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:
Castaic, Sierra Pelona Mts (Sierra Pelona Range), Los Angeles Co., California, USA


mindat Locality ID: 222409
mindat URL: http://www.mindat.org/loc-222409.html

Tectonic Settings:

Total number of sublocalities beneath "Castaic, Sierra Pelona Mts (Sierra Pelona Range), Los Angeles Co., California, USA": 24
Total number of bottom-level sublocalities: 19

Number of Child Localities: 18
Child Localities:
All For One Placer Mine
Blue Cloud Chinchilla Dust Mine (Blue Cloud Deposit)
Blue Goose Mine
Castaic Quarry (Southern California Brick Company; Castaic Brick Company)
Castaic Valley Placers
Charlie Canyon Deposit (Charlie Canyon Gypsum Deposit; San Francisquito Canyon Deposit)
Dry Canyon Lease Placer Mine
Elizabeth Lake Canyon
Fish Canyon
Fox Placer Prospect (Fox No. 2)
Great West Prospect
Raggio's Franciscan & Silver Sheen Mine (Reggio S Franciscan And Silver Mine)
Rose Hill Placer Prospect
San Francisquito Canyon
Scorella Placers
Silver Mountain Prospect
Skipper Placer Prospect (Skipper Nos. 1 And 2)
Tuch & Dether Placer Mine

Latitude: 34°30'51"N
Longitude: 118°32'38"W
Decimal Degree (lat, lon): 34.514166666667,-118.54388888889

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 Au C Ca H Na O S Si Th 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
ClayCopperGypsumNoneNot in a structural groupSmectite-vermiculiteZircon

6 IMA Minerals at location:
Beidellite  (*)Gold  (*)Graphite  (*)Gypsum  (*)Sillimanite  (*)
Thorite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Beidellite  (*)Clay Smectite-vermiculite(Na,Ca)0.3Al2(Si,Al)4O10(OH)2·nH2O116181885
Gold  (*)CopperAu4161811,161813,161826,16183030554
Graphite  (*)NoneC2161816,1618182812
Gypsum  (*)GypsumCa(SO4)·2H2O11618126890
Sillimanite  (*)Not in a structural groupAl2SiO53161816,161818,1618251516
Thorite  (*)ZirconTh(SiO4)11618201006



No ages have been assigned to this locality yet.

SampleSource LocalityReference URL


All locality data graciously provided by mindat.org

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