 | | Journal (volume) | | mineral assemblage of the Mendip Hills, Somerset, UK using a stability field model Trevor F. Bridges,...Benallt Manganese Mine, Rhiw, Pen Llŷn, Gwynedd, Wales Tom F. Cotterell 29-40 Tungsten and bismuth minerals...58-62 Copper and barium mineralisation at Forcett Quarry, East Layton, North Yorkshire Brian Young, Trevor...mine, Benallt Mine on the Lleyn Peninsula, North Wales, is reviewed by Tom Cotterell who reports recent...volume describe copper mineralisation in Forcett Quarry, North Yorkshire and at Rassal Mine in the Scottish |  | | Book | | provided by: Amgueddfa Cymru (National Museum of Wales, Cardiff); British Geological Survey, Edinburgh...have changed over time. This is not to say that all old work is valueless: the observation of Hey (1973)...(1973) is still valid that there arc 150-ycar-old unulyscs as accurate as any made today. Other exclusions...Meldonaplitequarry,nrOkehampton, Devon ~.~eldon ap::'te quarry,nrOkehamp:on. 0: ,0,1: roci...tellurob:smu'Ji::eC!ogau andVigramines,nr Oolgellau, Gwynedd, Wales t!.e'.don ra:::ayqJarry,nr o~eha'Tlp'.:i. , Dev:i:i |  | | Book | | Saint-Hilaire pluton 36 Geology of the Poudrette quarry Miarolitic cavities in nepheline syenite Sodalite...progressed well through repeated visits to the operating quarry and collaborations with visiting professionals...chiseling away at the quarry walls. Intrigued, they later ventured into the quarry and discovered what...the search continues; their latest visit to the quarry took place in July 2018. Additions were made to... This small unassuming hill with a dusty stone quarry on its north flank, which some enthusiastic collectors |
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