CHERNOVITE-(Y) IN REDUCTION SPOTS IN WELSH SLATE

摘要

Chernovite-(Y) occurs with quartz, calcite, epidote, dravite, and synchysite-(Ce) in green reduction spots in lower Cambrian slates from Alexandra Quarry, Gwynedd, Wales. This is the first definite record of the mineral from Britain and the first report of an arsenic-bearing mineral in this type of geological environment.