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:
John Long Mountains Area, Granite Co., Montana, USA


mindat Locality ID: 186099
mindat URL: http://www.mindat.org/loc-186099.html

Tectonic Settings:

Total number of sublocalities beneath "John Long Mountains Area, Granite Co., Montana, USA": 7
Total number of bottom-level sublocalities: 7

Number of Child Localities: 7
Child Localities:
Douglas Mine
Franz Deposit (Franz Prospect)
Harvey Placer Placer
Last Chance Claim (Last Chance Tailings)
Mountain Ram Mine
NW Philipsburg Pumice Deposit
Peacock Mine (Tip Scott Property)

Latitude: 46°26'5"N
Longitude: 113°22'39"W
Decimal Degree (lat, lon): 46.434722222222,-113.3775

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 Ba C Ca Cu Fe H Mn O S Sb Si W 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
BaryteCalciteColumbiteCopperMalachiteNonePyriteQuartzScheeliteTetrahedrite

9 IMA Minerals at location:
Baryte  (*)Calcite  (*)Gold  (*)Hübnerite  (*)Malachite  (*)
Pyrite  (*)Quartz  (*)Scheelite  (*)Tetrahedrite-(Zn)  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Baryte  (*)BaryteBa(SO4)122855411547
Calcite  (*)CalciteCa(CO3)2228553,22855427770
Gold  (*)CopperAu5228550,228551,228552,228553,22855430554
Hübnerite  (*)ColumbiteMn2+(WO4)1228551469
Malachite  (*)MalachiteCu2(CO3)(OH)2122855312537
Pyrite  (*)PyriteFeS2122855439462
Quartz  (*)QuartzSiO24228550,228551,228553,22855461156
Scheelite  (*)ScheeliteCa(WO4)12285514894
Tetrahedrite-(Zn)  (*)TetrahedriteCu6(Cu4Zn2)Sb4S1312285535317



No ages have been assigned to this locality yet.

SampleSource LocalityReference URL


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