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:
Electric City, Grant Co., Washington, USA


mindat Locality ID: 267452
mindat URL: http://www.mindat.org/loc-267452.html

Tectonic Settings:

Total number of sublocalities beneath "Electric City, Grant Co., Washington, USA": 7
Total number of bottom-level sublocalities: 7

Number of Child Localities: 7
Child Localities:
Grand Coulee
Black-Rosauer Mine (Daniels; Big Four; Electric City)
Hope No. 1
Jones Bay
Osborn Bay (East)
Osborn Bay (West)
Silver Queen

Latitude: 47°54'28"N
Longitude: 119°2'47"W
Decimal Degree (lat, lon): 47.907777777778,-119.04638888889

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 Ca F Fe H K Mn Mo Nb O P Pb S Si Ti Y 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
ApatiteClayColumbiteFeldsparGarnetMicaMolybdeniteNonePyriteQuartz
RocksaltSpinel

10 IMA Minerals at location:
Annite  (*)Fluorapatite  (*)Galena  (*)Magnetite  (*)Molybdenite  (*)
Orthoclase  (*)Polycrase-(Y)  (*)Pyrite  (*)Quartz  (*)Spessartine  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Annite  (*)Mica ClayKFe2+3(AlSi3O10)(OH)21284306356
Fluorapatite  (*)ApatiteCa5(PO4)3F12843062740
Galena  (*)RocksaltPbS128430424243
Magnetite  (*)SpinelFe2+Fe3+2O4128430614899
Molybdenite  (*)MolybdeniteMoS212843045800
Orthoclase  (*)FeldsparK(AlSi3O8)12843062349
Polycrase-(Y)  (*)ColumbiteY(Ti,Nb)2(O,OH)61284303121
Pyrite  (*)PyriteFeS22284304,28430639462
Quartz  (*)QuartzSiO2128430661156
Spessartine  (*)GarnetMn2+3Al2(SiO4)312843061214



No ages have been assigned to this locality yet.

SampleSource LocalityReference URL


All locality data graciously provided by mindat.org

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