PLOMB BLANC. 



Plomb Blanc. See Cerusite. 



Plomb Bleu, Brochant See Blue 

 Lead. 



Plomb Brun. Ser Pyromorphite. 



Plomb Carbonate, Dufrenoy. See 

 Cerusite. 



Plomb Carbonate Muriatifebe, 

 Haily. See Cromfordite. 



Ploimb Chloro-Carbonate, Dufrenoy. 

 See Cerasine. 



Plomb Chlorure, Dufrenoy. See Men- 



DIPITE. 



Plomb CHROMATE^auv» ") c ^ n,,^^^. 

 Plomb Chromat^ I ^'^ ^^Z 



HouGE, Haiiy. ^ J ^"^• 



Plomb Corne, Brochant. See Cerasine. 



Plomb GoMME, LaM/wow^.") c? t> 

 Plomb Hydro- Alumi- t^^^ P^umbo- 



NEVK, Haiiy. J Resinite. 



Plomb Jaune, Brochant. ") ^ -nr 

 Plomb Molybdate, ^ See Wul- 



Baiiy. ^ i ^^^i'^^- 



Plomb Muriate, BrochaJit. See Men- 



DIPITE. 



Plomb Murio-Carbonate, Levy. See 

 Cromfordite. 



Plomb Natif, Haiiy. See Native Lead. 



Plomb Noir. Black Lead. See Gra- 

 phite. 



Plomb Oxide. See Plumbic Ochre. 



Plomb Oxide Rouge, Haiiy. See 

 Minium. 



Plomb Phosphate, Haiiy. See Pyro- 

 morphite. 



Plomb Rouge, Brochant. See Miniusi. 



Plomb Seleniure, Levy. See Claus- 

 thalite. 



Plomb Spathique Blanc, De Born, 

 See Cerusite. 



Plomb Sulfate, Haiiy. See Angle- 

 site. 



Plomb Sulfure, Haiiy. See Galena. 



Plomb Sulfure Antlmonifere, Haiiy. 

 See BouRNONiTE. 



Plomb Sulfure Prismatique Epi- 

 gene. Haiiy. See Blue Lead. 



Plomb Tungstate, Dufrenoy. See 



SCHEELETINE. 



Plomb Verte, Brochant.' See Pyro- 

 morphite. 



Plombagine, or Plombagine Vul- 

 GAiRE. See Graphite. 



PL03IBIERITE, Daubree. A gelatinous 

 substance precipitated by the thermal 

 waters at Plombieres in certain fissures and 

 cavities where the Roman cement is ex- 

 posed to a direct stream of warm water. 

 In the open air it becomes hard, opaque, and 

 white as snow. 



PLUMBO-RESINITE, 293 



Comp. Hydrated silicate of lime, or Ca^ 



Si3 + 2H. 



Plomgosime, Beudant. See Plumbo- 

 Resinite. 



Plumbago, Kirwan, Phillips (from plum" 

 bum, lend). A name for Graphite, from, its 

 leaving a mark, when drawn across paper, 

 similar in colour to that produced in the 

 same way by lead. See Graphite. 



Plumbic Ochre, Dana. Massive. Colour 

 sulphur- or orpiment-yellow. Opaque. Lus- 

 tre dull. Streak paler than the colour. 

 S.G. 8. 



Comp. Protoxide of lead, or Pb=lead 

 92-8, oxygen 7-2 = 100. 



Analysis, from Eschweiler, by John : 

 Protoxide of lead . . . 93*27 



Silica 2-40 



Peroxide of iron and lime . 048 

 Carbonic acid . . . 3'S4 

 Protoxide of copper . . trace 



99-99 



BB on charcoal, fuses readily and is re- 

 duced to metallic lead. 



Localities. Badenweiler, in Baden. Popo- 

 catapetl and Jztaccituall, in Mexico, among 

 volcanic products. 



Plumbocalcite, Johnston. A variety of 

 Calcite, containing a variable quantity of 

 carbonate of lead. Occurs in obtuse rhom- 

 bohedrons. Colour white, yellowish, grey 

 or occasionally pinkish. Transparent. Lus- 

 tre pearl}^ S.G. 2-82. 



Analysis, from Wanlockhead, by Johnston :. 

 Carbonate of lime . . . 92 2 

 Carbonate of lead . . .7-8 



100-0 



BB decrepitates on charcoal; with car- 

 bonate of soda, yields a white enamel, but 

 no globules of lead. 



Localities. — Scotch. Lanarkshire: Lead- 

 hills ; High Pern Mine, Wanlockhead, Dum- 

 friesshire. 



M. P. G. Horse-shoe Case, Nos. 442 

 and 443. 



Plumbo-cupriferous Sulphuret of 

 Bismuth, Phillips. See Aikenite. 



Plumbo-Resinite, Framont. Amorph- 

 ous, or in reniform, globular or stalactitic 

 masses, with a columnar structure. Colour 

 yellowish- or reddish-brown. Translucent. 

 Lustre resinous. Streak white. Fractui-e, 

 conchoidal, and splintery. H. 4 to 4*5. 

 S.G. 6-3 to 6-4. 



Comp. 6A1 H + W P (Damour). 

 u3 



