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:
Stenna Gwyn Mine (Stennagwyn Mine), Foxhole, St Stephen-in-Brannel, Cornwall, England, UK


mindat Locality ID: 1077
mindat URL: http://www.mindat.org/loc-1077.html

Tectonic Settings:

Total number of sublocalities beneath "Stenna Gwyn Mine (Stennagwyn Mine), Foxhole, St Stephen-in-Brannel, Cornwall, England, UK": 0
Total number of bottom-level sublocalities: 0

Latitude: 50°21'41"N
Longitude: 4°51'56"W
Decimal Degree (lat, lon): 50.361388888889,-4.8655555555556
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 Ca Cu F Fe H K Mg O P S Si Sn U W 

Elements from minerals reported directly at this locality: Al As Ca Cu F Fe H K Mg O P S Si Sn U W 

Structural Groups for minerals in this locality: 
AmorphousAmphiboleApatiteArsenopyriteAutuniteChalcopyriteClayColumbiteFluoriteMica
NoneQuartzRutileSphaleriteStanniteTalcWavellite

16 IMA Minerals at location:
Arsenopyrite  (*)Autunite  (*)Cassiterite  (*)Chalcopyrite  (*)Ferberite  (*)
Fluellite  (*)Fluorapatite  (*)Fluorite  (*)Muscovite  (*)Opal  (*)
Quartz  (*)Stannite  (*)Talc  (*)Torbernite  (*)Tremolite  (*)
Wavellite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Arsenopyrite  (*)ArsenopyriteFeAsS09052
Autunite  (*)AutuniteCa(UO2)2(PO4)2·10-12H2O01272
Cassiterite  (*)RutileSnO205171
Chalcopyrite  (*)ChalcopyriteCuFeS2027198
Ferberite  (*)ColumbiteFe2+(WO4)0551
Fluellite  (*)NoneAl2(PO4)F2(OH)·7H2O040
Fluorapatite  (*)ApatiteCa5(PO4)3F02740
Fluorite  (*)FluoriteCaF209617
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)2017380
Opal  (*)AmorphousSiO2·nH2O02994
Quartz  (*)QuartzSiO2061156
Stannite  (*)Stannite SphaleriteCu2FeSnS40668
Talc  (*)Clay TalcMg3Si4O10(OH)203337
Torbernite  (*)NoneCu(UO2)2(PO4)2·12H2O01059
Tremolite  (*)Amphibole   Ca2(Mg5.0-4.5Fe2+0.0-0.5)Si8O22(OH)202562
Wavellite  (*)WavelliteAl3(PO4)2(OH)3·5H2O0374


No ages have been assigned to this locality yet.
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