14 



A valuable Collection of W inerals, jjrincipully Cornish, ^ 



cousistingof 70 Specimens, comprisingthefollowing: — 

 No. 1. Native or Malleable Copper (Arboriferous) .... 



2. Native or Malleable Copper crystallized 



3. Massive Purple Copper (Wheal Tolgus, near 



Redruth) 



4. Crystallized Purple Copper, from Dolcoath, near 



Camborne 



6. Massive Grey Copper 



6. Crystallized Grey Copper 



7. Botryoidal Yellow Copper, or Copper Pyrites. . 



8. Yellow Copper on Quartz, in Tehadedral Crystals 



9. Yellow Copper, in Six sided Plates with Spathose 



Iron (Carbonate of Iron), on Quartz, from 



"Wheal Tolgus, near Redruth 



10 & 11. Two varieties of Tennantite, from the 

 Neighbourhood of Redruth , 



12. Crystallized Red Oxide of Copper 



13. CrysocoUa (Botryoidal) 



14. Arseniate of Copper in Octohedral Crystals. . 



15. Arseniate of Copper in Capillary Crystals, upon 



an earthy matrix, apparently invested with 

 Oxide of Manganese 



16. Native Copper and Malachite, in Serpentine, 

 from the Neighbourhood of the Lizard 



17. A very rich Stone of Tin (massive Oxide) 



1 8. Sparable tin, from the Neighbourhood of H elston 



19. Oxide of Tin, in Quadrangular Prisms, of which 

 the edges are truncated, with mica in six sided 

 plates, upon a matrix of very hard granite, from 

 St. Michael's Mount 



20. Tin in Concretions (Toad's Eye Tin) 



21. Wood Tin in Veins ; in Feldspar 



22. Wood Tin m Pebbles— Stream Tin (near 

 Penzance) 



23. Carbonate of Iron in Six sided Plates, with 



minute Crystals of Phosphate of Lead 



24. Carbonate of Iron in acute angle Rhomboids, 



upon Quartz, from St. Just (Roscagel Mine). . 



25. Carbonate of Iron, in Prisms, with Iron Pyrites, 

 upon Stalactitic Quartz, from St. Just 



26. Haematite (Black) Fibrous Black Oxide of Iron 

 Blistered Iron 



27. Black Haematite, slightly coated with Chalce- 



dony, with Opal, from St. Just 



Dr. Williamson, 

 (President) 



