49 
uran; the protoxide of uranium, called pitch ore^ saloon. 
massive, pure, and with adhering ochre of the nat. hist. 
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 oftellurium or sylvane, which are divided into 
native tellurium^ white and yellow (containing gold 
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 inanganese,t^f<^.— 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 
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. 
In 
E 
