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:
Foothill District, Jefferson Co., Colorado, USA


mindat Locality ID: 257718
mindat URL: http://www.mindat.org/loc-257718.html

Tectonic Settings:

Total number of sublocalities beneath "Foothill District, Jefferson Co., Colorado, USA": 20
Total number of bottom-level sublocalities: 19

Number of Child Localities: 19
Child Localities:
Church Pit
Denver Fire Clay Company Occurrence
Fire Clay No. 4 Occurrence
Four Corners Mine (Pallaoro Lease; Morrison Mine)
Johnson
Ladwig No. 2
Leyden
Mann Ranch (Vanadium Queen Mine; Mann Mine)
Old Leyden Mine
Rocky Flats Pit
Spicer Clay Mine.
State Clay Mine (Wesley Conda Inc.)
State Highway 74 Roadcut
Unknown Clay - Fire (Refractory; MRDS - 10108134)
Unknown Clay Occurrence (MRDS - 10016659)
Unknown Gypsum - Anhydrite (MRDS - 10263823)
Unknown Stone - Dimension Occurrence (MRDS - 10091136)
US Highway 285 Roadcut
Wilson Clay Mine

Latitude: 39°49'32"N
Longitude: 105°13'36"W
Decimal Degree (lat, lon): 39.825555555556,-105.22666666667

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 Ca Fe H K Mo O S Si U V 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
FluoriteFritzscheiteHalotrichiteKieseriteMarcasiteNoneNot in a structural groupPyriteQuartzZircon

12 IMA Minerals at location:
Alunogen  (*)Carnotite  (*)Coffinite  (*)Halotrichite  (*)Ilsemannite  (*)
Marcasite  (*)Metatyuyamunite  (*)Pyrite  (*)Quartz  (*)Szomolnokite  (*)
Uraninite  (*)Uranophane-α  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Alunogen  (*)Not in a structural groupAl2(SO4)3(H2O)12·5H2O1190653272
Carnotite  (*)NoneK2(UO2)2(VO4)2·3H2O2190642,1906441184
Coffinite  (*)ZirconU(SiO4)·nH2O2190642,190644566
Halotrichite  (*)HalotrichiteFe2+Al2(SO4)4·22H2O1190653409
Ilsemannite  (*)NoneMo3O8·nH2O (?)4190638,190643,190648,190653123
Marcasite  (*)MarcasiteFeS211906445674
Metatyuyamunite  (*)FritzscheiteCa(UO2)2(VO4)2·3H2O1190642129
Pyrite  (*)PyriteFeS23190638,190643,19064439462
Quartz  (*)QuartzSiO2119064261156
Szomolnokite  (*)KieseriteFe(SO4)·H2O1190653139
Uraninite  (*)FluoriteUO23190638,190643,1906442718
Uranophane-α  (*)NoneCa(UO2)2(SiO3OH)2·5H2O1190644890



No ages have been assigned to this locality yet.

SampleSource LocalityReference URL


All locality data graciously provided by mindat.org

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