440 TABLE III. FOR DETERMINATION OF MINERAL*. 



§ Insoluble: rames before the blowpipe on charcoaL 



Hardness. Sp. gr. Cleavage. 



Red silver ore, 327 2*0— 3 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. 



* N« umes b'to »-e the blowpipe on charcoaL 



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



Ilmenite, 241 5*0—6-0 44—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 \ 



ihombohed. dist. 

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



Magnetic pyrites, 233 3-5—4-5 4-6 — 4*7 Basal hexag. pr£ 

 Copper nickel, 263 5-0—5-5 7*3— 7'7 



