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:
South Terras Mine (Resugga & Tolgarrick Mine; Union Mine; Uranium Mine), St Stephen-in-Brannel, Cornwall, England, UK

Oldest recorded age at locality: 811
Youngest recorded age at locality: 11

mindat Locality ID: 1327
mindat URL: http://www.mindat.org/loc-1327.html

Tectonic Settings:

Total number of sublocalities beneath "South Terras Mine (Resugga & Tolgarrick Mine; Union Mine; Uranium Mine), St Stephen-in-Brannel, Cornwall, England, UK": 0
Total number of bottom-level sublocalities: 0

Latitude: 50°20'3"N
Longitude: 4°54'6"W
Decimal Degree (lat, lon): 50.334166666667,-4.9016666666667
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 Bi C Ca Cl Co Cu F Fe H K Mg Mn Na Ni O P Pb S Si Sn U V Zn 

Elements from minerals reported directly at this locality: Al As B Ba Be Bi C Ca Cl Co Cu F Fe H K Mg Mn Na Ni O P Pb S Si Sn U V Zn 

Structural Groups for minerals in this locality: 
AluniteAmorphousAmphiboleAndalusiteArsenopyriteAutuniteBaryteBrochantiteCalciteChalcophyllite
ChalcopyriteChloriteClayCopperCoronaditeCorundumFluoriteFritzscheiteGarnetKaňkite
MarcasiteMixiteNatroautuniteNoneNot in a structural groupPerovskitePharmacosideritePyriteQuartzRocksalt
RutileSkutteruditeSphaleriteSpinelStibniteTourmalineVivianiteZippeiteZircon

55 IMA Minerals at location:
Actinolite  (*)Akaganeite  (*)Andradite  (*)Anglesite  (*)Annabergite  (*)
Arsenopyrite  (*)Asbolane  (*)Autunite  (*)Bassetite  (*)Bertrandite  (*)
Bismuthinite  (*)Bornite  (*)Brochantite  (*)Cassiterite  (*)Chalcocite  (*)
Chalcophyllite  (*)Chalcopyrite  (*)Clinochlore  (*)Coffinite  (*)Copper  (*)
Cuprite  (*)Erythrite  (*)Fluorite  (*)Francevillite  (*)Galena  (*)
Hematite  (*)Jarosite  (*)Kaňkite  (*)Kasolite  (*)Magnetite  (*)
Marcasite  (*)Metasaléeite  (*)Metatorbernite  (*)Metavanuralite  (*)Metazeunerite  (*)
Mixite  (*)Olivenite  (*)Opal  (*)Parsonsite  (*)Pharmacosiderite  (*)
Pyrite  (*)Quartz  (*)Rutherfordine  (*)Saléeite  (*)Schorl  (*)
Scorodite  (*)Siderite  (*)Skutterudite  (*)Sphalerite  (*)Torbernite  (*)
Trögerite  (*)Uraninite  (*)Wittichenite  (*)Zeunerite  (*)Zippeite  (*)
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)28111103419
Akaganeite  (*)Coronadite(Fe3+,Ni2+)8(OH,O)16Cl1.25·nH2O81111063
Andradite  (*)GarnetCa3Fe3+2(SiO4)38111101534
Anglesite  (*)BarytePb(SO4)8111102734
Annabergite  (*)VivianiteNi3(AsO4)2·8H2O811110445
Arsenopyrite  (*)ArsenopyriteFeAsS8111109052
Asbolane  (*)Not in a structural groupMn4+(O,OH)2·(Co,Ni,Mg,Ca)x(OH)2x·nH2O811110143
Autunite  (*)AutuniteCa(UO2)2(PO4)2·10-12H2O8111101272
Bassetite  (*)NoneFe2+(UO2)2(PO4)2(H2O)1081111051
Bertrandite  (*)Not in a structural groupBe4Si2O7(OH)2811110606
Bismuthinite  (*)StibniteBi2S38111101935
Bornite  (*)NoneCu5FeS48111105516
Brochantite  (*)BrochantiteCu4(SO4)(OH)68111101633
Cassiterite  (*)RutileSnO28111105171
Chalcocite  (*)NoneCu2S8111105707
Chalcophyllite  (*)ChalcophylliteCu18Al2(AsO4)4(SO4)3(OH)24·36H2O811110194
Chalcopyrite  (*)ChalcopyriteCuFeS281111027198
Clinochlore  (*)Chlorite ClayMg5Al(AlSi3O10)(OH)88111101756
Coffinite  (*)ZirconU(SiO4)·nH2O811110566
Copper  (*)CopperCu8111103846
Cuprite  (*)Not in a structural groupCu2O8111102970
Erythrite  (*)VivianiteCo3(AsO4)2·8H2O811110814
Fluorite  (*)FluoriteCaF28111109617
Francevillite  (*)FritzscheiteBa(UO2)2(VO4)2·5H2O81111043
Galena  (*)RocksaltPbS8080024243
Hematite  (*)CorundumFe2O381111014640
Jarosite  (*)AluniteKFe3+3(SO4)2(OH)68111102228
Kaňkite  (*)KaňkiteFe3+(AsO4)·3.5H2O81111038
Kasolite  (*)NonePb(UO2)(SiO4)·H2O811110198
Magnetite  (*)SpinelFe2+Fe3+2O481111014899
Marcasite  (*)MarcasiteFeS28111105674
Metasaléeite  (*)NoneMg(UO2)2(PO4)2·8H2O81111011
Metatorbernite  (*)NoneCu(UO2)2(PO4)2·8H2O811110443
Metavanuralite  (*)NoneAl(UO2)2(VO4)2(OH)·8H2O8111104
Metazeunerite  (*)NoneCu(UO2)2(AsO4)2·8H2O811110182
Mixite  (*)MixiteCu6Bi(AsO4)3(OH)6·3H2O811110168
Olivenite  (*)AndalusiteCu2(AsO4)(OH)811110492
Opal  (*)AmorphousSiO2·nH2O8111102994
Parsonsite  (*)NonePb2(UO2)(PO4)281111063
Pharmacosiderite  (*)PharmacosideriteKFe3+4(AsO4)3(OH)4·6-7H2O811110428
Pyrite  (*)PyriteFeS281111039462
Quartz  (*)QuartzSiO281111061156
Rutherfordine  (*)None(UO2)(CO3)81111058
Saléeite  (*)NoneMg(UO2)2(PO4)2(H2O)1081111095
Schorl  (*)TourmalineNaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)8111102705
Scorodite  (*)NoneFe3+(AsO4)·2H2O8111101153
Siderite  (*)CalciteFe(CO3)8111106417
Skutterudite  (*)Skutterudite PerovskiteCoAs3811110531
Sphalerite  (*)SphaleriteZnS81111021482
Torbernite  (*)NoneCu(UO2)2(PO4)2·12H2O8111101059
Trögerite  (*)Natroautunite(H3O)(UO2)(AsO4)·3H2O81111022
Uraninite  (*)FluoriteUO28111102718
Wittichenite  (*)NoneCu3BiS3811110297
Zeunerite  (*)AutuniteCu(UO2)2(AsO4)2·12H2O811110185
Zippeite  (*)ZippeiteK2[(UO2)4(SO4)2O2(OH)2](H2O)4811110175


