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:
St Michael's Mount, Cornwall, England, UK

Oldest recorded age at locality: 288
Youngest recorded age at locality: 263

mindat Locality ID: 1071
mindat URL: http://www.mindat.org/loc-1071.html

Tectonic Settings:

Total number of sublocalities beneath "St Michael's Mount, Cornwall, England, UK": 0
Total number of bottom-level sublocalities: 0

Latitude: 50°6'55"N
Longitude: 5°28'45"W
Decimal Degree (lat, lon): 50.115277777778,-5.4791666666667
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 Cu F Fe H K Mg Na O Pb S Sb Si Sn U Zn 

Elements from minerals reported directly at this locality: Al As B Be C Ca Cu F Fe H K Mg Na O Pb S Sb Si Sn U Zn 

Structural Groups for minerals in this locality: 
AmphiboleArsenopyriteBerylChalcopyriteFeldsparFluoriteLöllingiteMalachiteNoneQuartz
RocksaltRutileSphaleriteStanniteStannoiditeStibniteTopazTourmalineZippeite

20 IMA Minerals at location:
Actinolite  (*)Arsenopyrite  (*)Beryl  (*)Cassiterite  (*)Chalcopyrite  (*)
Cordierite  (*)Fluorite  (*)Galena  (*)Kësterite  (*)Löllingite  (*)
Malachite  (*)Orthoclase  (*)Quartz  (*)Schorl  (*)Sphalerite  (*)
Stannite  (*)Stannoidite  (*)Stibnite  (*)Topaz  (*)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)228826303419
Arsenopyrite  (*)ArsenopyriteFeAsS28826309052
Beryl  (*)BerylBe3Al2Si6O1828826304286
Cassiterite  (*)RutileSnO228826305171
Chalcopyrite  (*)ChalcopyriteCuFeS2288263027198
Cordierite  (*)BerylMg2Al4Si5O1828826301008
Fluorite  (*)FluoriteCaF228826309617
Galena  (*)RocksaltPbS288263024243
Kësterite  (*)Stannite SphaleriteCu2ZnSnS4288263082
Löllingite  (*)LöllingiteFeAs22882630762
Malachite  (*)MalachiteCu2(CO3)(OH)2288263012537
Orthoclase  (*)FeldsparK(AlSi3O8)28826302349
Quartz  (*)QuartzSiO2288263061156
Schorl  (*)TourmalineNaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)28826302705
Sphalerite  (*)SphaleriteZnS288263021482
Stannite  (*)Stannite SphaleriteCu2FeSnS42882630668
Stannoidite  (*)StannoiditeCu8(Fe,Zn)3Sn2S12288263080
Stibnite  (*)StibniteSb2S328826303418
Topaz  (*)TopazAl2SiO4F228826301476
Zippeite  (*)ZippeiteK2[(UO2)4(SO4)2O2(OH)2](H2O)42882630175


5 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_059288280284 ± 4Rb/SrRb/Sr Age      1071St Michael's Mount, Cornwall, England, UKSt Michael's MountBray et al. (1983)10.2113/gsecongeo.78.6.1064EG78_1064 
Lucy_060273263268 ± 5K/ArK/Ar Age      1071St Michael's Mount, Cornwall, England, UKSt Michael's MountBray et al. (1983)10.2113/gsecongeo.78.6.1064EG78_1064 
Lucy_061273263268 ± 5K-Ar muscoviteSMM/1  Muscovite  1071St Michael's Mount, Cornwall, England, UKSt Michael's MountLeBoutillier et al. (2003) GSWE10_403 
Lucy_134273263268 ± 5K/ArPrevious K/Ar determination      1071St Michael's Mount, Cornwall, England, UKSt Michael's MountBray and Spooner (1983)10.1144/GSL.SP.1964.001.01.15EG78_1064 
Lucy_135288280284 ± 4Rb/SrPrevious Rb/Sr determination      1071St Michael's Mount, Cornwall, England, UKSt Michael's MountBray and Spooner (1983)10.1144/GSL.SP.1964.001.01.15EG78_1064 

SampleSource LocalityReference URL

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