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:
Brown Derby Mine, Quartz Creek Pegmatite District, Gunnison Co., Colorado, USA

Oldest recorded age at locality: 1490
Youngest recorded age at locality: 1250

mindat Locality ID: 5902
mindat URL: http://www.mindat.org/loc-5902.html

Tectonic Settings:

Total number of sublocalities beneath "Brown Derby Mine, Quartz Creek Pegmatite District, Gunnison Co., Colorado, USA": 5
Total number of bottom-level sublocalities: 5

Number of Child Localities: 5
Child Localities:
Brown Derby No. 1
Brown Derby No. 2
Brown Derby No. 3
Brown Derby No. 4 Mine
Brown Derby No. 5 Mine

Latitude: 38°32'46"N
Longitude: 106°37'40"W
Decimal Degree (lat, lon): 38.546111111111,-106.62777777778
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 B Be Ca Ce Cs F Fe H K Li Mn Na Nb O P Sb Si Sm Ta Th Ti U Y Zn 

Elements from minerals reported directly at this locality: Al F Fe K Li Nb O Si Y 

Structural Groups for minerals in this locality: 
AeschyniteAnalcimeBerylClayColumbiteFeldsparFluoriteGarnetMicaMonazite
NonePyrochloreQuartzScheeliteSpinelTopazTourmaline

25 IMA Minerals at location:
Albite  (*)Almandine  (*)Beryl  (*)Columbite-(Fe)  (*)Columbite-(Mn)  (*)
Elbaite  (*)Euxenite-(Y)  (*)Fergusonite-(Y)  (*)Fluorite  (*)Gahnite  (*)
Magnetite  (*)Microcline  (*)Monazite-(Ce)  (*)Monazite-(Sm)  (*)Muscovite  (*)
Pollucite  (*)Quartz  (*)Rynersonite  (*)Samarskite-(Y)  (*)Schorl  (*)
Spessartine  (*)Stibiconite  (*)Stibiotantalite  (*)Topaz  (*)Trilithionite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Albite  (*)FeldsparNa(AlSi3O8)149012503189849,189850,1898538803
Almandine  (*)GarnetFe2+3Al2(SiO4)31490125011898502353
Beryl  (*)BerylBe3Al2Si6O18149012503189849,189852,1898534286
Columbite-(Fe)  (*)ColumbiteFe2+Nb2O6149012501189849518
Columbite-(Mn)  (*)ColumbiteMn2+Nb2O6149012501189849289
Elbaite  (*)TourmalineNa(Al1.5Li1.5)Al6(Si6O18)(BO3)3(OH)3(OH)149012501189849520
Euxenite-(Y)  (*)ColumbiteY(NbTi)O6149012501189849414
Fergusonite-(Y)  (*)ScheeliteYNbO4149012500196
Fluorite  (*)FluoriteCaF21490125011898499617
Gahnite  (*)SpinelZnAl2O4149012501189849445
Magnetite  (*)SpinelFe2+Fe3+2O414901250014899
Microcline  (*)FeldsparK(AlSi3O8)149012503189849,189852,1898534924
Monazite-(Ce)  (*)MonaziteCe(PO4)149012501189849945
Monazite-(Sm)  (*)MonaziteSm(PO4)1490125011898494
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)2149012503189849,189852,18985317380
Pollucite  (*)AnalcimeCs(Si2Al)O6·nH2O149012501189849140
Quartz  (*)QuartzSiO2149012504189849,189850,189852,18985361156
Rynersonite  (*)AeschyniteCaTa2O614901250118984914
Samarskite-(Y)  (*)ColumbiteYFe3+Nb2O8149012500353
Schorl  (*)TourmalineNaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)149012502189849,1898502705
Spessartine  (*)GarnetMn2+3Al2(SiO4)31490125011898491214
Stibiconite  (*)PyrochloreSb3+Sb5+2O6(OH)149012501189849446
Stibiotantalite  (*)NoneSb3+TaO414901250118984953
Topaz  (*)TopazAl2SiO4F2149012503189849,189852,1898531476
Trilithionite  (*)MicaKLi1.5Al1.5(Si3Al)O10F214901250028


2 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
Alexandra-0309145012501350 ± 100Rb–Sr, K-Ar, U-PbAge of pegmatitelepidolite, monazite, сolumbite, tantalite     5902Brown Derby Mine, Quartz Creek Pegmatite District, Gunnison Co., Colorado, USABrown DerbyAldrich et al. (1956)10.1029/JZ061i002p00215JGR61_215 
Bradley_2012_146149013501420±70Rb/Sr       5902Brown Derby Mine, Quartz Creek Pegmatite District, Gunnison Co., Colorado, USABrown DerbyMcCauley and Bradley (2014)10.3749/canmin.52.2.183CM52_183 

SampleSource LocalityReference URL
R050132Brown Derby Mine, Quartz Creek Pegmatite District, Gunnison Co., Colorado, USAhttps://rruff.info/R050132
R080063Brown Derby Mine, Quartz Creek Pegmatite District, Gunnison Co., Colorado, USAhttps://rruff.info/R080063
R040105Brown Derby Mine, Quartz Creek Pegmatite District, Gunnison Co., Colorado, USAhttps://rruff.info/R040105

All locality data graciously provided by mindat.org

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