GENERAL INDEX. 
Platiniridium, 127. 
Pleonaste, v. Spinel. 
Plumbago, 107. 
Plumbie ochre, 149. 
Plumbogumuite, 149. 
Plumose mica, 267. 
Polianite, v. Pyrolusite. 
Polishing powder, 430. 
Pollucite, Pollux, 254. 
Polyargite, 312. . 
Polyargyrite, 120° 
Polybasite, 120, 136. 
Polycrase, 202. 
Polyhalite, 205, 227. 
Polylite, 246. 
Polymignite, 202, 260. . 
Porcelain jasper, 442. 
Porcelanyte, 442. 
Porcellophite, 308. 
Porfido verde antico, 452. 
> Porpezite, 127. 
Porphyrite, 447. 
Porphyritic structure, 415. 
Porphyry, 417, 442, 448. 
Antique green, 452. 
Antique red, 415, 447. 
Porphyryte, 447. 
Portor, 431. 
Potassium, Compounds of, 228. 
Potstone, 304. 
Potter’s clay, 429. 
Pozzuolana, 428. 
Prase, 2385. 
Pregattite, 314. 
Prehnite, 295. 
Priceite, 212. 
Prochlorite, 54, 319. 
Propylyte, 447. 
Protogine, 440. 
Protovermiculite, 318. 
Proustite, 119, 121. 
Przibramite, 159. 
Psammite, v. Sandstone. 
Pseudomalachite, 1389. 
Pseudophite, 318. 
Pseudotriplite, 191. 
Psilomelane, 189. 
Psittacinite, 139. 
Pudding-stone, 426. 
Purple copper, v. Bornite. 
Pyenite, 287. 
Pyrallolite, 295. 
Pyrargillite, 315. 


Pyrargyrite, 119, 121. 
Pyreneite, 208. 
Pyrite, 5, 6, 172. 
Pyrites, Arsenical, 175. 
Auriferous, 1/73. 
Capillary, 164. 
Cobalt, 164. 
Cockscomb, 174. 
Copper, 138. 
Hepatic, 174. 
Iron, 172. 
Magnetic, 174. 
Radiated, 174. 
Spear, 174. 
Variegated, 134. 
White iron, 174. 
Pyrochlore, 202, 214. 
Pyrochroite, 189. 
Pyrolusite, 188. 
Pyromorphite, 151. 
Pyrope, 208. 
Pyrophosphorite, 214. 
Pyrophyllite, 306. 
slate, 455. 
Pyrophyllyte, 455. 
Pyrophysalite, 287. 
Pyrosclerite, 317. 
Pyrosmalite, 296. 
Pyrostilpnite, 120. 
Pyroxene, 245. 
Pyroxenyte, 452. 
Pyrrhopeecilon, 446. 
Pyrrhosiderite, 182. 
Pyrrhotite, 174. 
469 
Quartz, 58, 54, 58, 238, 238, 485. 
andesyte, 447. 
dioryte, 446. 
felsyte, 442. 
propylyte, 447. 
syenyte, 445. 
trachyte, 442. 
Quartzyte, 485. 
Quick lime, 217. 
Quicksilver. See Mercury. 
Raimondite, 182. 
Realgar, 99. 
Red antimony, 101. 
chalk, 177. 
copper ore, 136. 
hematite, 176. 
lead, 149. 
