METALS. 89. Zincum. 289 
Sulphurated nickel. Kirnx:a» mineral 2. p. 286, 
Native nickel. Schmeiffer miner, 2. p 2 '6. 
Kupfer-nickel. ^ homfon them, p, ^\- „ 
Found at irieeo in Cornwall, in Siberia, Sweden, Saxony, 
vary, Bohemia, &c. maffivc or difleminated, never cryftal- 
lized, in a matrix of calcareous or heavy fpar, and often 
coated with nickel ochre : colour coppery-red with variations 
of reddilh white or grey ; texture compaft, conchoidaJ, foli- 
ated or ftriated, with often curved lamellar concentric con- 
cretions: before the blowpipe it exhales an arlenici.l tmell, 
and melts into a bead which eraduaby darkens by expofme to 
the air: fpecific g-av.ty 6,608. to 6.6481 it frequent y con- 
tains bifmuth, cobalt and iron, but always a portion of 
pyrites. 
go. ZINCUM. Brilliant white with a fliade of blue, 
hardilh, a little malleable but not duftile, night- 
ly fonorous, of a fibrous or fcaly texture, fpeci- 
fic gravity 7,120: burning with a brilliant white, 
flarne when heated to a ftrong degree, and emit- 
tino- light white flakes, when tufed with copper 
giving it a brafly-yellow colour: eafily foluble 
in acids, imparting no colour to tne loiudon, 
but depriving it of its acrimony. 
'Xhr, 
'aceum. 
^‘form 
’.’C, 
‘um. 
Powderv, white, without luftre. 
Octira zinci. Syft ^ 9 ^' 5. 
Zincum pulvcrulentum. Wall.Jyii. 2. 222. n. 8. 
T or friable zinc. Kirwan mineral 2 p. 233. , , . , , 
Found in China, Sweden, and Carinthia, in a loofe and friable 
form and foretimes effervefees with acids. In China U is 
ufed.in the formation of the metal called Jutenag. 
Compaa, veryfoft, opake, white, without luftre. 
Minera zinci. Cronft nun. 226, 1 l l I a a ■ 
Found near Workjworth, in iberia, Sweden, Boh mta, Auftna, 
&c of an earti.y or minutely lamellar lonn in erna.ly, fome- 
thnes cellular, nodular, liiklar. or vanoufly imitative: co- 
lour white, fomei mes verging to yellow or gie> : it effer- 
vefees with acids, in which a is alraoll totally diffolved. 
Hard, tranfparent, of a glaffy luftre. 
Carbonate of Zmc. Schme f>er miner. 2. / 
vni. Vll. — O o 
195. 