7 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
Lucy_236494547 ± 2206 Pb/238UAge of Pitchblende      1327South Terras Mine (Resugga & Tolgarrick Mine; Union Mine; Uranium Mine), St Stephen-in-Brannel, Cornwall, England, UKSouth TerrasDarnley et al. (1965) MM34_159 
Lucy_25281111411 ± 400207Pb/206PbIsotopic Age of Pitchblende-Coffinite NCL1103    1327South Terras Mine (Resugga & Tolgarrick Mine; Union Mine; Uranium Mine), St Stephen-in-Brannel, Cornwall, England, UKSouth TerrasDarnley et al. (1965) MM34_159(Ages taken from table with unclear titles) Chemical analysis of Pb. Analysis of 204Pb.
Lucy_253494547 ± 2206Pb/238UIsotopic Age of Pitchblende-Coffinite NCL1103    1327South Terras Mine (Resugga & Tolgarrick Mine; Union Mine; Uranium Mine), St Stephen-in-Brannel, Cornwall, England, UKSouth TerrasDarnley et al. (1965) MM34_159(Ages taken from table with unclear titles) Chemical analysis of U. Analysis of 206Pb.
Lucy_254644655 ± 9207Pb/235UIsotopic Age of Pitchblende-Coffinite NCL1103    1327South Terras Mine (Resugga & Tolgarrick Mine; Union Mine; Uranium Mine), St Stephen-in-Brannel, Cornwall, England, UKSouth TerrasDarnley et al. (1965) MM34_159(Ages taken from table with unclear titles) Chemical analysis of U. Analysis of 207Pb.
Lucy_260230220225 ± 5206Pb/238UUsing Pockleys Interpretations, it is acceptable to say that South Terras, Geevor, and Wheal Owles are not reliable indications of Tertiary mineralization.      1327South Terras Mine (Resugga & Tolgarrick Mine; Union Mine; Uranium Mine), St Stephen-in-Brannel, Cornwall, England, UKSouth TerrasDarnley et al. (1965) MM34_159Mean of two analyses
Lucy_261494547 ± 2206Pb/238UUsing Pockleys Interpretations, it is acceptable to say that South Terras, Geevor, and Wheal Owles are not reliable indications of Tertiary mineralization.      1327South Terras Mine (Resugga & Tolgarrick Mine; Union Mine; Uranium Mine), St Stephen-in-Brannel, Cornwall, England, UKSouth TerrasDarnley et al. (1965) MM34_159 
Lucy_277808080 Galena age for South Terrasgalena   Galena  1327South Terras Mine (Resugga & Tolgarrick Mine; Union Mine; Uranium Mine), St Stephen-in-Brannel, Cornwall, England, UKSouth TerrasDarnley et al. (1965) MM34_159These results have been calculated using Moorbath's constants, from the tables compiled by Pockley (1961)

SampleSource LocalityReference URL

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