon Nos.1; 2 & 3 And Little Patsy
Parker
Perry Park
Pikes Peak Granite
Pine Creek
Pine Creek Pegmatite Area
Plum Creek
Quarry (MRDS - 10190488)
Quarry (MRDS - 10190545)
Rampart Range
Sand Pit (MRDS - 10118228)
Sand Pit (MRDS - 10288534)
Trout Creek Area
Twin Cedar Area
Unknown Feldspar - Mica Occurrence (MRDS - 10017228)
Unknown Stone - Crushed/Broken Occurrence (MRDS - 10017225)
Unnamed Pegmatite
Ute
Ware Occurrence
West Creek

Latitude: 39°21'31"N
Longitude: 104°57'39"W
Decimal Degree (lat, lon): 39.358611111111,-104.96083333333

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 As Au Ba Be C Ca Ce Cu F Fe H K Li Mg Mn Mo Na Nb O P S Si Sn Ta Th Ti U V Y Zr 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AdeliteAllaniteAllophaneAmorphousAmphiboleBaryteBerylCalciteChalcopyriteClay
ClinozoisiteColumbiteCopperCoronaditeCorundumEpidoteFeldsparFluoriteGadoliniteGypsum
MalachiteMicaMolybdeniteNoneNot in a structural groupOlivinePyritePyroxeneQuartzRutile
ScheeliteSmectite-vermiculiteTopazZircon

