Mineral Evolution Database
Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.
Mineral locality data provided by mindat.org

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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:
Marshall Pass District, Gunnison Co., Colorado, USA


mindat Locality ID: 134819
mindat URL: http://www.mindat.org/loc-134819.html

Tectonic Settings:

Total number of sublocalities beneath "Marshall Pass District, Gunnison Co., Colorado, USA": 6
Total number of bottom-level sublocalities: 6

Number of Child Localities: 6
Child Localities:
Black Mesa Lode
Calcium Products Quarry
Goss And Barnes Claims
Little Indian No. 34 Prospect
Little Indian No. 36 Mine
Unknown Silver (MRDS - 10142072)

Latitude: 38°25'23"N
Longitude: 106°48'43"W
Decimal Degree (lat, lon): 38.423055555556,-106.81194444444
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: C Ca Fe H K Mg Na O P Si U 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AutuniteCorundumDiasporeFluoriteMeta-autuniteNoneSchoepite

11 IMA Minerals at location:
Autunite  (*)Becquerelite  (*)Boltwoodite  (*)Dolomite  (*)Goethite  (*)
Hematite  (*)Ianthinite  (*)Meta-autunite  (*)Schoepite  (*)Uraninite  (*)
Uranophane-α  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Autunite  (*)AutuniteCa(UO2)2(PO4)2·10-12H2O11897821272
Becquerelite  (*)NoneCa(UO2)6O4(OH)6·8H2O118978292
Boltwoodite  (*)None(K,Na)(UO2)(SiO3OH)·1.5H2O118978267
Dolomite  (*)NoneCaMg(CO3)211897819895
Goethite  (*)DiasporeFeO(OH)11897827437
Hematite  (*)CorundumFe2O3118978214640
Ianthinite  (*)NoneU4+2(UO2)4O6(OH)4·9H2O118978231
Meta-autunite  (*)Meta-autuniteCa(UO2)2(PO4)2·6H2O1189782388
Schoepite  (*)Schoepite(UO2)4O(OH)6(H2O)6118978294
Uraninite  (*)FluoriteUO211897822718
Uranophane-α  (*)NoneCa(UO2)2(SiO3OH)2·5H2O1189782890


No ages have been assigned to this locality yet.
SampleSource LocalityReference URL

All locality data graciously provided by mindat.org

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