434 TABLE III. FOR DETERMIIVATIONOF MINERALS. 



t Fumes before the blowpipe. 



Copper pyrites, 

 Magnetic pyrites, 

 White iron pyrites, 



4-0— -4-2 



4-5— 4 7 

 a 



Nickel glance, 



Mispickel, 



Coballine, 



6-0—6-2 



6-1 



6-2—6-4 



Iron pyrites, 



4-8—5-1 



Smaltine, 



6-4—7-2 



Variegated copper, 

 Dark red silver, 



5-0—5-1 

 5-7—5-9 



Leucopyrite, 

 Copper nickel, 



7-2—7-4 

 7-3—7-7 





B. Streak Metallic. 







* Malleable. 





Native iron, 



Sp. gr. 



7-3—7-8 



Native lead, 



Sp gr. 

 11—12 



Native copper, 

 Native silver, 

 Native palladium, 



8-5—8-6 



10—11 



10—12 



Native mercury, 

 Native platinum, 

 Native gold, 



13—14 

 16—19 

 12—20 



t Not malleable : no fumes when heated. 





Graphite, 



2-21 | Ilmenite, 



4.4—4-8 



% Not malleable : fumes when heated on charcoal. 





Gray antimony, 

 Molybdenite, 

 Gray copper, 

 Vitreous copper, 

 Native arsenic, 



4.5—4.7 

 4.5—4.8 

 4*7—5-1 



5-5 — 5-8 

 5.6—5-8 



Native antimony, 

 Fol. tellurium, 

 White nickel, 

 Vitreous silver, 

 Galena, 



6-6—6-8 

 7-0—7-1 

 7-1—7-2 

 7-1—7-4 



7-5—7-7 



Native tellurium, 



5-7—6-1 



Native bismuth, 



9-7—98 



Brittle silver, 



6-2—6-3 



Amalgam, 



10-5—11 



TABLE III.— MINERALS ARRANGED ACCORDING 

 TO THEIR CRYSTALLIZATION. 



I.— CRYSTALS MONOMETRIC. 

 A. Luster unmetallic. 



* 



* Infusible. 





Hardness. Sp. gr. Clearage. 



Blende, 



269 2-0—3-0 4-0 — 4-2 DodecahedraL 



Chromic iron, 



241 5-5 4-3 — 4*5 Octahed. imperf 



Leucite, 



175 5-5—6-0 2-4—2-5 Ncne. 



Dysluite, 



161 7-5—8-0 4-5—4-6 Oct. imp. 



Spinel, 



160 8-0 3-5 — 36 Oct. imp. 



Diamond, 



80 10-0 Oct. perfect. 



