48 
SALOON. 
Nat. Hist. 
rious crystalline and other forms^ among which are 
the pseudomorphous crystals of carbonate of zinc, 
derived from modifications of calcareous spar. 
(Case 45.) Ores of tin, of which we have the sul- 
phuret of tin, or tin pyrites, and the oxides, which 
are divided into common tin stone, and wood tin:— 
tin pyrites^ hitherto only found in Cornwall, nearly 
pure, mixed with copper pyrites. See.; —among the 
specimens of common tin stone are, the regular and 
macled crystals, the pebble-like, and granular tin stone 
(shoad tin, stream tin, grain tin,&c.;) and the greyish 
white crystals, resembling scheel ore, or tungstate 
of lime; the tin stone from Finbo, in Sweden, 
which contains oxide of tantalum.—The ores of 
tungsten, which generally accompany those of tin, 
are— wolfram (scheelin ferrugineux Hauy\ cry¬ 
stallized and massive, from Bohemia, &c.; and the 
tungstate of lime, scheel ore (scheelin calcaire 
Hauy), among the crystallized specimens of wdiich 
is the primitive acute octohedron from Allemont 
in Dauphin A—In this case are also placed the spe¬ 
cimens of molybdena, or sulphiiret of molybdenum, 
which should not be confounded with graphite; 
the yellow powder on feldspar, from Westmania in 
Sweden, is oxide of molybdenum, 
[Case 46.) Part of this case is occupied by the 
ores of titanium, vi%. the oxides, called tit unite, 
brown-ore, brunon, (sphene, and titane siliceo-cal- 
caire Haiiy,) among the varieties of which is that 
in 
