| Cymrite | Campbell Smith, W., Bannister, F. A., & Hey, M. H. (1949). Cymrite, a new barium mineral from the Benallt manganese mine, Rhiw, Carnarvoshire. Mineralogical Magazine, 28, 676-681. ; UK Journal of mines & Minerals, number 29 pp47-48; UKJMM Vol.29 p.14 |