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:
Grape Creek District (Greenhorn District), Fremont Co., Colorado, USA


mindat Locality ID: 49887
mindat URL: http://www.mindat.org/loc-49887.html

Tectonic Settings:

Total number of sublocalities beneath "Grape Creek District (Greenhorn District), Fremont Co., Colorado, USA": 23
Total number of bottom-level sublocalities: 21

Number of Child Localities: 21
Child Localities:
Adamic Cow Camp Workings Occurrence (Apollo Claim; Apollo No. 1 Claim 1977)
Columbine Mine
Copper Gulch Area
Copper King Mine (Copper King Claims Patented; Unpatented Claims: Sam 1-15 1977 Part; Dawson Mtn Workings)
Cunac Occurrence
Dawson Mountain
Dawson Mountain - Surprise Group (Unpatented Claims: Sam 1-15 1977 Part; Copper Boy 1902)
Deer Ridge Claim
El Plomo Mine
Good News No. 1 Property (Goat Park; Good News Complex)
Good News No. 2 Claims (Goat Park)
Grape Creek Area (Wagner-Grape Creek Lode; See: Hellgate Claims; Bear Claims Old Conac Property)
Green Mountain Mine (Copper Boy Mine)
Horse Shoe & El Ploma
Horseshoe Mine (School Section Deposit)
Joker Mine (Rocky Mountain Boy Claims Patented Claims)
Tanner Boy Group (Red Hills Group)
Unidentified Occurrence (MRDS - 10087767)
Unidentified Occurrence (MRDS - 10087768)
Unidentified Uranium Mine (MRDS - 10087776)
Unknown Clay Occurrence (MRDS - 10018626)

Latitude: 38°23'1"N
Longitude: 105°20'21"W
Decimal Degree (lat, lon): 38.383611111111,-105.33916666667

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 Au B Ba Bi C Ca Cu Fe H K Mg Mo Na O Pb S Si Th Ti U V Zn 

Elements from minerals reported directly at this locality: Bi S 

Structural Groups for minerals in this locality: 
AllophaneAmphiboleBaryteBerylCalciteChalcopyriteClayClinozoisiteCopperCorundum
CovelliteEpidoteFluoriteKaoliniteMalachiteMolybdeniteNickelineNoneNot in a structural groupPyrite
QuartzRocksaltRutileSphaleriteSpinelStibniteTourmalineZircon

34 IMA Minerals at location:
Actinolite  (*)Anthophyllite  (*)Baryte  (*)Bismuthinite  (*)Bornite  (*)
Calcite  (*)Carnotite  (*)Chalcopyrite  (*)Chrysocolla  (*)Cordierite  (*)
Covellite  (*)Cuprite  (*)Epidote  (*)Gahnite  (*)Galena  (*)
Gold  (*)Hematite  (*)Hercynite  (*)Hydrozincite  (*)Ilmenite  (*)
Kaolinite  (*)Magnetite  (*)Malachite  (*)Molybdenite  (*)Pyrite  (*)
Pyrrhotite  (*)Quartz  (*)Rutile  (*)Schorl  (*)Sillimanite  (*)
Silver  (*)Sphalerite  (*)Thorite  (*)Uraninite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Actinolite  (*)Amphibole   Ca2(Mg4.5-2.5Fe2+0.5-2.5)Si8O22(OH)22188428,1884293419
Anthophyllite  (*)Amphibole   Mg2Mg5Si8O22(OH)21188426718
Baryte  (*)BaryteBa(SO4)118842511547
Bismuthinite  (*)StibniteBi2S301935
Bornite  (*)NoneCu5FeS42188413,1884155516
Calcite  (*)CalciteCa(CO3)2188425,18842927770
Carnotite  (*)NoneK2(UO2)2(VO4)2·3H2O11884211184
Chalcopyrite  (*)ChalcopyriteCuFeS26188413,188415,188425,188426,188428,18842927198
Chrysocolla  (*)Allophane(Cu2-xAlx)H2-xSi2O5(OH)4·nH2O11884263531
Cordierite  (*)BerylMg2Al4Si5O1811884261008
Covellite  (*)CovelliteCuS11884264165
Cuprite  (*)Not in a structural groupCu2O11884262970
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)11884298173
Gahnite  (*)SpinelZnAl2O43188419,188426,188428445
Galena  (*)RocksaltPbS3188413,188425,18842824243
Gold  (*)CopperAu5188416,188420,188425,188426,18842830554
Hematite  (*)CorundumFe2O3118842614640
Hercynite  (*)SpinelFe2+Al2O41188426407
Hydrozincite  (*)NoneZn5(CO3)2(OH)611884261066
Ilmenite  (*)CorundumFe2+Ti4+O311884265433
Kaolinite  (*)Clay KaoliniteAl2Si2O5(OH)411884215591
Magnetite  (*)SpinelFe2+Fe3+2O42188420,18842614899
Malachite  (*)MalachiteCu2(CO3)(OH)26188415,188416,188420,188424,188426,18842812537
Molybdenite  (*)MolybdeniteMoS22188415,1884265800
Pyrite  (*)PyriteFeS24188413,188426,188428,18842939462
Pyrrhotite  (*)NickelineFe7S811884269056
Quartz  (*)QuartzSiO27188415,188416,188420,188423,188424,188426,18842961156
Rutile  (*)RutileTiO211884265614
Schorl  (*)TourmalineNaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)11884262705
Sillimanite  (*)Not in a structural groupAl2SiO511884261516
Silver  (*)CopperAg8188415,188416,188420,188423,188424,188425,188426,1884285186
Sphalerite  (*)SphaleriteZnS3188413,188425,18842621482
Thorite  (*)ZirconTh(SiO4)11884251006
Uraninite  (*)FluoriteUO211884282718



No ages have been assigned to this locality yet.

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