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:
Mackinaw District, Lemhi Co., Idaho, USA


mindat Locality ID: 278287
mindat URL: http://www.mindat.org/loc-278287.html

Tectonic Settings:

Total number of sublocalities beneath "Mackinaw District, Lemhi Co., Idaho, USA": 55
Total number of bottom-level sublocalities: 54

Number of Child Localities: 30
Child Localities:
Arnett Creek Project (Arnett Hardrock; Arnett Placer)
Beaver Creek Placer
Bridge Creek Gold Prospect
Butschke Placer
Clear Creek Deposit
Clipper Bullion Mine
Coffee Gulch Placer
Copper King Prospect (1)
Damela Rose Prospect
Dixie Placer
Growler Gold Prospect (Dorothy J. And Growler Claims)
Haidee Prospect
Hempstead Claims
Idaho Primitive Area
Italian Mine (Golden Fissure)
Lower Mackinaw Creek Placers
Mayflower Group Occurrence
McNutt (Moose Creek)
Moose Creek Placer (Mullan Placer)
Pamela Rose
Phelan Creek Placer
Ringbone Cayuse Mine
Sunbeam And Sunbeam Nos. 1 And 2
Thompson And Hibbs Prospect
True Fissure Occurrence
Unnamed Gold Location (MRDS - 10120005)
Unnamed Gold Location (MRDS - 10241799)
Unnamed Gold Location (MRDS - 10266441)
Unnamed Gold Location (MRDS - 10290478)
Upper Mackinaw Creek Placers

Latitude: 45°15'29"N
Longitude: 114°11'55"W
Decimal Degree (lat, lon): 45.258055555556,-114.19861111111
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 Ba Ca Cu Fe H K Mn O Pb S Si Zn 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
BaryteChalcopyriteClayClinozoisiteCopperCorundumEpidoteMicaNonePyrite
QuartzRocksaltRutileSphaleriteSpinel

13 IMA Minerals at location:
Baryte  (*)Chalcopyrite  (*)Epidote  (*)Galena  (*)Gold  (*)
Hematite  (*)Magnetite  (*)Muscovite  (*)Pyrite  (*)Pyrolusite  (*)
Quartz  (*)Silver  (*)Sphalerite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Baryte  (*)BaryteBa(SO4)120987211547
Chalcopyrite  (*)ChalcopyriteCuFeS24209874,209905,209906,20990827198
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)12099088173
Galena  (*)RocksaltPbS5209872,209878,209897,209901,20990624243
Gold  (*)CopperAu16209868,209869,209870,209873,209882,209883,209884,209886,209887,209888,209894,209900,209902,209904,209907,20992130554
Hematite  (*)CorundumFe2O32209869,20990614640
Magnetite  (*)SpinelFe2+Fe3+2O43209874,209885,20990814899
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)2120989017380
Pyrite  (*)PyriteFeS213209869,209872,209874,209878,209882,209886,209890,209897,209899,209901,209905,209906,20990839462
Pyrolusite  (*)RutileMnO22209872,2099063106
Quartz  (*)QuartzSiO211209872,209874,209878,209890,209891,209897,209899,209901,209905,209906,20990861156
Silver  (*)CopperAg12098885186
Sphalerite  (*)SphaleriteZnS6209872,209878,209890,209897,209901,20990621482


No ages have been assigned to this locality yet.
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All locality data graciously provided by mindat.org

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