360 On the Superposition of certain Minerals. 



abundant of them occur. The nature of the {country) con- 

 taining rock is prefixed : — the first column denotes the mineral 

 adjoining the {wall) side of the lode ; the second, that which 

 rests on that named in the first ; the third, the substance 

 overlying the second, and so on : the last column contains the 

 names of some of the localities. The italic letter denotes the 

 crystalline ; the Roman, the massive minerals. 



Mineral adjoining wall of Mineral resting on that Mineral resting on that Mineral resting on 

 lode. in first column. in second column. that in third column. 



Containing rock— Granite. 



Quartz 



Quartz 



Quartz 



Quartz 



Quartz 



Quartz 



Quartz 



Quartz 



Quartz 



Quartz 



Quartz 



Amethystine quartz. 

 Amethystine quartz. 



Felspar 



Fluor 



Quartz 



Opal 



Quartz 



Quartz 



Quartz 



Quartz 



Quartz 



Oxide of tin 



Native copper 



Malachite 



Mineral pitch 



Quartz 



Amethystine quartz 

 Phosphate of iron. . . 

 Fluor 



Oxide of tin 



Oxide of tin 



Hematite iron ore 

 Earthy brown iron ore 

 Earthy brown iron ore 



Chalcedony 



Arseniate of iron'. . . . 



Wolfram 



Arseniate of copper. . 



Uranite 



Tungstate of lime . . 

 Red oxide of copper. . 



Sulphuret of bismuth 

 Specular iron ore. . . 

 Vitreous copper ore 

 Red oxide of copper 



Quartz 



Black copper ore . . 



Numerous. 

 Wheal Cairn. 

 Pcdn-an-drea. 

 Wheal Gorland. 

 St. Michael's Mount 

 Wheal Unity. 

 Gunnis Lake. 

 Wheal Friendship. 

 Wheal Gorland. 

 Gunnis Lake. 

 East Wheal Crofty. 

 Wheal Bellon. 

 Dartmoor. 

 Park-noweth. 

 Wheal Gorland. 



f All tin mines in gra 



\ nite. 

 Balleswidden. 

 Park-noweth. 

 Wheal Jewel. 

 Wheal Gorland. 



Containing rock — Greenstone. 



Quartz 

 Quartz 

 Quartz 

 Quartz 

 Quartz 

 Quartz 

 Quartz 

 Quartz 

 Quartz 

 Quartz 

 Quartz 

 Quartz 

 Quartz 

 Quartz 

 Quartz 

 Quartz 

 Quartz 



Stalactitic quartz . . . 



Quartz 



Quartz 



Quartz 



Quartz 



Quartz 



Chlorite 



Chlorite 



Fluor 



Arsenical pyrites . . . 

 Earthy brown iron ore 

 Earthy brown iron ore 

 Earthy brown iron ore 

 Earthy brown iron ore 

 Carbonate of iron . . 



Quartz 



Arragonite 



Hydrous oxide of iron 



Wolfram 



Arseniate of copper. . 

 Arseniate of lead. . . . 



Oxide of tin 



Arseniate of lead 



Fluor 



Arsenical pyrites. . . . 

 Phosphate of copper. 



Pitch-blende 



Uranite 



Vitreous copper ore 

 Spathose iron ore 



Vitreous copper ore. . \Arragonite 

 Chlorite Copper pyrites 



Mineral pitch 



Wheal Edward. 

 Levant. 

 Restormel. 

 Poldice. 

 Wheal Unity. 

 Wheal Unity. 

 Wheal Vor. 

 Wheal Unity. 

 Wheal Unity Wood. 

 Wheal Unity Wood. 

 Gunnis Lake. 

 Wheal Edward. 

 Wheal Edward. 

 Botallack. 

 Botallack. 

 Levant. 

 North Roskear. 



Containing rock — Felspar porphyry (Elvan). 



Oxide of tin . . 

 Silicate of tin 



Quartz 



Oxide of tin 



Quartz 



Quartz 



Earthy brown iron ore 

 Earthy brown iron ore 

 Earthy brown iron ore 

 Earthy brown iron ore 

 Earthy brown iron ore 

 Earthy brown iron ore 



Earthy brown iron ore 



Earthy brown iron ore 



Copper pyrites 



Copper pyrites 



Native copper 



Vitreous copper ore . 

 Red oxide of copper 

 Arseniate of copper. 

 Crysocolla 



f Blue carbonate o 

 \ copper. 

 Malachite . 



' f \ 



Wherry. 

 Wheal Coates. 



Ti-ig Tang. 



Ting Tang. 

 Ting Tang. 

 Ting Tang. 

 Wheal Buller. 

 Ting Tang. 

 Ting Tang. 

 Ting Tang. 

 Ting Tang. 



