284 
METALS. 87. Plumbum. 
at lamellar, but mott commonly cryftalliiied in fniall cubic or 
rhombic or 8 lided plates, rarely in 6-fided prifms: colout 
various (hades of yellow with a waxy luilre and generally 
fomewh t tranfparen-, with a white ilreak: frafture con- 
choida’ : before the blowpipe it decrepitates and melts into s 
yellowilh and black (h-grey nufs, producing globu'es of lead: 
fpecific gravity 11,486. contains oX) de of lead 64,42. mo- 
lybdic acid 34,25. Klaproth, 
‘viffm. , Greenilb, ponderous, breaking into indeterminate frag- 
ments and reducible to a yellow powder, nearly folu- 
ble in hot nitric acid without effervefcence, melting 
before the blowpipe and cryitallizing on cooling. 
Plumbum cryftallis, &c. Sfit, vat xii 3. p. 134. «. 7, 
Plumbum ttrreftre. Wall. /'pt. 2. p 308. «. 7. 
Phofphora ed lead ore. Kirvjan min 2. p. 207. 
Phnfphoratcd lead ore. Schmeijfer mineral. 2. p. 1 82, 
Phofphat of lead. Thom/on chem 4 p. 77. 
Phofphate of lead. Stnuerby Br. min. t. 84. 
Found in the lead mines of Great- Britain, Nenv Spain, Siberia, 
Bohemia, Germa.it, Canutbia, &c. tnaHive, dlflcmitiatcd, 
imitative, or cryiialliaed in 6-fidcd columns varioudy modi- 
fied : colour yarious (hades of green, with often a mixture ol 
yellowi(h, grey i(h or redd i(h brown, (hining, femitranipare ti 
with a greenifli-white (break and yellowilh powder: be ors 
the blowpipe jt ipehs eafily, and cryftalliv.e^ on cooling: in 
muriatic acid it is foluble and becomes dccompofed : texture 
foliated, fracluie inclining to conchoidal : fpecific gravity 
from 6,270. to 6,560. a fpectmen from Wauloekhead con- 
tained, oxyde of lead 80,0. pholphoiic acid 18,0. mmiatic 
acid 1,62. Klaproth, 
jaspideum. Brown, hard, opake, of a common form. 
Fichtel karpath p. 348, 
Found near Sajka on the Carpathic mountains, and contains 3^ 
per cent, of lead, and a little filver and gold. 
fulginosum. Black, without luftre, foiling the fingers, not totally folU' 
ble in nitric arid, emitting fiilphiirous flame and V 3 ' 
•pours before the blowpipe, and cryftallizing on cool- 
ing. 
Laumont ap laMeth. fount. 1787. 1. p. 383. 
Found at Freybur^inA in Britany, and belldes oxyde of l»ad and 
phofpho ie acid contains fome fulphur; it may probably b® 
pnly a fulphurate of lead m a decompofing ftate. 
