Minerals of Cornwall and Devon

pp. 154 #260422 Natural History

active alteration arsenic Assn associated became bought British Camborne Carn cassiterite catalogue century clay close collection collectors considerable Consols contained copper Cornish Cornish mines Cornwall see fig County crystals Dartmoor dealer deposits depth Devon earlier early east engine England example fathoms fluorite further Geol Geology granite Gunnislake Gwennap Hill History important Inst interest iron John known largest late later lead levels locality lodes London metal miles mineral Mineralogy mines Moor Museum Natural nineteenth Notes Observations occurred original parish present probably Proc produced pumping quarry quartz Rashleigh recorded Redruth region remains remarkable rich Richard Talling rocks Royal running Russell Shaft showing side smaller South south-west England species specimen BM St Agnes St Austell stream surface tion Trans TRGSC Truro United Valley vein wall West Wheal zone