Mindat Logo
Home Page Log In Message Board The Mindat Directory
Register Search Pages Chat Now! (6 online) Mindat Auctions

Mattheddleite from
Frongoch Mine (Bron-y-Goch Mine; Llawynwnwch Mine), Pontrhydygroes, Upper Llanfihangell-y-Creuddyn, Ceredigion (Dyfed; Cardiganshire), Wales, UK


Site Photo

Frongoch Mine (Bron-y-Goch Mine; Llawynwnwch Mine), Pontrhydygroes, Upper Llanfihangell-y-Creuddyn, Ceredigion (Dyfed; Cardiganshire), Wales, UK
© Steve Rust
Description
Comments:Colourless prismatic xls to 0.25mm with susannite, caledonite (XRD)
Habit:Prismatic
Colour:Colourless
Quality of samples:not specified / average specimens
Rarity at site:Very Rare
Confirmation
Validity:Confirmed
Confirmation Methods:XRD
Analysis Reference:Leeds University, UK
References
References:BMS Database, UKJMM 17
Associated minerals:
Associates:Caledonite
Susannite
Data
Mineral Data:Click here to view Mattheddleite data
Locality Data:Click here to view Frongoch Mine (Bron-y-Goch Mine; Llawynwnwch Mine), Pontrhydygroes, Upper Llanfihangell-y-Creuddyn, Ceredigion (Dyfed; Cardiganshire), Wales, UK
Photo GalleryView Gallery (2 photos)
Mineral and/or Locality
Google
 
www.mindat.org Web
Copyright © Jolyon & Ida Ralph 1993-2008. 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.