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:
Front Range, Jefferson Co., Colorado, USA


mindat Locality ID: 257719
mindat URL: http://www.mindat.org/loc-257719.html

Tectonic Settings:

Total number of sublocalities beneath "Front Range, Jefferson Co., Colorado, USA": 26
Total number of bottom-level sublocalities: 26

Number of Child Localities: 26
Child Localities:
Bergen Park Pit
Black Clay Mine
Blackstone Claim
Brown Silica
Fork Prospect
Fred Pierce Ranch (Ramstetter Quarry)
G. H. Buckman Ranch
Glencoe Quarries
Golden Pit
Grosso Prospect
Jackass Occurrence
Johnson No. 2
No. 3 & 4 Refractory Clay Mines
Pallaro Lease (Morrison Mine; Four Corners Mine)
Section 35 T3S R71W Prospect
Section 36 T2S R71W N 1/2 Prospect
Unknown Clay - Fire (Refractory) Occurrence (MRDS - 10016681)
Unknown Clay - Fire (Refractory) Occurrence (MRDS - 10016689)
Unknown Clay - Fire (Refractory) Occurrence (MRDS - 10016915)
Unknown Clay Occurrence (MRDS - 10091191)
Unknown Limestone - General (MRDS - 10108145)
Unknown Limestone - General (MRDS - 10108171)
Unknown Limestone - General Occurrence (MRDS - 10016674)
Unknown Stone - Crushed/Broken (MRDS - 10016687)
Unknown Stone - Crushed/Broken (MRDS - 10166853)
Unknown Stone - Dimension Occurrence (MRDS - 10016677)

Latitude: 39°45'36"N
Longitude: 105°14'17"W
Decimal Degree (lat, lon): 39.76,-105.23805555556

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 H K O Si U V 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
ClayMicaNoneQuartz

3 IMA Minerals at location:
Carnotite  (*)Muscovite  (*)Quartz  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Carnotite  (*)NoneK2(UO2)2(VO4)2·3H2O11906691184
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)2119066217380
Quartz  (*)QuartzSiO22190661,19066261156



No ages have been assigned to this locality yet.

SampleSource LocalityReference URL


All locality data graciously provided by mindat.org

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