METALS. 84. Cuprum. 
265 
.i.h «f "<1 ’“SiTaSSic -"i. S: 
tie and when rubbed emitting the fmell ot ari.nic. 
Si'. ‘Copper, iron, f.lpl."'. “‘I W™.* * WJ' 
Purple Copper ore. Kvivan miner 
Variegated Copper ore. Schmeiffer mm. 2. 1 47 - 
PiirnV ('nnner ore. ^homfon chem. 4. p\ 4°. 
£re’ WuttTeen'i ' ftr^k“rVdd?fh"ard Metallic: texture 
conchoidal, brittle; wit^h nitric acid ","4. 
ir preen deflagates With nitre, and melts betore tn . 
pijr w.’th fmell, fmoke or vapour : /pecific gr-.ty from 
4,956^4,982: contains copper 58, iron 18, fulph 9, 
Oxygenc 5. Klaproth. 
^insreum. 
b 1 . 
Cuprum cinercum. 
Cupr. arfen. lulph. 
Grey Copper ore. 
Grey Copper ore 
Grc) Copper ore. 
Hardifli, brittle, with metallic luftre, compaa, of a fteel- 
erev coloiif. 
^ ^ ■ - Sji/if. »flr. 3 tii. 3 ./>. 144 «• 7 - 
Wall.rJ!t.^ p. 28 i.« 8 . 
Kr-xvan mineral, i. /. <46- 
Schmeifser mrr.er. 2 . p. 148* 
Thom fon chem. 4. 4 .I* 
Kouid i« '"r. 
vanegated : Itrea' dark grey, often reddifh-brown ; 
blackllh, with frequently a tinge of red : ^ith nitre it defla- 
orarer and melts with crack ing before the blowpipe, it 
fin -es’ borax yellowifh or browni(h-red : fpecific gravity 
Z%. onrains whin pure, copper 3., 36. fulp^i-r U, 50 . 
amim% 34.09- ^+’77. 'ton 3.30. almn.na 0,30a 
Klapr 0th. 
tj .-rt raritb metallic luftre, of a lead colour, and con- 
^ “ choidal texture, emitting a difagreeable imell when 
pounded. 
f"™ si' r«*7 1" S/S<~. ssS cor-i". 
45 per cent, of copper and a little filver. 
Ponderous, dull purro,,,ed, r.diu.ed, b.euking into fplin- 
'''..-■‘'“‘“TSlMl'-li , 
(unt. 
