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:
Hardscrabble District, Custer Co., Colorado, USA


mindat Locality ID: 268375
mindat URL: http://www.mindat.org/loc-268375.html

Tectonic Settings:

Total number of sublocalities beneath "Hardscrabble District, Custer Co., Colorado, USA": 19
Total number of bottom-level sublocalities: 19

Number of Child Localities: 19
Child Localities:
Amethyst Prospect
Big Stake Nickel Deposit (Big Stake Claim)
Democrat Hill Deposit
Dewey Prospect
Franklin Mine (Frankland Mine; Francklyn Mine)
Gem Park; Goldenite; Silverite Occurrence
Lake View
Marion Mine
Mineral Channel No. 12 (Mineral Channel No. 10 & 12)
Phares & Allen Occurrence
Quist Claim 72 (Voss Mine; Vermiculite King Mine)
Star Et Al Claims (Dehaven; Inman; Timorra)
Unidentified Occurrence (MRDS - 10013037)
Unknown Clay - Bentonite Occurrence (MRDS - 10016865)
Unknown Perlite (MRDS - 10108172)
Unknown Perlite (MRDS - 10263845)
Unnamed Prospect
Victory Claims
Wild Goose Mine

Latitude: 38°6'54"N
Longitude: 105°17'4"W
Decimal Degree (lat, lon): 38.115,-105.28444444444
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 Ba C Ca Cu F Fe H K Mg O Pb S Si Th Ti Zn 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AmphiboleArsenopyriteBaryteBerylBruciteCalciteChalcopyriteClayCopperCorundum
CovelliteHumiteKaoliniteMarcasiteNickelineNoneNot in a structural groupOlivinePyriteQuartz
RocksaltRutileSapphirineSmectite-vermiculiteSphaleriteSpinelWollastoniteZircon

35 IMA Minerals at location:
Alunite  (*)Anthophyllite  (*)Arsenopyrite  (*)Baryte  (*)Bornite  (*)
Brucite  (*)Calcite  (*)Chalcopyrite  (*)Clinohumite  (*)Cordierite  (*)
Corundum  (*)Covellite  (*)Forsterite  (*)Gahnite  (*)Galena  (*)
Gold  (*)Hematite  (*)Ilmenite  (*)Kaolinite  (*)Magnetite  (*)
Marcasite  (*)Pyrite  (*)Pyrrhotite  (*)Quartz  (*)Rutile  (*)
Sapphirine  (*)Siderite  (*)Sillimanite  (*)Silver  (*)Sphalerite  (*)
Spinel  (*)Thorite  (*)Tremolite  (*)Vermiculite  (*)Wollastonite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Alunite  (*)NoneKAl3(SO4)2(OH)61187132966
Anthophyllite  (*)Amphibole   Mg2Mg5Si8O22(OH)23187130,187137,187146718
Arsenopyrite  (*)ArsenopyriteFeAsS11871379052
Baryte  (*)BaryteBa(SO4)118713411547
Bornite  (*)NoneCu5FeS42187134,1871375516
Brucite  (*)BruciteMg(OH)22187130,187137462
Calcite  (*)CalciteCa(CO3)118713427770
Chalcopyrite  (*)ChalcopyriteCuFeS23187130,187137,18714627198
Clinohumite  (*)HumiteMg9(SiO4)4F21187137236
Cordierite  (*)BerylMg2Al4Si5O183187130,187137,1871461008
Corundum  (*)CorundumAl2O32187130,1871371797
Covellite  (*)CovelliteCuS11871464165
Forsterite  (*)OlivineMg2(SiO4)11871371188
Gahnite  (*)SpinelZnAl2O43187130,187137,187146445
Galena  (*)RocksaltPbS4187130,187134,187137,18714624243
Gold  (*)CopperAu118713130554
Hematite  (*)CorundumFe2O3118713414640
Ilmenite  (*)CorundumFe2+Ti4+O311871465433
Kaolinite  (*)Clay KaoliniteAl2Si2O5(OH)411871325591
Magnetite  (*)SpinelFe2+Fe3+2O42187137,18714614899
Marcasite  (*)MarcasiteFeS211871375674
Pyrite  (*)PyriteFeS23187130,187137,18714639462
Pyrrhotite  (*)NickelineFe7S83187130,187137,1871469056
Quartz  (*)QuartzSiO22187132,18713461156
Rutile  (*)RutileTiO22187137,1871465614
Sapphirine  (*)SapphirineMg4(Mg3Al9)O4[Si3Al9O36]3187130,187137,187146129
Siderite  (*)CalciteFe(CO3)11871346417
Sillimanite  (*)Not in a structural groupAl2SiO511871371516
Silver  (*)CopperAg11871315186
Sphalerite  (*)SphaleriteZnS3187130,187137,18714621482
Spinel  (*)SpinelMgAl2O44187130,187133,187137,1871461934
Thorite  (*)ZirconTh(SiO4)3187134,187141,1871421006
Tremolite  (*)Amphibole   Ca2(Mg5.0-4.5Fe2+0.0-0.5)Si8O22(OH)211871372562
Vermiculite  (*)Clay Smectite-vermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4·8H2O3187135,187139,187140652
Wollastonite  (*)WollastoniteCaSiO311871371247


No ages have been assigned to this locality yet.
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All locality data graciously provided by mindat.org

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