TABLE I. FOR DETERMINATION 5P MINERALS. 



42' 



Hardness. 

 Nickel glance, 263. 50— 5-5 I ; mas ; G 6—6-4 ; silver w steel-gy ; St gyh-bk 

 Bl, fus I decrep ; sulph and arsen fumes in glasa 

 tube. 

 I; mas; G 6-2 — 64; silver- w, rdh; St gyh-bk; 

 brittle ; Bl, fus ; on char, arsen fumes, bh, glob, 

 mag ; bor blue. Prim. 

 I; mas; G 64— 7-2; tin-w, steel-gy; St gyh-bk 

 brittle : Bl, fus ! arsen odor, gyh bk mag pearl , 

 bor blue. Prim. 

 Ill ; mas ; crests ; G 4-6 — 4-9 ; pale bronze yw ; 

 St gyh, bnh-bk ; brittle : Bl, fus ; on char, sulph 

 fumes. 

 ispickel, 234. 5-5— 6C III ; mas ; G 61 ; silver-w ; St dark gyh-bk ; brit- 



tle : Bl, on char, arsen fumes, and leaves a mag- 

 netic globule. 

 Iron pyrites, 231. 6-0—6.5 I ; mas ; G 4-8—5-1 ; light bronze-yw ; St bnh-bk : 



Bl, fus ; on char, sulph odor. Prim, strat, vole, 

 etc 



maltine, 



/hiteir'n pyrites, 233 



B. Streak Metallic. 

 * Malleable. 

 Native mercury, 287. fluid G 13—14 ; tin-w : Bl, volatilizes. Strat, prim. 

 Native lead, 277. 1-0—1-5 I ; in membranes and glob ; G 11 — 12 ; lead gray ; 



soils : Bl, fus ! ! volatilizes and colors charcoal 



yellow. 

 Native copper, 290. 2-5—30 I; mas, in strings ; G 8-5— 8-6 ; «tpper-r; nit soil 



r fumes ; Bl, fus, colors flame green. 

 Native 6ilver, 323. " I ; mas, capil ; G 10 — 11 ; silver-w ; nit sol : El, 



fus. 

 Native gold, 312. u I ; mas, capil ; G 12—20, pale to deep yw, accord- 



ing to the proportion of silver present ; nit not 



sol : Bl, fus. 

 Native platinum, 308. 4*0 — 4-5 In grains and lumps ; Gr 16 — 19 ; pale steel gy ; hot 



nit-mur sol : Bl, infus. 

 Native iron, 230. 4-0 — 5-0 I ; mas ; G 7-3 — 7-8 ; iron-gy, magnetic. 



Native palladium, 311. 50 — 5-5 In grains, structure rad ; G 10 — 12 ; Bteel-gy, 



silver-w : Bl, infus. 



t Not malleable : no fumes when heated. 



Graphite, 91. 10—20 Mas, fol I gran ; G 2—2-1 ; iron-bk, dark steel-gy ; 



sectile ; soils ; nit, no action : Bl, infus. Prim, 

 strat. 



Imenite, 241. 50^-60 VI ; mas ; G 4-4—4-8 ; dark iron-bk ; slightly mag- 



netic ; strong mur sol : Bl, infus. Prim, vole. 



X Not malleable : fumes when heated. 

 Molybdenite, 217. 1-0— 1-5 VI ; mas, fol ! lam flex ; G 4-5-4-8 ; pure lead-gy 



sectile ; nit, partly sol : Bl, infus-, on char sulph 

 • odor. Prim. 



34* 



