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Tyllau mwn (Friar's Coat), Dinas Mawddwy, Gwynedd (Merionethshire), Wales, UK

UK Grid Reference: SH844205
Latitude: 52°46'9"N
Longitude: 3°42'49"W
A remote location marked on old OS maps as Tyllau mwn (mine shafts). Thought to be the site of an unsuccessful trial referred to under the name of Friar's Coat in 1770. According to the Geological Survey, iron ore (bedded oolitic ironstone with magnetite) was raised here in about 1878, 1910 and 1920.

Mineral List


8 entries listed. 8 valid minerals.

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Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. 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 thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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