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

Important Update News

The RRUFF Project has been migrated to RRUFF.net. Please update your bookmarks immediately, if you have not done so.

The data on this website is already three years out of date, and the entire website will be taken offline before the end of the year.

We are grateful to NASA for the funding of this effort.




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:
Gold Hill, Gold Hill District, Boulder Co., Colorado, USA


mindat Locality ID: 41934
mindat URL: http://www.mindat.org/loc-41934.html

Tectonic Settings:

Total number of sublocalities beneath "Gold Hill, Gold Hill District, Boulder Co., Colorado, USA": 4
Total number of bottom-level sublocalities: 4

Number of Child Localities: 4
Child Localities:
Cash Mine
Copper King Mine (Yeager's Mine)
Little Johnny Mine (Emancipation Group; Home Sweet Home Occurrence)
Nancy Wood Mine (Sugar Loaf; Forest; Pittsburg; Gray Copper)

Latitude: 40°3'18"N
Longitude: 105°25'10"W
Decimal Degree (lat, lon): 40.055,-105.41944444444
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: Ag Al As Au C Ca Co Cu Fe H Hg K Ni O Pb S Sb Si Te W Zn 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AllophaneArsenopyriteCalciteChalcopyriteClayCobaltiteCopperCorundumCovelliteEpsomite
LillianiteMalachiteMarcasiteMeloniteMicaMilleriteNickelineNonePentlanditePyrite
QuartzRocksaltScheeliteSphaleriteSpinelTetradymite

38 IMA Minerals at location:
Altaite  (*)Arsenopyrite  (*)Bornite  (*)Calaverite  (*)Calcite  (*)
Chalcopyrite  (*)Chrysocolla  (*)Cobaltite  (*)Coloradoite  (*)Covellite  (*)
Fizélyite  (*)Galena  (*)Gold  (*)Hematite  (*)Hessite  (*)
Malachite  (*)Marcasite  (*)Melonite  (*)Mercury  (*)Millerite  (*)
Morenosite  (*)Muscovite  (*)Nagyágite  (*)Nickeline  (*)Pentlandite  (*)
Petzite  (*)Polydymite  (*)Pyrite  (*)Pyrrhotite  (*)Quartz  (*)
Scheelite  (*)Sphalerite  (*)Stützite  (*)Sylvanite  (*)Tellurantimony  (*)
Tellurite  (*)Tellurium  (*)Violarite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Altaite  (*)RocksaltPbTe1184628489
Arsenopyrite  (*)ArsenopyriteFeAsS11846279052
Bornite  (*)NoneCu5FeS411846285516
Calaverite  (*)MeloniteAuTe21184628361
Calcite  (*)CalciteCa(CO3)118462827770
Chalcopyrite  (*)ChalcopyriteCuFeS22184627,18462827198
Chrysocolla  (*)Allophane(Cu2-xAlx)H2-xSi2O5(OH)4·nH2O11846273531
Cobaltite  (*)CobaltiteCoAsS1184627966
Coloradoite  (*)SphaleriteHgTe1184629169
Covellite  (*)CovelliteCuS2184626,1846284165
Fizélyite  (*)LillianiteAg5Pb14Sb21S48118462854
Galena  (*)RocksaltPbS118462624243
Gold  (*)CopperAu3184626,184628,18462930554
Hematite  (*)CorundumFe2O3118462714640
Hessite  (*)NoneAg2Te2184626,184629804
Malachite  (*)MalachiteCu2(CO3)(OH)2118462712537
Marcasite  (*)MarcasiteFeS211846295674
Melonite  (*)MeloniteNiTe22184626,184628207
Mercury  (*)NoneHg1184627397
Millerite  (*)MilleriteNiS11846271066
Morenosite  (*)EpsomiteNi(SO4)·7H2O118462784
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)2118462617380
Nagyágite  (*)None[Pb3(Pb,Sb)3S6](Au,Te)33184626,184628,18462967
Nickeline  (*)NickelineNiAs1184627633
Pentlandite  (*)Pentlandite(Ni,Fe)9S811846271512
Petzite  (*)NoneAg3AuTe23184626,184628,184629409
Polydymite  (*)SpinelNi2+Ni3+2S41184627131
Pyrite  (*)PyriteFeS24184626,184627,184628,18462939462
Pyrrhotite  (*)NickelineFe7S811846279056
Quartz  (*)QuartzSiO23184626,184627,18462861156
Scheelite  (*)ScheeliteCa(WO4)11846264894
Sphalerite  (*)SphaleriteZnS2184626,18462721482
Stützite  (*)NoneAg5-xTe3 (x = 0.24-0.36)118462692
Sylvanite  (*)MeloniteAgAuTe41184626337
Tellurantimony  (*)TetradymiteSb2Te3118462829
Tellurite  (*)NoneTeO2118462652
Tellurium  (*)NoneTe1184628190
Violarite  (*)SpinelFeNi2S41184627380


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

All locality data graciously provided by mindat.org

All age data...

Other copyright data...