43 IMA Minerals at location:
Albite  (*)Allanite-(Ce)  (*)Baryte  (*)Bertrandite  (*)Beryl  (*)
Calcite  (*)Carnotite  (*)Cassiterite  (*)Chalcopyrite  (*)Chrysoberyl  (*)
Chrysocolla  (*)Conichalcite  (*)Epidote  (*)Euxenite-(Y)  (*)Fayalite  (*)
Fergusonite-(Y)  (*)Fluorite  (*)Gadolinite-(Y)  (*)Gold  (*)Gypsum  (*)
Hastingsite  (*)Hedenbergite  (*)Hematite  (*)Hollandite  (*)Malachite  (*)
Manganite  (*)Microcline  (*)Molybdenite  (*)Montmorillonite  (*)Opal  (*)
Orthoclase  (*)Polylithionite  (*)Pyrite  (*)Pyrolusite  (*)Quartz  (*)
Samarskite-(Y)  (*)Sanidine  (*)Silver  (*)Tenorite  (*)Thorite  (*)
Topaz  (*)Xenotime-(Y)  (*)Zircon  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Albite  (*)FeldsparNa(AlSi3O8)107910758187752,187766,187771,187776,187777,187796,187856,1878588803
Allanite-(Ce)  (*)Allanite EpidoteCaCe(Al2Fe2+)[Si2O7][SiO4]O(OH)107910755187781,187785,187788,187791,187796706
Baryte  (*)BaryteBa(SO4)2187721,18772211547
Bertrandite  (*)Not in a structural groupBe4Si2O7(OH)2107910751187766606
Beryl  (*)BerylBe3Al2Si6O18107910752187759,1877734286
Calcite  (*)CalciteCa(CO3)118785627770
Carnotite  (*)NoneK2(UO2)2(VO4)2·3H2O11878261184
Cassiterite  (*)RutileSnO2107910753187766,187777,1878585171
Chalcopyrite  (*)ChalcopyriteCuFeS22187843,18784427198
Chrysoberyl  (*)OlivineBeAl2O41187870321
Chrysocolla  (*)Allophane(Cu2-xAlx)H2-xSi2O5(OH)4·nH2O2187843,1878443531
Conichalcite  (*)AdeliteCaCu(AsO4)(OH)2187843,187844363
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)11878568173
Euxenite-(Y)  (*)ColumbiteY(NbTi)O6107910753187766,187771,187824414
Fayalite  (*)OlivineFe2+2(SiO4)107910753187764,187766,187862371
Fergusonite-(Y)  (*)ScheeliteYNbO4107910751187766196
Fluorite  (*)FluoriteCaF21079107515187764,187766,187769,187771,187772,187773,187778,187781,187785,187786,187790,187792,187796,187858,1878629617
Gadolinite-(Y)  (*)GadoliniteY2Fe2+Be2O2(SiO4)2107910751187766163
Gold  (*)CopperAu10187697,187720,187725,187726,187744,187748,187749,187750,187751,18775830554
Gypsum  (*)GypsumCa(SO4)·2H2O11878556890
Hastingsite  (*)AmphiboleNaCa2(Fe2+4Fe3+)(Si6Al2)O22(OH)22187764,187862209
Hedenbergite  (*)PyroxeneCaFe2+Si2O62187764,187862741
Hematite  (*)CorundumFe2O310791075118776614640
Hollandite  (*)CoronaditeBa(Mn4+6Mn3+2)O16107910751187766243
Malachite  (*)MalachiteCu2(CO3)(OH)22187843,18784412537
Manganite  (*)RutileMn3+O(OH)107910751187766770
Microcline  (*)FeldsparK(AlSi3O8)1079107525187752,187766,187767,187769,187771,187772,187773,187776,187777,187781,187782,187783,187784,187785,187786,187787,187788,187790,187791,187792,187796,187852,187856,187858,1878674924
Molybdenite  (*)MolybdeniteMoS211877655800
Montmorillonite  (*)Clay Smectite-vermiculite(Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O11878561508
Opal  (*)AmorphousSiO2·nH2O11876962994
Orthoclase  (*)FeldsparK(AlSi3O8)11878562349
Polylithionite  (*)MicaKLi2AlSi4O10F210791075118776689
Pyrite  (*)PyriteFeS2118785639462
Pyrolusite  (*)RutileMnO21079107511877663106
Quartz  (*)QuartzSiO21079107518187759,187766,187767,187777,187778,187779,187780,187781,187782,187784,187787,187790,187792,187848,187856,187858,187859,18787061156
Samarskite-(Y)  (*)ColumbiteYFe3+Nb2O8107910752187766,187795353
Sanidine  (*)FeldsparK(AlSi3O8)1187752598
Silver  (*)CopperAg5187720,187748,187749,187750,1877515186
Tenorite  (*)NoneCuO2187843,1878441101
Thorite  (*)ZirconTh(SiO4)107910754187781,187783,187785,1877881006
Topaz  (*)TopazAl2SiO4F2107910756187766,187776,187777,187784,187787,1877961476
Xenotime-(Y)  (*)ZirconY(PO4)107910751187783939
Zircon  (*)ZirconZr(SiO4)1079107511877665251



4 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
USGS-Rb-Sr-043111743.921603.921673.92±70Rb-Srage of intrusionwhole rock     112638Saddle Rock Ranch, Kassler Area, Douglas Co., Colorado, USA USGS-Rb-Sr USGS-Rb-Sr 
USGS-Rb-Sr-043121743.921603.921673.92±70Rb-Srage of intrusionwhole rock     112638Saddle Rock Ranch, Kassler Area, Douglas Co., Colorado, USA USGS-Rb-Sr USGS-Rb-Sr 
USGS-Rb-Sr-043131743.921603.921673.92±70Rb-Srage of intrusionwhole rock     112638Saddle Rock Ranch, Kassler Area, Douglas Co., Colorado, USA USGS-Rb-Sr USGS-Rb-Sr 
Bradley_2012_132107910751077±2Ar/Ar    Yes  3668Pikes Peak, El Paso Co., Colorado, USAPike's PeakMcCauley and Bradley (2014)10.3749/canmin.52.2.183CM52_183 


SampleSource LocalityReference URL
R050193Devils Head Mine (Devils Head Pegmatite), Devils Head Pegmatite District, Douglas Co., Colorado, USAhttps://rruff.info/R050193


All locality data graciously provided by mindat.org

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