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:
Cliff Outcrops, Botallack, St Just, Cornwall, England, UK

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

mindat Locality ID: 241245
mindat URL: http://www.mindat.org/loc-241245.html

Tectonic Settings:

Total number of sublocalities beneath "Cliff Outcrops, Botallack, St Just, Cornwall, England, UK": 7
Total number of bottom-level sublocalities: 7

Number of Child Localities: 7
Child Localities:
Botallack Cliff
Botallack Head (Wheal Cock Carn)
Chycornish Carn (?)
Crowns Rock
Stamps And Jowl Zawn (Roscommon Cliff)
Wheal Cock Zawn
Zawn A Bal

Latitude: 50°8'37"N
Longitude: 5°41'33"W
Decimal Degree (lat, lon): 50.143611111111,-5.6925
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 Be C Ca Cl Co Cu Fe H K Mg Mn Na Ni O S Si Sn Ti W Zn 

Elements from minerals reported directly at this locality: H Mg O Si 

Structural Groups for minerals in this locality: 
AluniteAmphiboleAtacamiteAxiniteBerylCalciteCancrinite-sodaliteClinozoisiteEpidoteGarnet
NatroliteNickelineNoneNot in a structural groupPerovskitePhenakitePrehnitePyroxeneQuartzRutile
ScheeliteSkutteruditeSodaliteSpinelTitaniteTourmalineVivianite

31 IMA Minerals at location:
Actinolite  (*)Almandine  (*)Antlerite  (*)Asbolane  (*)Axinite-(Fe)  (*)
Botallackite  (*)Calcite  (*)Cassiterite  (*)Cordierite  (*)Cummingtonite  (*)
Danalite  (*)Diopside  (*)Epidote  (*)Erythrite  (*)Grossular  (*)
Jarosite  (*)Magnetite  (*)Malayaite  (*)Natrolite  (*)Paratacamite  (*)
Phenakite  (*)Prehnite  (*)Pyrrhotite  (*)Quartz  (*)Scheelite  (*)
Schorl  (*)Skutterudite  (*)Stokesite  (*)Titanite  (*)Tremolite  (*)
Wickmanite  (*)
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)22701002118791,1187923419
Almandine  (*)GarnetFe2+3Al2(SiO4)327010011187902353
Antlerite  (*)Not in a structural groupCu2+3(SO4)(OH)42701001118788246
Asbolane  (*)Not in a structural groupMn4+(O,OH)2·(Co,Ni,Mg,Ca)x(OH)2x·nH2O2701001118792143
Axinite-(Fe)  (*)AxiniteCa4Fe2+2Al4[B2Si8O30](OH)22701003118789,118792,118793260
Botallackite  (*)AtacamiteCu2Cl(OH)3270100111878949
Calcite  (*)CalciteCa(CO3)2701002118791,11879227770
Cassiterite  (*)RutileSnO227010011187925171
Cordierite  (*)BerylMg2Al4Si5O1827010011187891008
Cummingtonite  (*)Amphibole   Mg2Mg5Si8O22(OH)22701000327
Danalite  (*)Cancrinite-sodalite SodaliteBe3Fe2+4(SiO4)3S270100111878958
Diopside  (*)PyroxeneCaMgSi2O627010011187914135
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)2701002118789,1187918173
Erythrite  (*)VivianiteCo3(AsO4)2·8H2O2701002118791,118792814
Grossular  (*)GarnetCa3Al2(SiO4)32701002118791,1187941544
Jarosite  (*)AluniteKFe3+3(SO4)2(OH)627010011187882228
Magnetite  (*)SpinelFe2+Fe3+2O4270100111879114899
Malayaite  (*)TitaniteCaSnO(SiO4)270100111879140
Natrolite  (*)NatroliteNa2(Si3Al2)O10·2H2O27010011187891236
Paratacamite  (*)AtacamiteCu3(Cu,Zn)Cl2(OH)62701001118788158
Phenakite  (*)PhenakiteBe2(SiO4)2701001118792326
Prehnite  (*)PrehniteCa2Al(Si3Al)O10(OH)227010011187891898
Pyrrhotite  (*)NickelineFe7S827010011187919056
Quartz  (*)QuartzSiO22701002118789,11879261156
Scheelite  (*)ScheeliteCa(WO4)27010011187924894
Schorl  (*)TourmalineNaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)2701002118791,1187922705
Skutterudite  (*)Skutterudite PerovskiteCoAs32701001118791531
Stokesite  (*)NoneCaSnSi3O9·2H2O2701002118792,11879321
Titanite  (*)TitaniteCaTi(SiO4)O27010011187914899
Tremolite  (*)Amphibole   Ca2(Mg5.0-4.5Fe2+0.0-0.5)Si8O22(OH)227010011187882562
Wickmanite  (*)PerovskiteMn2+Sn4+(OH)6270100111879324


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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