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:
Ragged Top District, Lawrence Co., South Dakota, USA

Oldest recorded age at locality: 58
Youngest recorded age at locality: 46

mindat Locality ID: 122058
mindat URL: http://www.mindat.org/loc-122058.html

Tectonic Settings:

Total number of sublocalities beneath "Ragged Top District, Lawrence Co., South Dakota, USA": 17
Total number of bottom-level sublocalities: 16

Number of Child Localities: 16
Child Localities:
American Mining Company
Anchor Mine (Balmoral Group)
Badger Shaft
Balmoral
Black Diamond Mine (Black Diamond Group; Spearfish Gold Mining Company)
Dacy Group MS 1146 (An; Iva; Manota; Humbug No. 1; Humbug No. 2; Flora E; Silver Tongue; Eva H; Goss)
Deadwood Standard Gold Mining And Milling Company
Eagle Bird Mine
Eleventh Hour Group
Eva H And Silver Tongue Mine
Labrador
Metallic Streak M.S.1486
Pottsdam Occurrence
Raum's Drill
Ulster Mine
Victoria Mine

Latitude: 44°22'12"N
Longitude: 103°53'44"W
Decimal Degree (lat, lon): 44.37,-103.89555555556
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 Ca F Fe K Mg Na O Si 

Elements from minerals reported directly at this locality: Ca Fe Mg Na O Si 

Structural Groups for minerals in this locality: 
CopperFeldsparFluoriteGarnetNonePyroxeneQuartzSpinelTridymite

10 IMA Minerals at location:
Aegirine  (*)Andradite  (*)Augite  (*)Fluorite  (*)Gold  (*)
Magnetite  (*)Microcline  (*)Nepheline  (*)Quartz  (*)Silver  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Aegirine  (*)PyroxeneNaFe3+Si2O6584601022
Andradite  (*)GarnetCa3Fe3+2(SiO4)3584601534
Augite  (*)Pyroxene(Ca,Mg,Fe)2Si2O6584602060
Fluorite  (*)FluoriteCaF22265711,2657269617
Gold  (*)CopperAu58468265711,265712,265713,265716,265718,265719,265721,26572730554
Magnetite  (*)SpinelFe2+Fe3+2O45846014899
Microcline  (*)FeldsparK(AlSi3O8)12657134924
Nepheline  (*)TridymiteNa3K(Al4Si4O16)1265713884
Quartz  (*)QuartzSiO2126571361156
Silver  (*)CopperAg58467265711,265712,265716,265718,265719,265721,2657275186


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
NAVDAT-92367584652±6   92367    121697Black Diamond Mine (Black Diamond Group; Spearfish Gold Mining Company), Ragged Top District, Lawrence Co., South Dakota, USA NAVDAT NAVDAT 
NAVDAT-92330584652±6   92330    121728Eagle Bird Mine, Ragged Top District, Lawrence Co., South Dakota, USA NAVDAT NAVDAT 

SampleSource LocalityReference URL

All locality data graciously provided by mindat.org

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