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:
Sennen, Cornwall, England, UK

Oldest recorded age at locality: 340
Youngest recorded age at locality: 235

mindat Locality ID: 33689
mindat URL: http://www.mindat.org/loc-33689.html

Tectonic Settings:

Total number of sublocalities beneath "Sennen, Cornwall, England, UK": 5
Total number of bottom-level sublocalities: 4

Number of Child Localities: 3
Child Localities:
Carn Escalls Mine
Land's End
Sennen Cove

Latitude: 50°3'54"N
Longitude: 5°41'42"W
Decimal Degree (lat, lon): 50.065,-5.695
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 B Ca Fe H K Na O Si Sn Ti 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
DiasporeFeldsparNoneQuartzRutileTitaniteTourmaline

6 IMA Minerals at location:
Cassiterite  (*)Goethite  (*)Orthoclase  (*)Quartz  (*)Schorl  (*)
Titanite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Cassiterite  (*)RutileSnO23402353118324,118325,1183275171
Goethite  (*)DiasporeFeO(OH)34023511183277437
Orthoclase  (*)FeldsparK(AlSi3O8)34023511183272349
Quartz  (*)QuartzSiO23402352118327,11832861156
Schorl  (*)TourmalineNaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)34023511183252705
Titanite  (*)TitaniteCaTi(SiO4)O34023511183264899


13 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_166277.1276.7277.1 - 276.7Pb-U/Pb-PbRange of ages given with 206Pb/238U, 207Pb/235U and 207Pb/206Pb.whole rockCORN-217 (3,4) Yes  221607Castle-an-Dinas Quarry, Higher Trenowin, Ludgvan, Cornwall, England, UKCastle-an-Dinas QuarryChen et al (1993)10.1144/gsjgs.150.6.1183JGSL150_1183Analytical data for igneous monazites with sample and (analysis) numbers
Lucy_167273.2272272.6 ± 0.640Ar-39ArIntergrated age of Cornubian BatholithmuscoviteCORN-217 YesMuscovite  221607Castle-an-Dinas Quarry, Higher Trenowin, Ludgvan, Cornwall, England, UKCastle-an-Dinas QuarryChen et al (1993)10.1144/gsjgs.150.6.1183JGSL150_1183Analytical data for micas
Lucy_129271251261 ± 10K/ArPrevious K/Ar determinationbiotite     1017Land's End, Sennen, Cornwall, England, UKLands End GraniteBray and Spooner (1983)10.1144/GSL.SP.1964.001.01.15EG78_1064Arithmetic mean of 5 biotite samples from Lands End Granite
Lucy_201340340340K-ArLocality unknown. Previous age stated, later recalculated by Lambert and Mills.biotiteOxford 9437    1017Land's End, Sennen, Cornwall, England, UKLand's End GraniteMiller et al (1964)10.1002/gj.3350040109GJ4_105Isotopic ages on the granites and associated rocks of South-West England, data of previous workers (in m.yrs)
Lucy_202330330330K-ArLocality unknown. Previous age stated, recalculated from age quoted by Mayne et al.biotite     1017Land's End, Sennen, Cornwall, England, UKLand's End GraniteMiller et al (1964)10.1002/gj.3350040109GJ4_105Isotopic ages on the granites and associated rocks of South-West England, data of previous workers (in m.yrs)
Lucy_203279261270 ± 9Rb-SrLocality unknown. Previous age stated.biotite     1017Land's End, Sennen, Cornwall, England, UKLand's End GraniteMiller et al (1964)10.1002/gj.3350040109GJ4_105Isotopic ages on the granites and associated rocks of South-West England, data of previous workers (in m.yrs)
Lucy_204265235250 ± 15K-ArLocality unknown. Previous age stated.biotite     1017Land's End, Sennen, Cornwall, England, UKLand's End GraniteMiller et al (1964)10.1002/gj.3350040109GJ4_105Isotopic ages on the granites and associated rocks of South-West England, data of previous workers (in m.yrs)
Lucy_205250250250K-ArLocality unknown. Previous age stated.biotite     1017Land's End, Sennen, Cornwall, England, UKLand's End GraniteMiller et al (1964)10.1002/gj.3350040109GJ4_105Isotopic ages on the granites and associated rocks of South-West England, data of previous workers (in m.yrs)
Lucy_269279261270 ± 9Rb-SrThe mean age of biotite from Land's End granitebiotite     1017Land's End, Sennen, Cornwall, England, UKLand's End GraniteDarnley et al. (1965) MM34_159By either method the age of the Land's End biotite is clearly incompatible with the older uraninite age (290 My.) obtained from Geevor, where all the mineralized lodes are younger than the granite.
Lucy_270265235250 ± 15Rb-SrThe mean age of biotite from Land's End granitebiotite     1017Land's End, Sennen, Cornwall, England, UKLand's End GraniteDarnley et al. (1965) MM34_159By either method the age of the Land's End biotite is clearly incompatible with the older uraninite age (290 My.) obtained from Geevor, where all the mineralized lodes are younger than the granite.
Lucy_163274.6273274.6 - 273Pb-U/Pb-PbRange of ages given with 206Pb/238U, 207Pb/235U and 207Pb/206Pb.whole rockCORN-61 (2) Yes  189652Lamorna Cove, St Buryan, Cornwall, England, UKLamorna CaveChen et al (1993)10.1144/gsjgs.150.6.1183JGSL150_1183Analytical data for igneous monazites with sample and (analysis) numbers
Lucy_164270.9268.9269.9 ± 140Ar-39ArIntergrated age of Cornubian BatholithmuscoviteCORN-61 YesMuscovite  189652Lamorna Cove, St Buryan, Cornwall, England, UKLamorna CaveChen et al (1993)10.1144/gsjgs.150.6.1183JGSL150_1183Analytical data for micas
Lucy_165271.8270270.9 ± 0.940Ar-39ArIntergrated age of Cornubian BatholithbiotiteCORN-61 Yes  189652Lamorna Cove, St Buryan, Cornwall, England, UKLamorna CaveChen et al (1993)10.1144/gsjgs.150.6.1183JGSL150_1183Analytical data for micas

SampleSource LocalityReference URL

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