440 TABLE III. FOR DETERMINATION OP MINERAL*. 



§ Insoluble : rames before the blowpipe on charcoal 



Hardness. Sp. gr. Cleavage. 



Red silver ore, 327 2-0—30 5-4— 5'9 Imperfect. 

 Cinnabar, 287 2-0—2-5 7-8—8*1 Hexag. perfect 



Smithsonite, 272 5-0 4-3—4-5 Rhomb, perf. 



2. Luster metallic. 



* No nmea Vta >~e the blowpipe on charcoal. 



Graphite, 91 1-0—2-0 2-0—2-1 Foliated! 



Ilmenite, 241 5-0 — 6*0 4-4 — 5-0 Indistinct. 



Specular iron, 237 5-5—6-5 5-0 — 5-3 Indistinct. 



t Fumes before the blowpipe on charcoal. 



Molybdenite, 217 1-0—1-5 4*5—4-8 Foliated !! 



Native tellurium, 219 2-0—2-5 5-7—6-1 Imperfect. 

 Dark red silver, 327 2-5 5-7 — 5*9 Imperfect. 



Cinnabar, 287 " 7-8—8-1 Hexag. perfect. 



Native antimony, 222 3*0 — 3*5 6*6 — 6*8 BasaL perfect* 



rhombohed. dist. 

 Native arsenic, 225 3*5 5-6 — 6-0 Imperfect. 



Magnetic pyrites, 233 3-5—4-5 4-6 — 4*7 Basai **exag. pri* 

 Copper nickel, 263 5-0—5-5 7'3— 7*7 



