| hystatite .................................... 262 Y: yarrowite to yugawaralite .........................provided by: Amgueddfa Cymru (National Museum of Wales, Cardiff); British Geological Survey, Edinburgh...a'1thanum 36 57 VI Tungsten Li L'.h;um Lutc:tium Xe y Xenon Lu l/.3 11.agnesum 3 71 12 Yb Ytterbium...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. |
