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:
Mena Mine (Hoffmeister Homestead Prospect; Black Judge Shaft; Nigger Shaft), Ralston Buttes District, Jefferson Co., Colorado, USA


mindat Locality ID: 114732
mindat URL: http://www.mindat.org/loc-114732.html

Tectonic Settings:

Total number of sublocalities beneath "Mena Mine (Hoffmeister Homestead Prospect; Black Judge Shaft; Nigger Shaft), Ralston Buttes District, Jefferson Co., Colorado, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 39°51'10"N
Longitude: 105°18'7"W
Decimal Degree (lat, lon): 39.852777777778,-105.30194444444
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 Bi C Ca Co Cu Fe K Mo Ni O Pb S Sb Si U Zn 

Elements from minerals reported directly at this locality: Ag Al As Au Bi C Ca Co Cu Fe K Mg Mo Ni O Pb S Sb Si U Zn 

Structural Groups for minerals in this locality: 
ArsenicArsenopyriteCalciteChalcopyriteCopperCorundumCovelliteDigeniteFeldsparFluorite
LöllingiteMarcasiteMolybdeniteNickelineNonePyriteQuartzRocksaltSphaleriteSpinel
StibniteTetrahedrite

29 IMA Minerals at location:
Ankerite  (*)Bismuth  (*)Bismuthinite  (*)Bornite  (*)Calcite  (*)
Chalcocite  (*)Chalcopyrite  (*)Covellite  (*)Digenite  (*)Galena  (*)
Glaucodot  (*)Gold  (*)Hematite  (*)Magnetite  (*)Marcasite  (*)
Maucherite  (*)Molybdenite  (*)Nickeline  (*)Orthoclase  (*)Pararammelsbergite  (*)
Pyrite  (*)Pyrrhotite  (*)Quartz  (*)Rammelsbergite  (*)Silver  (*)
Sphalerite  (*)Stromeyerite  (*)Tetrahedrite-(Zn)  (*)Uraninite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Ankerite  (*)NoneCa(Fe2+,Mg)(CO3)203092
Bismuth  (*)ArsenicBi01966
Bismuthinite  (*)StibniteBi2S301935
Bornite  (*)NoneCu5FeS405516
Calcite  (*)CalciteCa(CO3)027770
Chalcocite  (*)NoneCu2S05707
Chalcopyrite  (*)ChalcopyriteCuFeS2027198
Covellite  (*)CovelliteCuS04165
Digenite  (*)DigeniteCu1.8S01027
Galena  (*)RocksaltPbS024243
Glaucodot  (*)Arsenopyrite(Co0.5Fe0.5)AsS0131
Gold  (*)CopperAu030554
Hematite  (*)CorundumFe2O3014640
Magnetite  (*)SpinelFe2+Fe3+2O4014899
Marcasite  (*)MarcasiteFeS205674
Maucherite  (*)NoneNi11As80161
Molybdenite  (*)MolybdeniteMoS205800
Nickeline  (*)NickelineNiAs0633
Orthoclase  (*)FeldsparK(AlSi3O8)02349
Pararammelsbergite  (*)LöllingiteNiAs2052
Pyrite  (*)PyriteFeS2039462
Pyrrhotite  (*)NickelineFe7S809056
Quartz  (*)QuartzSiO2061156
Rammelsbergite  (*)LöllingiteNiAs20233
Silver  (*)CopperAg05186
Sphalerite  (*)SphaleriteZnS021482
Stromeyerite  (*)NoneCuAgS0332
Tetrahedrite-(Zn)  (*)TetrahedriteCu6(Cu4Zn2)Sb4S1305317
Uraninite  (*)FluoriteUO202718


No ages have been assigned to this locality yet.

All locality data graciously provided by mindat.org

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