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:
Wheal Castle, Boswedden Mine (incl. Wheal Praze; Wheal Williams; Yankee Boy Mine), Kenidjack Valley, St Just, Cornwall, England, UK

Oldest recorded age at locality: 270
Youngest recorded age at locality: 100

mindat Locality ID: 1301
mindat URL: http://www.mindat.org/loc-1301.html

Tectonic Settings:

Total number of sublocalities beneath "Wheal Castle, Boswedden Mine (incl. Wheal Praze; Wheal Williams; Yankee Boy Mine), Kenidjack Valley, St Just, Cornwall, England, UK": 0
Total number of bottom-level sublocalities: 0

Latitude: 50°7'51"N
Longitude: 5°42'5"W
Decimal Degree (lat, lon): 50.130833333333,-5.7013888888889

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 Be C Ca Cl Cu F Fe H Mg O P S Si Sn 

Elements from minerals reported directly at this locality: Al As Be C Ca Cl Cu F Fe H Mg O P S Si Sn 

Structural Groups for minerals in this locality: 
ApatiteArsenopyriteBerylBrochantiteCalciteChalcopyriteConnelliteCorundumDiasporeMalachite
NonePyriteQuartzRutile

17 IMA Minerals at location:
Arsenopyrite  (*)Beryl  (*)Brochantite  (*)Calcite  (*)Cassiterite  (*)
Chalcocite  (*)Chalcopyrite  (*)Connellite  (*)Dolomite  (*)Fluorapatite  (*)
Goethite  (*)Hematite  (*)Langite  (*)Malachite  (*)Pyrite  (*)
Quartz  (*)Siderite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Arsenopyrite  (*)ArsenopyriteFeAsS27010009052
Beryl  (*)BerylBe3Al2Si6O1827010004286
Brochantite  (*)BrochantiteCu4(SO4)(OH)627010001633
Calcite  (*)CalciteCa(CO3)270100027770
Cassiterite  (*)RutileSnO227010005171
Chalcocite  (*)NoneCu2S27010005707
Chalcopyrite  (*)ChalcopyriteCuFeS2270100027198
Connellite  (*)ConnelliteCu36(SO4)(OH)62Cl8·6H2O2701000295
Dolomite  (*)NoneCaMg(CO3)227010009895
Fluorapatite  (*)ApatiteCa5(PO4)3F27010002740
Goethite  (*)DiasporeFeO(OH)27010007437
Hematite  (*)CorundumFe2O3270100014640
Langite  (*)NoneCu4(SO4)(OH)6·2H2O2701000593
Malachite  (*)MalachiteCu2(CO3)(OH)2270100012537
Pyrite  (*)PyriteFeS2270100039462
Quartz  (*)QuartzSiO2270100061156
Siderite  (*)CalciteFe(CO3)27010006417



1 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_081270100270-10040Ar - 39ArLodes post-dating elvan intrusion and primary mineralization.   Yes  1265St Just, Cornwall, England, UKSt JustHawkes et al. (1978 US4_51Possibility of hydrothermal degassing of lode material around 210 Ma and 215 Ma which overprints a primary formation age of roughly 270 Ma. New mineral growth may have occurred close to 165 Ma with further hydrothermal activity at about 100 Ma. Adularia from veins in the Lizard Complex also provides indication


SampleSource LocalityReference URL


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