122 



CarlDonate. 



Bismiithine. 



LiUianite. 



Uase I 



Cliromite.' 



Crocoisite. 



Case 90. 



PvrolusiLe, 



Queensland (Mount Shamrock, Eul<aluuda), Tasmania (Bell 

 Mountain, where it is associated with tinstone). 



From Queensland (Eukalunda, where it is accompanied Ly 

 pyrite), South Australia, Tasmania, Cornwall, Saxony. 



6277, Fowey Consols Mine, Cornwall (the best specimen in 

 the Museum) ; acicular crystals of hismufhine bridging across 

 cavities ; copper pyrites is present. 



7247, Mount Black, Tasmania; in small needle-crystals, 

 associated with copper pyrites, fluor, and quartz. 



8685, Altenberg, The Erzegebirge, Saxony ; lining a crack 

 traversing granite — the variety known as zwitier. 



4559, Ukalunda, Queensland ; good crystals. 



Sulphide of lead and bismuth, 10366, Mt. I'arrell, Tasmania. 



CHKOMIUM. 



Is extensively found in Kew Caledonia, occurring, as usual, in 

 irregular masses in serpentine. The deposits are represented by 

 specimens of the ore and of the country rock. Although a black 

 miceral, it sometimes reddens on Aveathering (8842). Xevv^ 

 Zealand, Queensland, Norway, Canada, and Hungary are also 

 represented. 



The combination of chromium with lead and oxygen, known 

 as crocoisite, is perhaps the most beautiful mineral in Nature. 

 The exceedingly handsome specimens from the West Coast of 

 Tasmania, and the delicate crystals, of elongated habit, with 

 perfect terminations will be admired by all. The beautiful 

 blade-like crystals are very fragile and will not bear handling. 

 Eussian specimens are also exhibited. 



MANGANESE,! 

 Soft crystalliced peroxide of manganese. Q.ueensland, Canada, 

 Eussia, Andalusia, Thuringia. 3540 and 607, Nova Scotia, show 

 the acicular ci'ystals well. 



* For uses of chromite, see page 8S. 

 J For descriptions and uses of manganese ores, see page 87. 



