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:
Cascade Pass, Cascade District, Skagit Co., Washington, USA


mindat Locality ID: 28454
mindat URL: http://www.mindat.org/loc-28454.html

Tectonic Settings:

Total number of sublocalities beneath "Cascade Pass, Cascade District, Skagit Co., Washington, USA": 4
Total number of bottom-level sublocalities: 4

Number of Child Localities: 4
Child Localities:
Boston Basin Mine
Cascade Pass Area
Johnsburg Mine
Triplets Peak

Latitude: 48°28'15"N
Longitude: 121°5'13"W
Decimal Degree (lat, lon): 48.470833333333,-121.08694444444

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 As C Ca Cl Cu Fe H Mg O Pb S Si Zn 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
ApatiteAragoniteBaryteCalciteChalcopyriteGarnetLinariteMalachiteNoneNot in a structural group
PyriteQuartzRocksaltSphaleriteStaurolite

16 IMA Minerals at location:
Anglesite  (*)Azurite  (*)Calcite  (*)Cerussite  (*)Chalcopyrite  (*)
Galena  (*)Grossular  (*)Kyanite  (*)Linarite  (*)Malachite  (*)
Mimetite  (*)Pyrite  (*)Pyrope  (*)Quartz  (*)Sphalerite  (*)
Staurolite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Anglesite  (*)BarytePb(SO4)12854382734
Azurite  (*)Not in a structural groupCu3(CO3)2(OH)212854385509
Calcite  (*)CalciteCa(CO3)128543827770
Cerussite  (*)AragonitePb(CO3)12854384979
Chalcopyrite  (*)ChalcopyriteCuFeS22285436,28543827198
Galena  (*)RocksaltPbS128543824243
Grossular  (*)GarnetCa3Al2(SiO4)312854361544
Kyanite  (*)Not in a structural groupAl2OSiO412854381507
Linarite  (*)LinariteCuPb(SO4)(OH)21285438987
Malachite  (*)MalachiteCu2(CO3)(OH)2128543812537
Mimetite  (*)ApatitePb5(AsO4)3Cl12854381107
Pyrite  (*)PyriteFeS2128543639462
Pyrope  (*)GarnetMg3Al2(SiO4)31285437341
Quartz  (*)QuartzSiO23285436,285438,28543961156
Sphalerite  (*)SphaleriteZnS128543821482
Staurolite  (*)StauroliteFe2+2Al9Si4O23(OH)1285438978



No ages have been assigned to this locality yet.

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