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:
Fawnskin (Grout), Bear Valley District, San Bernardino Mts, San Bernardino Co., California, USA


mindat Locality ID: 273027
mindat URL: http://www.mindat.org/loc-273027.html

Tectonic Settings:

Total number of sublocalities beneath "Fawnskin (Grout), Bear Valley District, San Bernardino Mts, San Bernardino Co., California, USA": 27
Total number of bottom-level sublocalities: 27

Number of Child Localities: 27
Child Localities:
1 Lost Mine
Claudia Quarry
Courtland Mine
Desert View Mine
Dorothy No. 2 Occurrence (Dorothy #2)
Gail Claim (Madison Claim; Glacier Claim; Vulture Claim)
Glacier Placer Mine
Gleamo Prospect
Goldpan No. 1 Prospect (Goldpan #1)
Green Glow Mine
Green Lead Mine
Green Lead Mine (Greenlead Mine)
Harvey K Mine (Hepburn)
Honaday Prospect (Honeday)
Lee Mine
Mother Lode Occurrence (Atta Boy; Mother Lode Millsite; Mother Lode North; Gerita)
Nonaday Mine
Old Glory Occurrence (Peg Leg)
Old Pen Mine
Sharpless Dolomite
Silver Top Mine (Silver Tip Mine)
Unnamed Au Occurrence [11]
Unnamed Au Occurrence [8]
Unnamed Tremolite Occurrence [1]
Wild Rose Mine (Wild Rose Group Of Claims)
Wright Mine
Yerih Group Of Claims (Yerih Group)

Latitude: 34°18'19"N
Longitude: 116°56'18"W
Decimal Degree (lat, lon): 34.305277777778,-116.93833333333
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 B C Ca Cu F Fe H K Mg Mn O P Si Zn 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AmphiboleApatiteAxiniteCalciteClinozoisiteCopperCorundumEpidoteFeldsparGarnet
MeliliteNonePhenakiteQuartzSpinelWollastoniteWurtzite

19 IMA Minerals at location:
Andradite  (*)Axinite-(Mn)  (*)Calcite  (*)Copper  (*)Epidote  (*)
Fluorapatite  (*)Franklinite  (*)Gold  (*)Grossular  (*)Hardystonite  (*)
Hematite  (*)Hetaerolite  (*)Magnetite  (*)Microcline  (*)Quartz  (*)
Tremolite  (*)Willemite  (*)Wollastonite  (*)Zincite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Andradite  (*)GarnetCa3Fe3+2(SiO4)311734061534
Axinite-(Mn)  (*)AxiniteCa4Mn2+2Al4[B2Si8O30](OH)2117341488
Calcite  (*)CalciteCa(CO3)2173406,17341427770
Copper  (*)CopperCu11734063846
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)11734068173
Fluorapatite  (*)ApatiteCa5(PO4)3F11734142740
Franklinite  (*)SpinelZnFe3+2O4117340652
Gold  (*)CopperAu5173409,173415,173419,173427,17342830554
Grossular  (*)GarnetCa3Al2(SiO4)311734061544
Hardystonite  (*)MeliliteCa2ZnSi2O7117340614
Hematite  (*)CorundumFe2O3117340614640
Hetaerolite  (*)SpinelZnMn3+2O4117340673
Magnetite  (*)SpinelFe2+Fe3+2O4117340614899
Microcline  (*)FeldsparK(AlSi3O8)11734064924
Quartz  (*)QuartzSiO25173406,173415,173419,173421,17342861156
Tremolite  (*)Amphibole   Ca2(Mg5.0-4.5Fe2+0.0-0.5)Si8O22(OH)22173426,1734272562
Willemite  (*)PhenakiteZn2SiO42173406,173414303
Wollastonite  (*)WollastoniteCaSiO32173406,1734141247
Zincite  (*)WurtziteZnO117340698


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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