266 
metals. S4. Cuprum. 
akaUtim, 
plumbeum. 
hertytiicum. 
dalieumrn 
fulvum. 
Reno varfx. <v. Ahuifch. Geh, p. 235 . 
Peacock’s tail Copper ore. Scbmtifser z, p. 147. 
Found in the Altaic mountains of Siberia^ and cont-iins front *5 
to 30 per cent, of copper and a little filvcr. 
Hardilh, with a weak hiftre, hoary, brittle, of a- 
fplintery texture. 
Rem-z’an«. -v. Altai/ch. Geh. p. 235. 
Pound in the mines of Siberia, and contains about the faw® 
proportion of copper as the lall: it tinges ammonia green. 
Of the colour and liiflre of lead, and of a flat texture. ' 
Linck chem. amtal. I 790. i, p. 150. 
Found in the mines of Hercynia, and contains fulphur, coppC* 
iilver, iron, arfenic, and lead. 
Hardifli, with a dull Inftre and dark grey colour. 
Wedrumb chem. annal, 1789. 2. p. 527. 
Found in the mines of the Harz, and contains a conlidcrabltt 
portion of copper, fome antimony and fulphur, a litd® 
iron, a very (mall quantity of fiiver, and neither arfenic nor 
lead. 
With metallic Iiiflre, of a fteel-grev colour, arsd 
(Ireak. ' 
-Argentum arfenico, &-c. Wall.fyst. 2. />. 258. n. 7. a. 
Found in the mines of Sweden and Saxony, and contains 
24, copper I 3 per cent, befides a little antimony and filver- 
Yellow, with metallic fplendour, emitting fulphurous 
flames and vapours when thrown *on hot coals. 
Mundi^'’ 
Cuprum fulvum. Sy/I. nat. xii. 3. p. 144. «, 4. 
Cupr. fulph. ct ferro. Wall. fist 2. p. 282. (*.9. 
Copper pyrites. Kirnxan miner. 2, p. 140, 
Copper pyrites. Themfon chem. 4. p. 39, 
Sulphuret of copper. Sozverby Brit, min. t. 77, 78. 
The moft common ore in the mines of Cornojcall, Ireland, Siberi»> 
Hungary, Stveden, See. in innumerable varieties and propo®' 
tions, maffive, difleminated or cryflallized : colour lig**' 
yellow or greenifh.ycllow, fometimes verging on the 
grey, when tarniftied by the air often variegated with 
yellow, blue, green or red : texture even or imperfefUy coD' 
choidal, rather foft; it deflagrates with nitre, does not «' 
florefee by expofure to the air, nor etfervefee with 
acid: before the blowpipe it decrepitates, gives a grcenilh 
fulphuroiis fmoke, and melts into a black globule whit^^ 
