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:
Ventura Co., California, USA

Oldest recorded age at locality: 25
Youngest recorded age at locality: 21

mindat Locality ID: 29852
mindat URL: http://www.mindat.org/loc-29852.html

Tectonic Settings:

Total number of sublocalities beneath "Ventura Co., California, USA": 198
Total number of bottom-level sublocalities: 146

Number of Child Localities: 19
Child Localities:
Bardsdale
Camarillo
Cuyama Valley
Fillmore
Los Sauces Creek
Muscle Shoals
Oak View
San Emigdio Mts
San Nicolas Island
Santa Monica Mts
Santa Paula
Simi Valley
Thousand Oaks
Topatopa Mts
Unnamed Quarry (MRDS - 10166031)
Unspecified Offshore Drill Hole (Pacific Ocean)
Unspecified U Occurrence
Ventura
Westlake Village

Latitude: 34°15'0"N
Longitude: 119°'54"W
Decimal Degree (lat, lon): 34.25,-119.015

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 As Au B Ba C Ca Cd Cu F Fe H K Mg Mn Mo N Na Ni O P Pb S Si Sr Ti U V Zn 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AluniteAmorphousAnalcimeApatiteApophylliteAragoniteArsenopyriteAutuniteCalciteChalcopyrite
ClayCopperCorundumFluoriteGypsumGyroliteIronMalachiteMarcasiteMica
MilleriteMolybdeniteMordeniteNatroliteNickelineNoneNot in a structural groupPentlanditePicromeritePseudobrookite
PyriteQuartzRocksaltScheeliteSmectite-vermiculiteSphaleriteSulphurTalcWurtzite

