26 z metals. S4. Cuprum. 
or radiate: fometimes cryftallized in rhomboidal prifms witi^ 
4.fided fummits : it leaves a fky-blue trace, and is brittle-' 
before the blowpipe it blackens, and tinges borax green with 
ciFervefcence : fpecific gravity 3,608 : contains copper 66 to 
70, carbonic acid 18 to zo, oxygene 8 to 10, water 2. 
Pilletier, 
‘viride. Pale verdegris green, foluble in acids without effervef- 
cence, its iblution in volatile alkali becoming bluc> 
without luftre, of a conehoidal texture. 
Found in the mines of Siberia, Saxony, and Norway, fotne- 
times fuperficial, fiymetimes intermixed with other minerals ! 
ppake, becoming black in the fire : of a common form, of 
botryoidal or kidney-form. 
argillosum. Soft, green, Ihining internally, of a conehoidal texture. 
Renonianz. Nach. ni.altaifch. Gebirg. f. 53. 
Argillaceous copper ore. Schmei/ier miner, z. f. i 50. 
Found in the Altaic mountains of Siberia, and adheres to the 
tongue in confequence of its mixture with alumina : colour 
light or dufley-green eor brownifh-green : it may be eafilf 
cut with a knife, and contains from 24 to 30 percent, of 
copper. 
talfosum. Sea-green, very foft, .making a ftreak. 
Renevanz Nach, u. Altai fch. Geb. ^.51. 
Found in the mines on the Altaic mountains o,r Siberia, in the 
cavities or crevices of metallic or aluminar minerals, and ha* 
fmali particles of talc intermixed with it: col :ur fometinic* 
very pale green, and occafionally exhibiting a metallic luftr* 
or tranfparency : its texture lamellar or fibrous in a ftellate 
manner. 
eErugo. Green, giving a blue colour to ammonia, effervefeing with 
nitric acid, ojiake, without metallic luftre. 
Cuprum corrofum. WalUjyft. 2. p. 286. n. 14. 
Green copper ore. Kirwan mineral. 2. p. 131. 
Green copper 01 e. Sebmeifser miner. 2. p. 1 37, 
Green carbonate of copper. Thomfon chem. 4. p. 45. 
Mountain green. Berkenh. eiutl. p. 263. 
>, Soft, brittle, of an earthy or minutely conehoidal frafture. 
Ochra teris. Sy/t. not. xii. ^. p. 192. «. 3. , 
Chryfocolla. Cojl.fofs. too. 
Mountain green. Kirwan miner. 2. p, 134. 
Mountain green. Schmeijser miner, 2. p. 140. 
Common mountain green, ‘Thom/on chem, p. 45. 
