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:
Rock Creek Mining District, Granite Co., Montana, USA


mindat Locality ID: 186104
mindat URL: http://www.mindat.org/loc-186104.html

Tectonic Settings:

Total number of sublocalities beneath "Rock Creek Mining District, Granite Co., Montana, USA": 23
Total number of bottom-level sublocalities: 23

Number of Child Localities: 23
Child Localities:
Antelope Creek
Bagdad Mine
Basin And Quartz Creek Placers (Basin Gulch; Quartz Gulch)
Blue Bell Lode Prospect
Cabin Home
Canyon Group (Stony Mountain; Stony Mountain Extension; Canyon; Canyon Extension)
Gem Mountain Sapphire Mine (American Sapphire Gem Mine; Chaussee Sapphire Mine)
Grey Eagle Nos. 1-4 Prospect
Grub Stake Prospect (Mastadon; Napoleon; Black Bear)
Hard Tack Nos. 1 And 2 Prospect
Little Stony Creek Placer
Moffat Gulch
Rock Creek Sapphire (American Sapphire Gem Mine; Gem Mountain Mine; Anaconda-Sapphire Gulches; Chaussee Sapphire Corp. Mine; American Gem Corp.)
Sand Basin Placers
Silver King Mine (Ozar)
Skalkaho Grazing Company
Stony Creek Placer
Twentieth Century Prospect
Twin Silver Prospect
Unnamed Gold Prospect (MRDS - 10173068)
Unnamed Gold Prospect (MRDS - 10197056)
Unnamed Gold Prospect (MRDS - 10269988)
Unnamed Gold Prospect (MRDS - 10270323)

Latitude: 46°17'51"N
Longitude: 113°37'46"W
Decimal Degree (lat, lon): 46.2975,-113.62944444444
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 Au Ca Ce Cu Fe Nb O S Sb Si Ta Th Ti U Y Zr 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
ColumbiteCopperCorundumFluoriteGarnetNoneNot in a structural groupPyriteRutileSpinel
TetrahedriteTitaniteZircon

14 IMA Minerals at location:
Almandine  (*)Copper  (*)Corundum  (*)Euxenite-(Y)  (*)Gold  (*)
Hematite  (*)Kyanite  (*)Magnetite  (*)Pyrite  (*)Rutile  (*)
Tetrahedrite-(Zn)  (*)Thorianite  (*)Titanite  (*)Zircon  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Almandine  (*)GarnetFe2+3Al2(SiO4)312288022353
Copper  (*)CopperCu12288043846
Corundum  (*)CorundumAl2O312288021797
Euxenite-(Y)  (*)ColumbiteY(NbTi)O61228803414
Gold  (*)CopperAu122879230554
Hematite  (*)CorundumFe2O3122880214640
Kyanite  (*)Not in a structural groupAl2OSiO412288021507
Magnetite  (*)SpinelFe2+Fe3+2O4122880214899
Pyrite  (*)PyriteFeS2122880439462
Rutile  (*)RutileTiO212288025614
Tetrahedrite-(Zn)  (*)TetrahedriteCu6(Cu4Zn2)Sb4S1312288045317
Thorianite  (*)FluoriteThO21228803236
Titanite  (*)TitaniteCaTi(SiO4)O12288034899
Zircon  (*)ZirconZr(SiO4)12288035251


No ages have been assigned to this locality yet.
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