53 IMA Minerals at location:
Analcime  (*)Arsenopyrite  (*)Aurichalcite  (*)Autunite  (*)Azurite  (*)
Becquerelite  (*)Boussingaultite  (*)Calcite  (*)Carnotite  (*)Celadonite  (*)
Cerussite  (*)Chalcopyrite  (*)Colemanite  (*)Cuprite  (*)Epistilbite  (*)
Fluorapatite  (*)Galena  (*)Gold  (*)Greenockite  (*)Gypsum  (*)
Hematite  (*)Howlite  (*)Hydroboracite  (*)Hydroxyapophyllite-(K)  (*)Iron  (*)
Jarosite  (*)Malachite  (*)Marcasite  (*)Mesolite  (*)Millerite  (*)
Molybdenite  (*)Montmorillonite  (*)Mordenite  (*)Muscovite  (*)Natrolite  (*)
Opal  (*)Pentlandite  (*)Pseudobrookite  (*)Pyrite  (*)Pyrrhotite  (*)
Quartz  (*)Rosickýite  (*)Saponite  (*)Schröckingerite  (*)Smithsonite  (*)
Sphalerite  (*)Sulphur  (*)Taenite  (*)Talc  (*)Todorokite  (*)
Tungusite  (*)Uraninite  (*)Wulfenite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Analcime  (*)AnalcimeNa(AlSi2O6)·H2O25215183823,183893,183900,183906,1839111627
Arsenopyrite  (*)ArsenopyriteFeAsS11839079052
Aurichalcite  (*)None(Zn,Cu)5(CO3)2(OH)61183907919
Autunite  (*)AutuniteCa(UO2)2(PO4)2·10-12H2O2183877,1838791272
Azurite  (*)Not in a structural groupCu3(CO3)2(OH)23183907,183925,1839435509
Becquerelite  (*)NoneCa(UO2)6O4(OH)6·8H2O118387792
Boussingaultite  (*)Picromerite(NH4)2Mg(SO4)2·6H2O118391630
Calcite  (*)CalciteCa(CO3)25212183893,18390427770
Carnotite  (*)NoneK2(UO2)2(VO4)2·3H2O3183877,183878,1838811184
Celadonite  (*)Mica ClayKMgFe3+Si4O10(OH)21183913309
Cerussite  (*)AragonitePb(CO3)11839074979
Chalcopyrite  (*)ChalcopyriteCuFeS23183861,183907,18392527198
Colemanite  (*)NoneCaB3O4(OH)3·H2O252110183795,183858,183890,183891,183893,183895,183896,183900,183901,183902144
Cuprite  (*)Not in a structural groupCu2O11839252970
Epistilbite  (*)MordeniteCa3[Si18Al6O48]·16H2O1183911138
Fluorapatite  (*)ApatiteCa5(PO4)3F11837932740
Galena  (*)RocksaltPbS2183872,18390724243
Gold  (*)CopperAu5183819,183830,183861,183873,18387530554
Greenockite  (*)WurtziteCdS1183907717
Gypsum  (*)GypsumCa(SO4)·2H2O252118183751,183759,183761,183791,183795,183800,183802,183883,183886,183890,183891,183892,183893,183895,183896,183900,183901,1839026890
Hematite  (*)CorundumFe2O3118391314640
Howlite  (*)NoneCa2SiB5O9(OH)5118390036
Hydroboracite  (*)NoneCaMg[B3O4(OH)3]2·3H2O2521118389342
Hydroxyapophyllite-(K)  (*)ApophylliteKCa4Si8O20(OH,F)·8H2O118390685
Iron  (*)IronFe11839371089
Jarosite  (*)AluniteKFe3+3(SO4)2(OH)611838772228
Malachite  (*)MalachiteCu2(CO3)(OH)22183907,18392512537
Marcasite  (*)MarcasiteFeS211838615674
Mesolite  (*)NatroliteNa2Ca2(Si9Al6)O30·8H2O3183850,183887,183903425
Millerite  (*)MilleriteNiS11839251066
Molybdenite  (*)MolybdeniteMoS22183817,1838485800
Montmorillonite  (*)Clay Smectite-vermiculite(Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O4183765,183768,183769,1838771508
Mordenite  (*)Mordenite(Na2,Ca,K2)4(Al8Si40)O96·28H2O2183906,183911405
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)2118381617380
Natrolite  (*)NatroliteNa2(Si3Al2)O10·2H2O25212183887,1839111236
Opal  (*)AmorphousSiO2·nH2O2183761,1839132994
Pentlandite  (*)Pentlandite(Ni,Fe)9S811839251512
Pseudobrookite  (*)Pseudobrookite(Fe3+2Ti)O51183913164
Pyrite  (*)PyriteFeS23183861,183906,18390739462
Pyrrhotite  (*)NickelineFe7S811839259056
Quartz  (*)QuartzSiO26183861,183877,183906,183911,183913,18393361156
Rosickýite  (*)NoneS118392822
Saponite  (*)Clay Smectite-vermiculite(Ca,Na)0.3(Mg,Fe)3(Si,Al)4O10(OH)2·4H2O1183911301
Schröckingerite  (*)NoneNaCa3(UO2)(SO4)(CO3)3F·10H2O1183929128
Smithsonite  (*)CalciteZn(CO3)11839072473
Sphalerite  (*)SphaleriteZnS118390721482
Sulphur  (*)SulphurS11837632045
Taenite  (*)None(Ni,Fe)1183937703
Talc  (*)Clay TalcMg3Si4O10(OH)211837893337
Todorokite  (*)None(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12·3-4H2O1183907433
Tungusite  (*)GyroliteCa14Fe2+9Si24O60(OH)2211839067
Uraninite  (*)FluoriteUO211838772718
Wulfenite  (*)ScheelitePbMoO411839071655



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
NAVDAT-34021252123±2   34021    98391Frazier Mine (Frazier Borax Mine), Lockwood Valley, Lake Of The Woods Area, Ventura County Borate District (Stauffer District), San Emigdio Mts, Ventura Co., California, USA NAVDAT NAVDAT 
NAVDAT-34022252123±2   34022    98391Frazier Mine (Frazier Borax Mine), Lockwood Valley, Lake Of The Woods Area, Ventura County Borate District (Stauffer District), San Emigdio Mts, Ventura Co., California, USA NAVDAT NAVDAT 


SampleSource LocalityReference URL


All locality data graciously provided by mindat.org

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