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:
Forest Falls (Fallsvale; Fallsville; Forest Home), San Bernardino Mts, San Bernardino Co., California, USA


mindat Locality ID: 273131
mindat URL: http://www.mindat.org/loc-273131.html

Tectonic Settings:

Total number of sublocalities beneath "Forest Falls (Fallsvale; Fallsville; Forest Home), San Bernardino Mts, San Bernardino Co., California, USA": 6
Total number of bottom-level sublocalities: 6

Number of Child Localities: 6
Child Localities:
Mill Creek
Mill Creek Mine (Mill Creek Limestone Company)
Road End Occurrence
Southern California Sandstone Quarry (So. Calif. Sandstone)
St. Patrick's Group (St. Patrick Claim; Alger Creek Claims)
Unnamed U-Th-REE Prospects [1]

Latitude: 34°5'27"N
Longitude: 116°53'14"W
Decimal Degree (lat, lon): 34.090833333333,-116.88722222222

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 C Ca Ce Fe H K O S Si Th W 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AllaniteCalciteClayClinozoisiteEpidoteFeldsparGarnetMicaNonePyrite
QuartzScheeliteSpinelZircon

11 IMA Minerals at location:
Allanite-(Ce)  (*)Almandine  (*)Calcite  (*)Epidote  (*)Magnetite  (*)
Muscovite  (*)Orthoclase  (*)Pyrite  (*)Quartz  (*)Scheelite  (*)
Thorite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Allanite-(Ce)  (*)Allanite EpidoteCaCe(Al2Fe2+)[Si2O7][SiO4]O(OH)1173509706
Almandine  (*)GarnetFe2+3Al2(SiO4)311735042353
Calcite  (*)CalciteCa(CO3)117350427770
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)11735048173
Magnetite  (*)SpinelFe2+Fe3+2O43173504,173508,17350914899
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)2117350417380
Orthoclase  (*)FeldsparK(AlSi3O8)11735042349
Pyrite  (*)PyriteFeS2117350439462
Quartz  (*)QuartzSiO2117350461156
Scheelite  (*)ScheeliteCa(WO4)11735044894
Thorite  (*)ZirconTh(SiO4)2173508,1735091006



No ages have been assigned to this locality yet.

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All locality data graciously provided by mindat.org

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