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Citation: Kc. Dunham et al., Rich silver-bearing lead ores in the Northern Pennines?, P YORKS G S, 53, 2001, pp. 207-212

Authors: Ball, TK Colman, TB

Citation: Tk. Ball et Tb. Colman, Geochemistry of caldera and wallrock alteration associated with volcanogenic sulphide vein mineralization, Snowdonia, North Wales, T I MIN M-B, 107, 1998, pp. B63-B75