Supergene minerals including exceptional ramsbeckite from Penrhiw Mine, bYstumtuen/b, Dyfed. UK Journal of Mines & Minerals, 15, 21-27. Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward b.../b
Supergene minerals including exceptional ramsbeckite from Penrhiw Mine, bYstumtuen/b, Dyfed. UK Journal of Mines & Minerals, 15, 21-27. Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward b.../b