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:
Little Rockies Mining District, Phillips Co., Montana, USA


mindat Locality ID: 50250
mindat URL: http://www.mindat.org/loc-50250.html

Tectonic Settings:

Total number of sublocalities beneath "Little Rockies Mining District, Phillips Co., Montana, USA": 40
Total number of bottom-level sublocalities: 37

Number of Child Localities: 35
Child Localities:
Alder Gulch
Alder Mine
Antone Peak Occurrence
August Mine
Bailey Group
Beaver Mine
Blue Rock Placer
Camp Creek Placer
Camp Prospect (William J.)
Frank Mine (John Mione)
Gold Bug Mine
Grouse Gulch
Hawkeye
Humbolt Mine
Jack Deuce
Landusky (Zortman-Landusky Mine - 0300710080; Montana Mine)
Linda Kay Mine
Little Ben (Gold Bug)
Little Rockies Mining Company
Lodgepole Creek
Lucky Maud
Peoples Creek
Pinkeye Occurrence
Rock Creek
Ruby Gulch Group
Ruby Gulch Group (Ruby; Mint)
Ruby Gulch Mine
Sullivan Creek
Surprise Mine
U. S. Exploration Group
Unnamed Gold Mine (MRDS - 10124399)
Unnamed Limestone Occurrence (MRDS - 10221825)
Unnamed Molybdenum Occurrence (MRDS - 10148835)
War Eagle Occurrence
Zortman-Landusky Mine (Zortman Mine)

Latitude: 47°55'19"N
Longitude: 108°34'9"W
Decimal Degree (lat, lon): 47.921944444444,-108.56916666667

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 Al Au Ca Cu F Fe H K O S Si Te Zn 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
ChalcopyriteClayCopperFluoriteMeloniteMicaNonePyriteQuartzSphalerite

10 IMA Minerals at location:
Calaverite  (*)Chalcopyrite  (*)Fluorite  (*)Gold  (*)Hessite  (*)
Muscovite  (*)Pyrite  (*)Quartz  (*)Sphalerite  (*)Sylvanite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Calaverite  (*)MeloniteAuTe21232760361
Chalcopyrite  (*)ChalcopyriteCuFeS2123276127198
Fluorite  (*)FluoriteCaF23232725,232751,2327609617
Gold  (*)CopperAu3232732,232751,23276030554
Hessite  (*)NoneAg2Te2232732,232760804
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)2123275117380
Pyrite  (*)PyriteFeS24232732,232751,232760,23276139462
Quartz  (*)QuartzSiO23232732,232751,23276061156
Sphalerite  (*)SphaleriteZnS123276121482
Sylvanite  (*)MeloniteAgAuTe42232732,232760337



No ages have been assigned to this locality yet.

SampleSource LocalityReference URL


All locality data graciously provided by mindat.org

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