metals. 87. Plumbum. 
285 
aim ^ OreenKh-vellow, without luftre, bubbling and emitting 
‘ ’ arfenical fumes before the blowpipe, and cryftallizing 
on cooling. 
Fouroov antialdt chem. a. 1780- p- ^ 9 - 
Arfenico-pholpi.orated lead. Kir-r^an mineral, z. f. 210. 
Arfenko-pholphatoflead. Thpmfn cbeni. 4 , p 2 , 0 . 
Found at rlu-vergne n !^ra-ce, m mafle^, or ■ r ftalbzed m 
■ fmall 6 ftdcd 'prifms: colour yellowifh green of various 
lhades: frafture fi' rou«, ftriated, or conch I 'al : before the 
biowpire it melts eafily with efFervclcence, emitting a white 
fmokLnd arfenical fmell : fFecific gravity 6,846 contains 
arfcniate of lead 65, pholphatc of lead 27, pholphatc ol non 
5, water 3. Fourcroy. 
arunUatum Without Utftre, melting before the blowpipe but npt cryf- 
tallizing on cooling, cmittmg arfenical fumes wptn 
heated to whitenefs and leaving a bead of lead. 
Praup. yotirn tie Phy. 30. p. 394 * 
Arfenicated lead ore. Kirn.uart miner. 2 p. 209. 
Arfeniat of lead. Fhompn chem. 4 7. 80. _ 
Found in the mines of Pmgandy and rIndaMa, in quartz 01 
' feldfpar, and ip fmall mafle, : colour pale green or yellowiih- 
green, with a waxy lullre : when thrown on hot coala it 
cafily becomes white. 
Without luftre, before the blowpipe emitting arfenical and 
fulphuric hame a> d vapours. 
,r oxyde of l«d co,n. 
bined with the arlenicul and ialpt.unc acids. 
Wl.itilh without luare, quite fixed, eafily melting_;before 
xitnolatum W . without decrepitation or eftervefeence, 
not effervefeing with acids. 
Gadohn chem. annul. 1778. 1. 147 - 
Proufi Journ de phyh 1787 «■ A 394 - 
Vitriol of lead. Ki'nu.-an mineral 2 p. 211. 
Vitnolatcdlcad. Sekmeipr miner, z. p. i^u 
Sulphat of lead. ‘Ihmjonchcm Ar-p-n- , 1 . 
Fniind in the lead-mines of l^irontiau m Scotland, in Angkfea. and 
AndaluFta, lometimes variouHy modified, biu generally m 
very minute cryftds, and moftly above the beds ot ga'cna 
from the decompofition of which it feerns to originate : co- 
lour white or grey, more or lefs peUucia : fiacfure compaa 1 
it is partly foluble in water, and is foon reduced before the 
blowpipe: ipecific gravity 6,300. contains oxyde of lead 
yt,p (ulpluiric acid 24.8. water 2,0. ojtydc of iron i,Q, 
JdJapTOtb. 
duple 
lex. 
