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:
Twisp, Twisp District, Okanogan Co., Washington, USA


mindat Locality ID: 31143
mindat URL: http://www.mindat.org/loc-31143.html

Tectonic Settings:

Total number of sublocalities beneath "Twisp, Twisp District, Okanogan Co., Washington, USA": 3
Total number of bottom-level sublocalities: 3

Number of Child Localities: 3
Child Localities:
Alder Mine
Spokane Mine (Gold Crown Mine)
Windfall Prospect

Latitude: 48°20'52"N
Longitude: 120°9'22"W
Decimal Degree (lat, lon): 48.347777777778,-120.15611111111
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: Ag As Au C Ca Cl Cu Fe H O Pb S Sb Si Zn 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
ArsenopyriteCalciteChalcanthiteChalcopyriteCopperMalachiteNickelineNoneNot in a structural groupPyrite
QuartzRocksaltSphalerite

16 IMA Minerals at location:
Arsenopyrite  (*)Azurite  (*)Calcite  (*)Chalcanthite  (*)Chalcocite  (*)
Chalcopyrite  (*)Chlorargyrite  (*)Copper  (*)Galena  (*)Gold  (*)
Malachite  (*)Pyrite  (*)Pyrrhotite  (*)Quartz  (*)Sphalerite  (*)
Stephanite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Arsenopyrite  (*)ArsenopyriteFeAsS12851969052
Azurite  (*)Not in a structural groupCu3(CO3)2(OH)212851955509
Calcite  (*)CalciteCa(CO3)128519627770
Chalcanthite  (*)ChalcanthiteCu(SO4)·5H2O1285195925
Chalcocite  (*)NoneCu2S12851955707
Chalcopyrite  (*)ChalcopyriteCuFeS22285195,28519627198
Chlorargyrite  (*)RocksaltAgCl12851971382
Copper  (*)CopperCu12851953846
Galena  (*)RocksaltPbS2285195,28519624243
Gold  (*)CopperAu128519530554
Malachite  (*)MalachiteCu2(CO3)(OH)2128519512537
Pyrite  (*)PyriteFeS2128519639462
Pyrrhotite  (*)NickelineFe7S812851959056
Quartz  (*)QuartzSiO2128519661156
Sphalerite  (*)SphaleriteZnS2285195,28519621482
Stephanite  (*)NoneAg5SbS41285197586


No ages have been assigned to this locality yet.

All locality data graciously provided by mindat.org

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