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Lleyn Peninsula, Gwynedd (Caernarvonshire), Wales, UK

The Lleyn Peninsula, an undulating spur reaching out from the mountains of Snowdonia, is the most westerly point of Gwynedd. Twenty five miles long, it averages eight miles in width, and separates Caernarfon and Cardigan Bays. It is bordered to the east by the A487 Caernarfon-Porthmadog road.

At various times manganese, iron and lead-copper mines have operated on the Lleyn.




Mineral list contains entries from the region specified including sub-localities


Mineral List:
Alleghanyite
Analcime
Anglesite
Apatite-(CaF)
'Apophyllite'
Atacamite
Axinite-(Fe)
Banalsite (TL)
Bannisterite (TL)
Baryte
Birnessite
Bixbyite
Bornite
Botallackite
Brookite
Calcite
Caryopilite
Celsian
Cerussite
Chalcopyrite
Cotunnite
Cumengeite
Cymrite (TL)
Epidote
Feitknechtite
Galena
Ganophyllite
Harmotome
Hausmannite
Hyalophane
Iwakiite
Jacobsite
Manganite
Manganosite
Natrolite
Neotocite
Paracelsian
Paragonite
Pectolite
Pennantite (TL)
Phosgenite
Piemontite
Piemontite-(Sr)
Powellite
Prehnite
Pyrochroite
Pyrolusite
Pyrophanite
Pyroxmangite
Quartz
Rhodochrosite
Rhodonite
Romanèchite
Stevensite
Strontianite
Sulphur
Tephroite


73 entries listed. 54 valid minerals. 4 type localities (valid minerals).

Localities in this Region:
UK
 
  • Wales
    • Gwynedd (Caernarvonshire)
      • Lleyn Peninsula
          • Llanengan
          • Nant-y-Gadwen
          • Porth Dinllaen
        • Pwllheli

The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database!
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Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 22nd Nov 2009 15:54:05