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:
Cicero Peak, Pringle, Custer District, Custer Co., South Dakota, USA

Oldest recorded age at locality: 1702
Youngest recorded age at locality: 1702

mindat Locality ID: 32021
mindat URL: http://www.mindat.org/loc-32021.html

Tectonic Settings:

Total number of sublocalities beneath "Cicero Peak, Pringle, Custer District, Custer Co., South Dakota, USA": 2
Total number of bottom-level sublocalities: 2

Number of Child Localities: 2
Child Localities:
Star Claim (Star And Blue Bonnet Claims Mine)
White Elephant Mine

Latitude: 43°42'3"N
Longitude: 103°33'11"W
Decimal Degree (lat, lon): 43.700833333333,-103.55305555556
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 As B Ba Be Ca F Fe H K Li Mg Mn Na O P S Si Sr U 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
ApatiteArseniosideriteArsenoliteArsenopyriteArthuriteAutuniteBerauniteBerylCalcioferriteCerite
ClayFairfielditeFeldsparGarnetHureauliteLöllingiteLaueiteLeucophosphiteMicaNone
OlivinePharmacosideritePhosphosideriteQuartzRockbridgeiteStewartiteStrunziteSymplesiteTourmalineTridymite
VivianiteWalentaite

42 IMA Minerals at location:
Albite  (*)Arsenolite  (*)Arsenopyrite  (*)Autunite  (*)Beraunite  (*)
Bermanite  (*)Beryl  (*)Collinsite  (*)Fluorapatite  (*)Heterosite  (*)
Hureaulite  (*)Hydroxylapatite  (*)Laueite  (*)Leucophosphite  (*)Löllingite  (*)
Messelite  (*)Microcline  (*)Mitridatite  (*)Montgomeryite  (*)Muscovite  (*)
Parasymplesite  (*)Pharmacosiderite  (*)Phosphosiderite  (*)Quartz  (*)Robertsite  (*)
Rockbridgeite  (*)Schneiderhöhnite  (*)Schorl  (*)Scorodite  (*)Sicklerite  (*)
Spessartine  (*)Stewartite  (*)Strunzite  (*)Symplesite  (*)Tavorite  (*)
Tinsleyite  (*)Todorokite  (*)Tridymite  (*)Triphylite  (*)Walentaite  (*)
Whitlockite  (*)Xanthoxenite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Albite  (*)FeldsparNa(AlSi3O8)1702170212649278803
Arsenolite  (*)ArsenoliteAs2O3170217021264927231
Arsenopyrite  (*)ArsenopyriteFeAsS1702170212649279052
Autunite  (*)AutuniteCa(UO2)2(PO4)2·10-12H2O1702170212649271272
Beraunite  (*)BerauniteFe3+6(PO4)4O(OH)4·6H2O170217021264927136
Bermanite  (*)ArthuriteMn2+Mn3+2(PO4)2(OH)2·4H2O17021702126492755
Beryl  (*)BerylBe3Al2Si6O181702170212649274286
Collinsite  (*)FairfielditeCa2Mg(PO4)2·2H2O17021702126492738
Fluorapatite  (*)ApatiteCa5(PO4)3F1702170212649272740
Heterosite  (*)OlivineFe3+(PO4)170217021264927204
Hureaulite  (*)HureauliteMn2+5(PO3OH)2(PO4)2·4H2O170217021264927125
Hydroxylapatite  (*)ApatiteCa5(PO4)3OH170217021264927367
Laueite  (*)LaueiteMn2+Fe3+2(PO4)2(OH)2·8H2O17021702126492770
Leucophosphite  (*)LeucophosphiteKFe3+2(PO4)2(OH)·2H2O170217021264927110
Löllingite  (*)LöllingiteFeAs2170217021264927762
Messelite  (*)FairfielditeCa2Fe2+(PO4)2·2H2O17021702126492743
Microcline  (*)FeldsparK(AlSi3O8)1702170212649274924
Mitridatite  (*)ArseniosideriteCa2Fe3+3O2(PO4)3·3H2O170217021264927129
Montgomeryite  (*)CalcioferriteCa4MgAl4(PO4)6(OH)4·12H2O17021702126492744
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)217021702126492717380
Parasymplesite  (*)VivianiteFe2+3(AsO4)2·8H2O170217021264927124
Pharmacosiderite  (*)PharmacosideriteKFe3+4(AsO4)3(OH)4·6-7H2O170217021264927428
Phosphosiderite  (*)PhosphosideriteFe3+(PO4)·2H2O170217021264927182
Quartz  (*)QuartzSiO217021702126492761156
Robertsite  (*)ArseniosideriteCa2Mn3+3O2(PO4)3·3H2O17021702126492736
Rockbridgeite  (*)Rockbridgeite(Fe2+0.5Fe3+0.5)2Fe3+3(PO4)3(OH)5170217021264927206
Schneiderhöhnite  (*)NoneFe2+Fe3+3As3+5O1317021702126492715
Schorl  (*)TourmalineNaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)1702170212649272705
Scorodite  (*)NoneFe3+(AsO4)·2H2O1702170212649271153
Sicklerite  (*)OlivineLiMn2+(PO4)17021702126492766
Spessartine  (*)GarnetMn2+3Al2(SiO4)31702170212649261214
Stewartite  (*)StewartiteMn2+Fe3+2(PO4)2(OH)2·8H2O17021702126492748
Strunzite  (*)StrunziteMn2+Fe3+2(PO4)2(OH)2·6H2O17021702126492798
Symplesite  (*)SymplesiteFe2+3(AsO4)2·8H2O17021702126492792
Tavorite  (*)NoneLiFe3+(PO4)(OH)17021702126492735
Tinsleyite  (*)LeucophosphiteKAl2(PO4)2(OH)·2H2O1702170212649279
Todorokite  (*)None(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12·3-4H2O170217021264927433
Tridymite  (*)TridymiteSiO2170217021264927458
Triphylite  (*)OlivineLiFe2+(PO4)170217021264927313
Walentaite  (*)Walentaite[Mn(H2O)6][   As3+3Fe3+3(PO4)2O7]1702170212649276
Whitlockite  (*)CeriteCa9Mg(PO3OH)(PO4)6170217021264927104
Xanthoxenite  (*)NoneCa4Fe3+2(PO4)4(OH)2·3H2O17021702126492729


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
Be-00046170217021702  high   YesFaheyiteBe45259Roosevelt Group (Rough Rider), Custer, Custer District, Custer Co., South Dakota, USA Dahl and Foland (2008)10.2138/am.2008.2633AM93_1215 
Be-00023170217021702  high   YesEhrleite, Fransoletite, Greifensteinite, Pahasapaite, Parafransoletite, Roscherite, TiptopiteBe4122Tip Top Mine (Tip Top Pegmatite), Fourmile, Custer District, Custer Co., South Dakota, USA Dahl and Foland (2008)10.2138/am.2008.2633AM93_1215 

SampleSource LocalityReference URL
R050165White Elephant Mine, Cicero Peak, Pringle, Custer District, Custer Co., South Dakota, USAhttps://rruff.info/R050165

All locality data graciously provided by mindat.org

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