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:
Baldhu, Kea, Cornwall, England, UK

Oldest recorded age at locality: 269
Youngest recorded age at locality: 263

mindat Locality ID: 41724
mindat URL: http://www.mindat.org/loc-41724.html

Tectonic Settings:

Total number of sublocalities beneath "Baldhu, Kea, Cornwall, England, UK": 8
Total number of bottom-level sublocalities: 6

Number of Child Localities: 2
Child Localities:
Falmouth And Sperries Mine
Wheal Jane (Falmouth Consolidated Mines)

Latitude: 50°14'42"N
Longitude: 5°7'19"W
Decimal Degree (lat, lon): 50.245,-5.1219444444444

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 As Ba Bi C Ca Cl Co Cu F Fe H K Mg Ni O P Pb S Sb Si Sn Zn 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AluniteApatiteAragoniteArsenopyriteBaryteBerauniteCalciteChalcanthiteChalcopyriteChildrenite
ChloriteClayCopperDevillineFluoriteKaoliniteMarcasiteMelanteriteNickelineNone
PentlanditePerovskitePharmacosideritePyriteQuartzRocksaltRutileSerpentineSkutteruditeSphalerite
SpinelStanniteStibniteTetrahedriteVivianiteWurtzite

44 IMA Minerals at location:
Annabergite  (*)Arsenopyrite  (*)Baryte  (*)Beraunite  (*)Bismuthinite  (*)
Bornite  (*)Cacoxenite  (*)Cassiterite  (*)Cerussite  (*)Chalcanthite  (*)
Chalcopyrite  (*)Childrenite  (*)Clinochlore  (*)Crandallite  (*)Cronstedtite  (*)
Devilline  (*)Fluorapatite  (*)Fluorite  (*)Galena  (*)Graphite  (*)
Hisingerite  (*)Hydrozincite  (*)Kaolinite  (*)Langite  (*)Ludlamite  (*)
Magnetite  (*)Marcasite  (*)Melanterite  (*)Nickeline  (*)Pentlandite  (*)
Pharmacosiderite  (*)Pyrite  (*)Pyromorphite  (*)Pyrrhotite  (*)Quartz  (*)
Siderite  (*)Silver  (*)Skutterudite  (*)Sphalerite  (*)Stannite  (*)
Stibnite  (*)Tennantite-(Fe)  (*)Vivianite  (*)Wurtzite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Annabergite  (*)VivianiteNi3(AsO4)2·8H2O2692631117736445
Arsenopyrite  (*)ArsenopyriteFeAsS26926311177369052
Baryte  (*)BaryteBa(SO4)269263111773611547
Beraunite  (*)BerauniteFe3+6(PO4)4O(OH)4·6H2O2692631117736136
Bismuthinite  (*)StibniteBi2S326926311177361935
Bornite  (*)NoneCu5FeS411177335516
Cacoxenite  (*)NoneFe3+24AlO6(PO4)17(OH)12·75H2O2692631117736280
Cassiterite  (*)RutileSnO22692634117733,117734,117736,1177375171
Cerussite  (*)AragonitePb(CO3)2692632117733,1177364979
Chalcanthite  (*)ChalcanthiteCu(SO4)·5H2O2692631117736925
Chalcopyrite  (*)ChalcopyriteCuFeS22692633117732,117733,11773627198
Childrenite  (*)ChildreniteFe2+Al(PO4)(OH)2·H2O269263111773693
Clinochlore  (*)Chlorite ClayMg5Al(AlSi3O10)(OH)826926311177361756
Crandallite  (*)AluniteCaAl3(PO4)(PO3OH)(OH)62692631117736310
Cronstedtite  (*)Clay Serpentine(Fe2+,Fe3+)3(Si,Fe3+)2O5(OH)4269263111773654
Devilline  (*)DevillineCaCu4(SO4)2(OH)6·3H2O2692631117736366
Fluorapatite  (*)ApatiteCa5(PO4)3F26926311177362740
Fluorite  (*)FluoriteCaF226926311177369617
Galena  (*)RocksaltPbS2692632117733,11773624243
Graphite  (*)NoneC26926311177362812
Hisingerite  (*)Kaolinite ClayFe2Si2O5(OH)4·2H2O2692631117736144
Hydrozincite  (*)NoneZn5(CO3)2(OH)626926311177361066
Kaolinite  (*)Clay KaoliniteAl2Si2O5(OH)426926311177365591
Langite  (*)NoneCu4(SO4)(OH)6·2H2O1117733593
Ludlamite  (*)NoneFe2+3(PO4)2·4H2O269263111773666
Magnetite  (*)SpinelFe2+Fe3+2O4269263111773614899
Marcasite  (*)MarcasiteFeS226926311177365674
Melanterite  (*)MelanteriteFe(SO4)·7H2O2692631117736915
Nickeline  (*)NickelineNiAs2692631117736633
Pentlandite  (*)Pentlandite(Ni,Fe)9S826926311177361512
Pharmacosiderite  (*)PharmacosideriteKFe3+4(AsO4)3(OH)4·6-7H2O2692632117733,117736428
Pyrite  (*)PyriteFeS22692633117733,117736,11773739462
Pyromorphite  (*)ApatitePb5(PO4)3Cl11177331725
Pyrrhotite  (*)NickelineFe7S826926311177369056
Quartz  (*)QuartzSiO22692632117736,11773761156
Siderite  (*)CalciteFe(CO3)2692632117733,1177366417
Silver  (*)CopperAg11177335186
Skutterudite  (*)Skutterudite PerovskiteCoAs31117733531
Sphalerite  (*)SphaleriteZnS2692634117733,117734,117736,11773721482
Stannite  (*)Stannite SphaleriteCu2FeSnS42692631117736668
Stibnite  (*)StibniteSb2S311177333418
Tennantite-(Fe)  (*)TetrahedriteCu6(Cu4Fe2)As4S1326926311177361803
Vivianite  (*)VivianiteFe2+3(PO4)2·8H2O2692632117733,117736636
Wurtzite  (*)WurtziteZnS2692631117736372



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
Lucy_075269263266 ± 3Sm-Nd fluorite   Fluorite  846Wheal Jane (Falmouth Consolidated Mines), Baldhu, Kea, Cornwall, England, UKWheal JaneLeBoutillier et al. (2003) GSWE10_403 
Lucy_159269263266 ± 3Sm-NdAssigned to the 'main stage' of cassiterite lode development but a later event.fluorite   Fluorite  846Wheal Jane (Falmouth Consolidated Mines), Baldhu, Kea, Cornwall, England, UKWheal JaneChen et al (1993)10.1144/gsjgs.150.6.1183JGSL150_1183Protracted hiatus between the pluton emplacement and main-stage Sn(-Cu) lode mineralization has been proposed based on Sm-Nd isochron dating of fluorites from the South Crofty and Wheal Jane mines. These were assigned to the 'main stage' of cassiterite lode development by Chesney et al (1991a, b) but to a later event by Chesney et al. (1990).


SampleSource LocalityReference URL


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