49 
uran; the protoxide of uranium, called pitch ore , 
massive, pure, and with adhering* ochre of the 
same metal;—the substance called uranite , or 
uran mica (which, according to Berzelius, is no 
pure oxide of uran, but a uranate of lime), in 
groups of emerald-green and yellow colours. The 
ores of tellurium or sylvane,which are divided into 
native tellurium, white and yellow (containinggold 
and iron) ; the graphic ore so called on account 
of the disposition of its minute laminar crystals 
into groups that bear a distant resemblance to 
written characters; and the black or Nagyag ore 
(commonly alloyed with gold and some lead). 
Case 49. The greater part of this case is occu¬ 
pied by the ores of manganese, viz*—oxides : radi¬ 
ated grey manganese, some varieties of which re¬ 
semble the radiated antimony in the disposition of 
their acicular crystals; foliated grey manganese; 
compact manganese of various forms, botryoidal, 
tubercular, reniform, &c.; earthy grey manga¬ 
nese, a remarkable variety of which is the black 
wad of Derbyshire and Devonshire, which has the 
property of inflaming spontaneously when mixed 
with linseed oil.— Silicates of manganese : the red 
compact varieties from Siberia (Werner’s mangan- 
spath), and from Kapnik (the red manganese of 
the same mineralogist).— Carbonate of manganese , 
phosphate , &c.—The helvine , referred by some 
mineralogists to Bournon’s crichtonite, from 
which, however, it appears essentially to differ. 
e In 
SALOON. 
Nat. Hist. 
