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:
Tanygrisiau, Blaenau Ffestiniog, Gwynedd, Wales, UK


mindat Locality ID: 24655
mindat URL: http://www.mindat.org/loc-24655.html

Tectonic Settings:

Total number of sublocalities beneath "Tanygrisiau, Blaenau Ffestiniog, Gwynedd, Wales, UK": 2
Total number of bottom-level sublocalities: 2

Number of Child Localities: 2
Child Localities:
Cwmorthin Quarry
Tanygrisiau Railway Station

Latitude: 52°59'29"N
Longitude: 3°57'47"W
Decimal Degree (lat, lon): 52.991388888889,-3.9630555555556

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 C Ca Ce F Fe H Mg Na O P Pb S Si Ti Y 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
BrookiteChloriteClayFeldsparNickelineNoneNot in a structural groupPyriteQuartzRocksalt
RutileZircon

11 IMA Minerals at location:
Albite  (*)Anatase  (*)Brookite  (*)Clinochlore  (*)Galena  (*)
Pyrite  (*)Pyrrhotite  (*)Quartz  (*)Rutile  (*)Synchysite-(Ce)  (*)
Xenotime-(Y)  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Albite  (*)FeldsparNa(AlSi3O8)2123297,1232988803
Anatase  (*)Not in a structural groupTiO22123297,1232982162
Brookite  (*)BrookiteTiO22123297,123298700
Clinochlore  (*)Chlorite ClayMg5Al(AlSi3O10)(OH)811232981756
Galena  (*)RocksaltPbS112329724243
Pyrite  (*)PyriteFeS2112329739462
Pyrrhotite  (*)NickelineFe7S811232979056
Quartz  (*)QuartzSiO22123297,12329861156
Rutile  (*)RutileTiO22123297,1232985614
Synchysite-(Ce)  (*)NoneCaCe(CO3)2F2123297,123298232
Xenotime-(Y)  (*)ZirconY(PO4)1123297939



No ages have been assigned to this locality yet.

SampleSource LocalityReference URL


All locality data graciously provided by mindat.org

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