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:
Little Three Mine (Little 3 Mine), Ramona, Ramona District, San Diego Co., California, USA

Oldest recorded age at locality: 99
Youngest recorded age at locality: 95

mindat Locality ID: 3561
mindat URL: http://www.mindat.org/loc-3561.html

Tectonic Settings:

Total number of sublocalities beneath "Little Three Mine (Little 3 Mine), Ramona, Ramona District, San Diego Co., California, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 33°3'25"N
Longitude: 116°47'35"W
Decimal Degree (lat, lon): 33.056944444444,-116.79305555556
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 B Ba Be Bi C Ca Cs F Fe H K Li Mg Mn Na Nb O P Pb Sb Si Sn Sr Ta V Zr 

Elements from minerals reported directly at this locality: Al B Ba Be Bi C Ca Cs F Fe H K Li Mg Mn Na Nb O P Pb Sb Si Sn Sr Ta V Zr 

Structural Groups for minerals in this locality: 
AnalcimeApatiteAragoniteArsenicAxiniteBerylBismutiteChloriteClayClinozoisite
ColumbiteDanburiteDiasporeEpidoteFeldsparGarnetKaoliniteMicaNoneNot in a structural group
PerovskiteQuartzRutileScheeliteSmectite-vermiculiteStilbiteTopazTourmalineZircon

41 IMA Minerals at location:
Albite  (*)Almandine  (*)Axinite-(Mn)  (*)Beryl  (*)Beyerite  (*)
Bismite  (*)Bismuth  (*)Bismutite  (*)Boromuscovite  (*)Cassiterite  (*)
Cerussite  (*)Clinozoisite  (*)Columbite-(Fe)  (*)Columbite-(Mn)  (*)Cookeite  (*)
Cryolite  (*)Danburite  (*)Elbaite  (*)Epidote  (*)Fluorapatite  (*)
Foitite  (*)Goethite  (*)Hambergite  (*)Kaolinite  (*)Laumontite  (*)
Microcline  (*)Montmorillonite  (*)Muscovite  (*)Orthoclase  (*)Pollucite  (*)
Pucherite  (*)Quartz  (*)Schorl  (*)Spessartine  (*)Stibiocolumbite  (*)
Stibiotantalite  (*)Stilbite-Ca  (*)Todorokite  (*)Topaz  (*)Vermiculite  (*)
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)999508803
Almandine  (*)GarnetFe2+3Al2(SiO4)3999502353
Axinite-(Mn)  (*)AxiniteCa4Mn2+2Al4[B2Si8O30](OH)29995088
Beryl  (*)BerylBe3Al2Si6O18999504286
Beyerite  (*)BismutiteCaBi2O2(CO3)29995096
Bismite  (*)NoneBi2O399950214
Bismuth  (*)ArsenicBi999501966
Bismutite  (*)BismutiteBi2O2(CO3)99950716
Boromuscovite  (*)MicaKAl2(Si3B)O10(OH)2999505
Cassiterite  (*)RutileSnO2999505171
Cerussite  (*)AragonitePb(CO3)999504979
Clinozoisite  (*)Clinozoisite EpidoteCa2Al3[Si2O7][SiO4]O(OH)999501025
Columbite-(Fe)  (*)ColumbiteFe2+Nb2O699950518
Columbite-(Mn)  (*)ColumbiteMn2+Nb2O699950289
Cookeite  (*)Chlorite Clay(Al,Li)3Al2(Si,Al)4O10(OH)899950181
Cryolite  (*)PerovskiteNa2NaAlF69995050
Danburite  (*)DanburiteCaB2Si2O899950148
Elbaite  (*)TourmalineNa(Al1.5Li1.5)Al6(Si6O18)(BO3)3(OH)3(OH)99950520
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)999508173
Fluorapatite  (*)ApatiteCa5(PO4)3F999502740
Foitite  (*)Tourmaline   (Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3(OH)9995075
Goethite  (*)DiasporeFeO(OH)999507437
Hambergite  (*)NoneBe2(BO3)(OH)9995081
Kaolinite  (*)Clay KaoliniteAl2Si2O5(OH)4999505591
Laumontite  (*)Not in a structural groupCaAl2Si4O12·4H2O999501271
Microcline  (*)FeldsparK(AlSi3O8)999504924
Montmorillonite  (*)Clay Smectite-vermiculite(Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O999501508
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)29995017380
Orthoclase  (*)FeldsparK(AlSi3O8)999502349
Pollucite  (*)AnalcimeCs(Si2Al)O6·nH2O99950140
Pucherite  (*)ScheeliteBi(VO4)9995053
Quartz  (*)QuartzSiO29995061156
Schorl  (*)TourmalineNaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)999502705
Spessartine  (*)GarnetMn2+3Al2(SiO4)3999501214
Stibiocolumbite  (*)NoneSbNbO49995013
Stibiotantalite  (*)NoneSb3+TaO49995053
Stilbite-Ca  (*)StilbiteNaCa4(Si27Al9)O72·28H2O99950268
Todorokite  (*)None(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12·3-4H2O99950433
Topaz  (*)TopazAl2SiO4F2999501476
Vermiculite  (*)Clay Smectite-vermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4·8H2O99950652
Zircon  (*)ZirconZr(SiO4)999505251


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
Bradley_2012_014999597±2Ar/Ar muscovite   Muscovite  3561Little Three Mine (Little 3 Mine), Ramona, Ramona District, San Diego Co., California, USALittle Three MineMcCauley and Bradley (2014)10.3749/canmin.52.2.183CM52_183 

SampleSource LocalityReference URL
R070107Little Three Mine (Little 3 Mine), Ramona, Ramona District, San Diego Co., California, USAhttps://rruff.info/R070107

All locality data graciously provided by mindat.org

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