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:
Cahuilla District, Riverside Co., California, USA


mindat Locality ID: 25824
mindat URL: http://www.mindat.org/loc-25824.html

Tectonic Settings:

Total number of sublocalities beneath "Cahuilla District, Riverside Co., California, USA": 43
Total number of bottom-level sublocalities: 34

Number of Child Localities: 8
Child Localities:
Anza Valley
Bautista Canyon
Cahuilla Mountain
Little Cahuilla Mountain
Mine-All-Mine
Red Mountain
Thomas Mountain [town]
Tripp Flats

Latitude: 33°36'39"N
Longitude: 116°45'51"W
Decimal Degree (lat, lon): 33.610833333333,-116.76416666667

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 Be Ca Ce F Fe H K Li Mg Mn Na Nb O P Sb Si Sn Ta Ti Y Zr 

Elements from minerals reported directly at this locality: Al Ca H O Si 

Structural Groups for minerals in this locality: 
AndalusiteApatiteAxiniteBerylChloriteClayClinozoisiteColumbiteCorundumEpidote
FeldsparGarnetKaoliniteMicaMonaziteNoneNot in a structural groupPrehnitePyroxeneQuartz
RutileSmectite-vermiculiteSpinelTourmalineZircon

32 IMA Minerals at location:
Albite  (*)Almandine  (*)Amblygonite  (*)Andalusite  (*)Axinite-(Fe)  (*)
Beryl  (*)Cassiterite  (*)Columbite-(Fe)  (*)Columbite-(Mn)  (*)Cookeite  (*)
Corundum  (*)Elbaite  (*)Epidote  (*)Fluorapatite  (*)Foitite  (*)
Ilmenite  (*)Kaolinite  (*)Laumontite  (*)Microcline  (*)Monazite-(Ce)  (*)
Montmorillonite  (*)Muscovite  (*)Orthoclase  (*)Prehnite  (*)Quartz  (*)
Schorl  (*)Spessartine  (*)Spinel  (*)Spodumene  (*)Stibiotantalite  (*)
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)10168843,168854,168861,168862,168865,168866,168867,168868,168871,1688748803
Almandine  (*)GarnetFe2+3Al2(SiO4)36168854,168862,168865,168868,168871,1688742353
Amblygonite  (*)NoneLiAl(PO4)F2168854,168866244
Andalusite  (*)AndalusiteAl2SiO511688641310
Axinite-(Fe)  (*)AxiniteCa4Fe2+2Al4[B2Si8O30](OH)21168865260
Beryl  (*)BerylBe3Al2Si6O186168854,168865,168866,168867,168868,1688704286
Cassiterite  (*)RutileSnO22168865,1688665171
Columbite-(Fe)  (*)ColumbiteFe2+Nb2O61168862518
Columbite-(Mn)  (*)ColumbiteMn2+Nb2O61168866289
Cookeite  (*)Chlorite Clay(Al,Li)3Al2(Si,Al)4O10(OH)81168871181
Corundum  (*)CorundumAl2O311688641797
Elbaite  (*)TourmalineNa(Al1.5Li1.5)Al6(Si6O18)(BO3)3(OH)3(OH)6168854,168866,168868,168870,168874,168879520
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)11688688173
Fluorapatite  (*)ApatiteCa5(PO4)3F2168848,1688652740
Foitite  (*)Tourmaline   (Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3(OH)116887075
Ilmenite  (*)CorundumFe2+Ti4+O311688655433
Kaolinite  (*)Clay KaoliniteAl2Si2O5(OH)42168871,1688745591
Laumontite  (*)Not in a structural groupCaAl2Si4O12·4H2O01271
Microcline  (*)FeldsparK(AlSi3O8)10168843,168848,168854,168864,168865,168866,168867,168868,168871,1688744924
Monazite-(Ce)  (*)MonaziteCe(PO4)1168865945
Montmorillonite  (*)Clay Smectite-vermiculite(Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O11688741508
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)211168848,168853,168854,168862,168864,168865,168866,168867,168868,168871,16887417380
Orthoclase  (*)FeldsparK(AlSi3O8)4168848,168865,168868,1688712349
Prehnite  (*)PrehniteCa2Al(Si3Al)O10(OH)211688511898
Quartz  (*)QuartzSiO216168844,168848,168851,168854,168862,168864,168865,168866,168867,168868,168870,168871,168872,168874,168879,16888261156
Schorl  (*)TourmalineNaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)11168844,168848,168854,168864,168865,168866,168867,168868,168871,168874,1688792705
Spessartine  (*)GarnetMn2+3Al2(SiO4)33168854,168865,1688741214
Spinel  (*)SpinelMgAl2O42168846,1688801934
Spodumene  (*)PyroxeneLiAlSi2O62168854,168866688
Stibiotantalite  (*)NoneSb3+TaO4116886253
Xenotime-(Y)  (*)ZirconY(PO4)1168865939
Zircon  (*)ZirconZr(SiO4)11688685251



No ages have been assigned to this locality yet.

SampleSource LocalityReference URL
R050258Bautista Canyon, Cahuilla District, Riverside Co., California, USAhttps://rruff.info/R050258
X050141Cahuilla Mountain, Cahuilla District, Riverside Co., California, USAhttps://rruff.info/X050141


All locality data graciously provided by mindat.org

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