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:
Roosevelt Group (Rough Rider), Custer, Custer District, Custer Co., South Dakota, USA

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

mindat Locality ID: 45259
mindat URL: http://www.mindat.org/loc-45259.html

Tectonic Settings:

Total number of sublocalities beneath "Roosevelt Group (Rough Rider), Custer, Custer District, Custer Co., South Dakota, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 43°48'22"N
Longitude: 103°43'56"W
Decimal Degree (lat, lon): 43.806111111111,-103.73222222222
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 Be Bi Ca F Fe H Mn O P S Si Te U 

Elements from minerals reported directly at this locality: Ag Al Au Be Bi Ca F Fe H Mn O P S Si Te U 

Structural Groups for minerals in this locality: 
ApatiteDufréniteMeloniteMeta-autuniteNoneOlivinePhosphosideriteQuartzStrunziteTetradymite

13 IMA Minerals at location:
Bismite  (*)Cacoxenite  (*)Chrysoberyl  (*)Dufrénite  (*)Faheyite  (*)
Fluorapatite  (*)Meta-autunite  (*)Phosphosiderite  (*)Quartz  (*)Strengite  (*)
Strunzite  (*)Sylvanite  (*)Tetradymite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Bismite  (*)NoneBi2O3170217020214
Cacoxenite  (*)NoneFe3+24AlO6(PO4)17(OH)12·75H2O170217020280
Chrysoberyl  (*)OlivineBeAl2O4170217020321
Dufrénite  (*)DufréniteCa0.5Fe2+Fe3+5(PO4)4(OH)6·2H2O170217020139
Faheyite  (*)NoneBe2Mn2+Fe3+2(PO4)4·6H2O1702170203
Fluorapatite  (*)ApatiteCa5(PO4)3F1702170202740
Meta-autunite  (*)Meta-autuniteCa(UO2)2(PO4)2·6H2O170217020388
Phosphosiderite  (*)PhosphosideriteFe3+(PO4)·2H2O170217020182
Quartz  (*)QuartzSiO217021702061156
Strengite  (*)NoneFe3+(PO4)·2H2O170217020263
Strunzite  (*)StrunziteMn2+Fe3+2(PO4)2(OH)2·6H2O17021702098
Sylvanite  (*)MeloniteAgAuTe4170217020337
Tetradymite  (*)TetradymiteBi2Te2S170217020510


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    FaheyiteBe45259Roosevelt 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

All locality data graciously provided by mindat.org

All age data...

Other copyright data...