FOREIGN ORES. 
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grouped samples of Molybdenite from Bohemia, Greenland, and 
Chile : these are followed by some Saxon specimens of the 
uranium-ore called P Itchblende, and by the peculiar Swedish 
mineral known as Cerite, in which are associated the silicates of 
the rare metals, cerium, lanthanium, and didymium. 
Tin. 
Case 20. — In the small group of foreign tin ores here inter- 
calated, will be found some tine crystals of tin-stone from 
Brittany, and several specimens from the tin mines of the 
Erzgebirge or Ore Mountains, which separate Saxony from 
Bohemia; and with these are placed samples from Spain, 
Russia, Greenland, Brazil, and the United States. 
Following the tin ores are some specimens of the tungstate of 
iron and manganese, called Wolfram , a mineral with which the 
ores of tin are commonly associated ; and of the tungstate of 
calcium named Scheelite, after the Swedish chemist Scheele. 
Cobalt and Nickei, 
Case 20. — The group of cobalt and nickel ores present some 
interesting specimens, chiefly from the mines of Schneeberg in 
Saxony and Tunaberg in Sweden. The white cubic crystals of 
Smaltine, with faces frequently curved and fractured ; the pale 
yellow crystals of Cobaltine, exhibiting compound forms allied 
to those of iron pyrites ; and the pink crystalline or earthy 
Erythrine , occurring frequently as an incrustation on other 
ores, are the most prominent among the cobalt minerals ; whilst 
in the group of nickel ores attention may be directed to a small 
crystallised specimen of Kupfernickel , some fine capillary 
crystals of Millerite, a sample of Breithauptite or antimonial 
nickel, and the fine emerald-green incrustations of Texasite or 
carbonate of nickel from Pennsylvania. The beautiful green 
minerals from New Caledonia, known as Gamier ite and 
Noumeite, are hydrated silicates of nickel and magnesium. 
Antimony. 
Case 23. — The series of antimony minerals, placed on the 
upper shelves, commences with some specimens of the native 
metal, and of its oxides — Valentinite and Benamnontite. Of 
the principal antimony ore, called Antimony glance or stibnite, 
numerous specimens are exhibited from various localities ; those 
from Hungary being remarkable for their fine crystalline forms, 
whilst the Borneo samples are interesting as representatives 
of a very important locality. It will be observed that some of 
the specimens are invested with a yellow crust of oxide of 
antimony, whilst others are coated with the reddish oxysulphide 
called Kermesite or antimony blende, of which mineral some 
specimens are exhibited from Braunsdorf in Saxony, showing 
well the characteristic tufts of red hair-like crystals. 
