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:
Clark Co., Missouri, USA

Oldest recorded age at locality: 1521.74
Youngest recorded age at locality: 1069.07

mindat Locality ID: 44074
mindat URL: http://www.mindat.org/loc-44074.html

Tectonic Settings:

Total number of sublocalities beneath "Clark Co., Missouri, USA": 7
Total number of bottom-level sublocalities: 7

Number of Child Localities: 7
Child Localities:
Fox River
James Skeens Farm
Keokuk Formation
Sheffler's Rock Shop And Geode Mine
St. Francisville
Warsaw Geodes
Wayland

Latitude: 40°24'40"N
Longitude: 91°35'36"W
Decimal Degree (lat, lon): 40.411111111111,-91.593333333333

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 Ba C Ca Cu F Fe H K Mg Mn Ni O Pb S Si Zn 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AluniteAragoniteBaryteCalciteChalcopyriteClayCorundumDiasporeFluoriteGypsum
HydrotalciteKaoliniteMalachiteMarcasiteMilleriteNonePyriteQuartzRocksaltRutile
SphaleriteWoodwardite

22 IMA Minerals at location:
Aragonite  (*)Baryte  (*)Calcite  (*)Chalcopyrite  (*)Dolomite  (*)
Fluorite  (*)Galena  (*)Goethite  (*)Gypsum  (*)Hematite  (*)
Honessite  (*)Jarosite  (*)Kaolinite  (*)Malachite  (*)Marcasite  (*)
Millerite  (*)Pyrite  (*)Pyrolusite  (*)Quartz  (*)Siderite  (*)
Smithsonite  (*)Sphalerite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Aragonite  (*)AragoniteCa(CO3)1521.741069.073225033,225035,2250363250
Baryte  (*)BaryteBa(SO4)1521.741069.074225033,225034,225035,22503611547
Calcite  (*)CalciteCa(CO3)1521.741069.075225031,225033,225034,225035,22503627770
Chalcopyrite  (*)ChalcopyriteCuFeS21521.741069.073225033,225035,22503627198
Dolomite  (*)NoneCaMg(CO3)21521.741069.074225033,225034,225035,2250369895
Fluorite  (*)FluoriteCaF21521.741069.0712250359617
Galena  (*)RocksaltPbS122503224243
Goethite  (*)DiasporeFeO(OH)1521.741069.073225033,225035,2250367437
Gypsum  (*)GypsumCa(SO4)·2H2O1521.741069.073225033,225035,2250366890
Hematite  (*)CorundumFe2O31521.741069.073225033,225035,22503614640
Honessite  (*)Woodwardite Hydrotalcite(Ni1-xFe3+x)(SO4)x/2(OH)2·nH2O (x < 0.5, n < 3x/2)1521.741069.072225033,22503525
Jarosite  (*)AluniteKFe3+3(SO4)2(OH)62225033,2250362228
Kaolinite  (*)Clay KaoliniteAl2Si2O5(OH)41521.741069.074225033,225034,225035,2250365591
Malachite  (*)MalachiteCu2(CO3)(OH)21521.741069.073225033,225035,22503612537
Marcasite  (*)MarcasiteFeS21521.741069.074225033,225034,225035,2250365674
Millerite  (*)MilleriteNiS1521.741069.072225033,2250351066
Pyrite  (*)PyriteFeS21521.741069.076225032,225033,225034,225035,225036,22503739462
Pyrolusite  (*)RutileMnO21521.741069.073225033,225035,2250363106
Quartz  (*)QuartzSiO21521.741069.076225031,225032,225033,225034,225035,22503661156
Siderite  (*)CalciteFe(CO3)1521.741069.073225033,225035,2250366417
Smithsonite  (*)CalciteZn(CO3)1521.741069.073225033,225035,2250362473
Sphalerite  (*)SphaleriteZnS1521.741069.073225033,225035,22503621482



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
USGS-Rb-Sr-002601521.741521.741521.74Rb-Srminimum age of intrusionbiotite     25512St. Francisville, Clark Co., Missouri, USA USGS-Rb-Sr USGS-Rb-Sr 
USGS-Rb-Sr-002611229.071069.071149.07±80Rb-Srage of intrusionk-feldspar     25512St. Francisville, Clark Co., Missouri, USA USGS-Rb-Sr USGS-Rb-Sr 


SampleSource LocalityReference URL


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