METALS. 89. Zincum. 
290 
Carbonat of zinc. Thomfan r^htm, 4. p, 87. 
Found in Flintjlnre and Soinsrfetjhire, Canuthia and Si'6e>'i‘^’ 
fometimes in folid niafl'es, fomecinies llalaflitical or cryd^^' 
lized ; colour grey, with often a tinge of blue, green or yu'" 
low : it differs from the next in not gelatinizing with acids- 
contains oxyde of zinc 65,2. carbonic acid 35,2. Smith/on. 
u/iceum. White, fibrous, feparating into concentric concretion^? 
glatinizing with acids. 
Found at WanUd head in Scotland, and difi'ers from calamine i'’ 
containing frequently one-third part of filica : all the fpeci^s 
Vihich contain filica are more or lefs ekdlric by heat, 
spatosum. Lamellar, diaphanous, decrepitating fomewhat before th® 
blowpipe but not emitting fiilphurous vapours, of ^ 
common or globular form. 
Spatous calamine. Schmeijjer mineral. 2. p, 192. 
Zinc fpar. Kir<vcan mineral, z. p.zo,(i. 
Found in Kottinghamjhire, jiufiria, Carinthia, See. colour whit^ 
with often a mixture of greenifh, ycllowiih, reddifli or black' 
ilh : it always contains fome filica, but not in fuch abundanc* 
as to caufe it to llrike fije with fteel. 
crystallinum Lamellar, diaphanous, decrepitating fomewhat before til® 
blowpipe but not emitting fulphurous vapours, of * 
cryftalline form. 
Zincum crylfallifatum. Syji. nat. xii. 3. />. 123, n. i. 
Zinc fpar. Kirnuan mineral. 2. p. 236. 
Spatous calamine. Schmeifier miner, z. p. igz. 
Found with the laft, of which it is only a cryftailized variet;^- 
the ciyJlals are fometimes dillinft but oftencr confufed, 
rhomboidal 4 fided prifms or reflangular 4 or 6.fided plate*' 
or prilms or pyramids varioufly modified. 
Calamina- 
ris. 
Soft, tinged with fome colour, of a common form 
earthy texture, opakc, w'iihout luftre, totally folubl® 
in nitric acid. 
Zincum fubterreum Syst. nat. xii. 3./. 126. ». 5. 
Zincum tcrrellre. IFall. Jyli. z. p 216. ». 3. 
Lapis calauiinaris. Kirnxan miner, z. p. 239. 
Oxyd of zinc. Calamine. Schme furtniner. 2. 191, 
Calamine. Thomfon them. 4. p. 86. 
Found in various parts of Great Britain, AW ^pain, Pala*y 
^ile/ia, Saxo-y, Bohemia, Audria, ke. maflive, difleminat^’ 
or varioufly imitative: colour grcyifh, greenifh, y-llow'u'' 
reddifh, or brownifh: fraflure earthy, fometimes fplinteO’ 
rarely conchoidal : before the blowpipe it decrepitates b'.’ 
does not melt, and fometimes eEFervefees with acids: fpect^^ 
