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:
Lucky Boy Claim, Maybell District, Moffat Co., Colorado, USA

Oldest recorded age at locality: 23.03
Youngest recorded age at locality: 5.3

mindat Locality ID: 116253
mindat URL: http://www.mindat.org/loc-116253.html

Tectonic Settings:

Total number of sublocalities beneath "Lucky Boy Claim, Maybell District, Moffat Co., Colorado, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 40°33'26"N
Longitude: 108°7'25"W
Decimal Degree (lat, lon): 40.557222222222,-108.12361111111

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: Ca F O P 

Elements from minerals reported directly at this locality: Ca F O P 

Structural Groups for minerals in this locality: 
ApatiteNone

1 IMA Minerals at location:
Fluorapatite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Fluorapatite  (*)ApatiteCa5(PO4)3F23.035.302740



Locality Notes from all Ages at Locality:
Age IDLocality Notes
Giersdorf_00000809Economic ore deposits of the Maybell area are found in the uppermost sandstone unit of the Browns Park Formation. The uranium ore deposits are described as tabular, amoeba-shaped lenses of discontinuous bodies within limited stratigraphic intervals.


1 Ages assigned to this locality:

Excel IDMax Age (Ma)Min Age (Ma)Age as listed in referenceDating MethodAge InterpretPrioritized?Sample SourceSample NumRun NumAge from other LocalityDated MineralMinerals explicitely stated as having this ageAge applies to these ElementsMinDat Locality IDDated Locality (Max Age)Location as listed in referenceReferenceReference DOIReference IDAge Notes
Giersdorf_0000080923.035.323.03-5.3 The Browns Park formation is dated to be Miocene in age and is applied to the uranium mineralization within it.   YesAutunite, Becquerelite, Carnotite, Coffinite, Liebigite, Schoepite, Torbernite, Tyuyamunite, Uraninite, ZeuneriteU133365Maybell District, Moffat Co., Colorado, USAMaybell Mining DistrictChenoweth (1986) NINCG_289In the Maybell area, the Browns Park formation unconformably overlies truncated rocks ranging In age from Precambrian to Eocene, on the north flank of the Axial Basin anticline. The Browns Park formation is dated to be Miocene in age.


SampleSource LocalityReference URL


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