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 Day United Mines (Poldice Mines), St Day, Gwennap, Cornwall, England, UK


mindat Locality ID: 194315
mindat URL: http://www.mindat.org/loc-194315.html

Tectonic Settings:

Total number of sublocalities beneath "St Day United Mines (Poldice Mines), St Day, Gwennap, Cornwall, England, UK": 2
Total number of bottom-level sublocalities: 1

Number of Child Localities: 1
Child Localities:
Poldice Mine

Latitude: 50°14'29"N
Longitude: 5°9'30"W
Decimal Degree (lat, lon): 50.241388888889,-5.1583333333333

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 Co Cu F Fe H Mo O P Pb S Sb Si Sn Ti Zn 

Elements from minerals reported directly at this locality: Be Cu H O P Si 

Structural Groups for minerals in this locality: 
ArsenopyriteBrookiteCalciteChalcopyriteCopperFluoriteGypsumMolybdeniteNoneNot in a structural group
PhenakitePyriteQuartzRocksaltRutileSpangoliteSphaleriteTetrahedriteTitaniteVivianite

20 IMA Minerals at location:
Anatase  (*)Arsenopyrite  (*)Brookite  (*)Cassiterite  (*)Chalcopyrite  (*)
Copper  (*)Erythrite  (*)Fluorite  (*)Galena  (*)Gypsum  (*)
Molybdenite  (*)Phenakite  (*)Pseudomalachite  (*)Pyrite  (*)Quartz  (*)
Siderite  (*)Spangolite  (*)Sphalerite  (*)Tetrahedrite-(Zn)  (*)Titanite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Anatase  (*)Not in a structural groupTiO211176362162
Arsenopyrite  (*)ArsenopyriteFeAsS11176369052
Brookite  (*)BrookiteTiO21117636700
Cassiterite  (*)RutileSnO22117636,1176375171
Chalcopyrite  (*)ChalcopyriteCuFeS2111763627198
Copper  (*)CopperCu11176363846
Erythrite  (*)VivianiteCo3(AsO4)2·8H2O1117636814
Fluorite  (*)FluoriteCaF211176369617
Galena  (*)RocksaltPbS111763624243
Gypsum  (*)GypsumCa(SO4)·2H2O11176366890
Molybdenite  (*)MolybdeniteMoS211176365800
Phenakite  (*)PhenakiteBe2(SiO4)0326
Pseudomalachite  (*)NoneCu5(PO4)2(OH)40369
Pyrite  (*)PyriteFeS2111763639462
Quartz  (*)QuartzSiO2111763661156
Siderite  (*)CalciteFe(CO3)11176366417
Spangolite  (*)SpangoliteCu6Al(SO4)(OH)12Cl·3H2O1117636105
Sphalerite  (*)SphaleriteZnS111763621482
Tetrahedrite-(Zn)  (*)TetrahedriteCu6(Cu4Zn2)Sb4S1311176365317
Titanite  (*)TitaniteCaTi(SiO4)O11176364899



No ages have been assigned to this locality yet.

SampleSource LocalityReference URL


All locality data graciously provided by mindat.org

All age data...

Other copyright data...