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:
Middle Fork District, Valley Co., Idaho, USA


mindat Locality ID: 280440
mindat URL: http://www.mindat.org/loc-280440.html

Tectonic Settings:

Total number of sublocalities beneath "Middle Fork District, Valley Co., Idaho, USA": 30
Total number of bottom-level sublocalities: 29

Number of Child Localities: 14
Child Localities:
Bandit Occurrence
Big Horn Prospect (High Flyer Group)
Half Moon Claims Nos. 2 & 3
Heatherington Placer
Idaho Primitive Area
Kimmel Creek Prospect
Krassel Occurrence
Lower Survey Creek Prospect
Sullivan Uranium Prospect
Survey Creek Placer
Tappen Ranch Placer
Upper And Lower Pine Creek
Upper Red Bluff Placer
Woolard Creek Bar Occurrence

Latitude: 44°56'12"N
Longitude: 114°59'23"W
Decimal Degree (lat, lon): 44.936666666667,-114.98972222222

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 C Ca Cu F Fe H Mg O S Si Th Ti 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
CalciteChalcopyriteCopperCorundumFluoriteMalachiteNonePyriteQuartzZircon

12 IMA Minerals at location:
Bornite  (*)Calcite  (*)Chalcopyrite  (*)Dolomite  (*)Fluorite  (*)
Gold  (*)Hematite  (*)Ilmenite  (*)Malachite  (*)Pyrite  (*)
Quartz  (*)Thorite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Bornite  (*)NoneCu5FeS412117875516
Calcite  (*)CalciteCa(CO3)121177927770
Chalcopyrite  (*)ChalcopyriteCuFeS23211787,211789,21180227198
Dolomite  (*)NoneCaMg(CO3)212118029895
Fluorite  (*)FluoriteCaF212118029617
Gold  (*)CopperAu2211788,21180330554
Hematite  (*)CorundumFe2O32211779,21178914640
Ilmenite  (*)CorundumFe2+Ti4+O32211788,2118035433
Malachite  (*)MalachiteCu2(CO3)(OH)25211779,211787,211789,211801,21180212537
Pyrite  (*)PyriteFeS22211779,21180239462
Quartz  (*)QuartzSiO25211779,211787,211789,211801,21180261156
Thorite  (*)ZirconTh(SiO4)12118021006



No ages have been assigned to this locality yet.

SampleSource LocalityReference URL


All locality data graciously provided by mindat.org

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