121 



UUmanite, sulpli-antimonide of nickel ; 563, Soutli Australia. 



Aivaruite, a peculiar alloy of iron and nickel found in tlie iron- 

 sands of tlie New Zealand beaches. (3063). 



At the important nickel-producing district of Sudbury, Ontario, Canada, Ontario. 

 the ore is of a very different character to that from New Caledonia. 

 Hei'e it consists of magnetic pyrites {pyrrhotite) containing a small 

 proportion of nickel. Tb e ore is very largely used in Amei-ica for 

 the production of the nickel-steel used in the manufacture of 

 ordnance. Specimens will ulso be found in case 123. 



ARSENIC. Case 89. 



713, Andreasberg (Hartz Mountains); 9096, tlie Thames Native 

 ■Gold Field (New Zealand.) Arsenic. 



Yellow sulphide of arsenic ; Hungary, Portugal, Moldavia Orpiment, 

 (7440), and rtali. 



3402; Sunshine Mine (350 feet), Mercur, Utah ; associated 

 with free sulphur. 



Red sulphide of arsenic, altering into orpiment ; Seattle Realgar. 

 .(Washington, U.S.A.), and Nakety, New Caledonia. 



Arsenical iron pyrites ; Canada, Virginia, Washington, Eussia, Mispickel. 

 Portugal, Saxony, and Cornwall. 



8393 and 8643, Geyer, Saxony ; a radial variety known as 

 gpyerite. 



Samples of osiJe of arsenic, as prepared from Cornish 

 mispickel, are shown. 



BISMUTH. Case 89. 



Prom Queensland (Mount Shamrock), Tasmania, Cornwall, Native 

 and Saxony. ^i^-^yA\. 



8697, G-eyer, Saxony, in quartz ; 8S96, Geyer, Saxony; in 

 Iriplite (the reddish mineral) with quartz. 



8716, Zwitterstock, The Erzegebirge, Saxony ; on the face of 

 a quartz vein traversing granite — the variety known as zwitter. 



Saxony is the principal bismuth-producing district of the world. 



