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:
Twin Lakes, Mount Baker District, Whatcom Co., Washington, USA


mindat Locality ID: 275196
mindat URL: http://www.mindat.org/loc-275196.html

Tectonic Settings:

Total number of sublocalities beneath "Twin Lakes, Mount Baker District, Whatcom Co., Washington, USA": 1
Total number of bottom-level sublocalities: 1

Number of Child Localities: 1
Child Localities:
Lone Jack Mine (Mount Baker Mine; Post-Lambert Mine; Brooks-Willis Mine; Boundary Gold Mine)

Latitude: 48°56'41"N
Longitude: 121°37'7"W
Decimal Degree (lat, lon): 48.944722222222,-121.61861111111

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: Au Bi Fe O S Si Te 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
CopperMeloniteNickelineNonePyriteQuartzTetradymite

6 IMA Minerals at location:
Calaverite  (*)Gold  (*)Pyrite  (*)Pyrrhotite  (*)Quartz  (*)
Tellurobismuthite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Calaverite  (*)MeloniteAuTe21286290361
Gold  (*)CopperAu128629030554
Pyrite  (*)PyriteFeS2128629039462
Pyrrhotite  (*)NickelineFe7S812862909056
Quartz  (*)QuartzSiO2128629061156
Tellurobismuthite  (*)TetradymiteBi2Te31286290276



No ages have been assigned to this locality yet.

SampleSource LocalityReference URL


All locality data graciously provided by mindat.org

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