metals. 82. Argentum. 
253 
fragile. 
Of a black lead-colour, without metallic luftre, opake, 
ealily melting with fulphuric flames and vapours, 
brittle. 
Roefcheewaecbs. Vogel, mineral f. 445. 
Antimoniated lilver ore. Khwan mm 2. /. tx8. 
Brittle filver ore. Schmnpr miner. 2 p. 50. 
Antimoniated fulphuret. Thomfon chem. 4 p. 27. 
Found in the mines of Dauphigny, Saxony, Bohemia, Hungary 
and Siberia, and rcfetnblcs the laft except in bci-g rendered 
brittle by an admixture of iron and antimony : colour iron- 
erey, azure or dark blue when tarnilhed, w th little metallic 
luftre, and of a compact texture : it is generally found maf- 
five or diffeminated, fometiines cryflallizcd in indiftmftand 
accumuUted 6-tided prifms, or tables, or rhombs: before 
the blowpipe the fulphur and antimony evaporate, leaving a 
button, which may be feparated from the iron by fufion wnh 
. nitre and borax: fpecific grwuv 7,208: contains filver 
66,1;. fulphur 12,0. antimony 10,0. iron 5,0. iilicai,o. 
arfenic and copper 0,5. Klaproth. 
Shiiiina, of a lead-colour, ponderous, lamellar, brute, 
eatily melting. 
Renomanx. oj alt Gab. p. 137. . 
Cupriferous fulphurated filter, Kirwan 2. A I 2 i- 
Cupriferous fulphuret. 'Thomfon chem- p 2 S. ^ 
Found in the Korbolokinhl mountains n't Siberia, m the fiflures 
’ of hornflone rocks, in irregular lumps of various lizes: its 
oowder when rubbed betwem the thumb and finger gives a 
black colour to the fkin with a kau glofs : when heated pait 
is'firft fuled and refembles fulphur ited filver, the remainder 
is of much more difficult fufibility and refembles black cop- 
cer- it communicates abluecolour to nunc acid, and when 
diflblved in it depolits fulphur: contains about filver 42. 
Ipper 21. fulphur 35 - Uomfon. 
Xvhrum. 
Ponderous, red when feraped, a little fliining internally, 
^ decrepitating in the fire, and afterwards melting with 
an arfenical fmelL 
Argentum rubefcans. Syfl.nat. tfft. 3. A 149 - «• A 
ArLntnm fulphure, &c. ' Cronft. rnn./elt 169. 
Arlentum arfenico mineralif. Wall fyii. z. 333- »• 4 - 
Argentum fubrum. Wolter/d. mm. 
, Of a colour between blood and cochineal-red. fomettmes van- 
egated: ftreak orange-red: powder black. 
Silver with antimony, &c. Schmetfer mtneral 2. /. 5 S, 
