TABLE I. FOK DETERMINATION OF MINERALS. 423 



b. Colored or odorous fumes before the blowpipe on charcoal. 

 Hardness. 

 Horn silver, 327. 10— 15 I ; mas, like wax ; G 5-5—5-6 ; gy, bh, gnh ; trl, strl i 



sectile ; fus. in candle, yielding odorous fumes 



Silver ores. 

 Mimetene, 284. 27 — 3-5 VI; mas; G 6 4—6-5; pale yw, bnh, bnh-r; strp, 



trl ; hot nit sol : Bl. fus 1 1 on char alliaceous 



fumes. — Lead ores. 

 Scorodite, 249. 3-5—40 HI ; mas ; G 3-1—3-3 ; leek-gn, gnh w, bh, bnh ; ad, 



vit ; strp, strl : Bl fus 1 alliaceous fumes. 

 Blende, 269. ** I ; dodec cleav 1 mas ; G 4 — 4-1 ; resin-y w, rdh, 



wh ; trp, strl ; nit sol, emitting sulph hydrogen 



Bl. on char at a high heat fumes of zinc. 

 Bismuth blende, 221. 3-5—4-5 I ; mas, col ; G 59— 61 ; bn, gyh, y wh ; res, ad 



Bl, fus, w fumes. Prim. 

 Smithsonite, 272. 5-0 VI ; mas, ren, bot ; G 4-2—4-5 ; gyh-w, gnh, bnh 



vit, p'ly ; strp, trl ; nit efferv : Bl, infus ; on chat 



w fumes. Usually with lead ore. 



B. Streak colored. 



a. No fumes before the blowpipe. 



* Fusible. 



Minium, 280. soft Mas, pulv ; G 4-6 ; bright red : Bl, fus ; on char 



glob lead. Lead ores. 

 Vivianite 248. 1-5—2-0 IV; foil lam. flex; mas; G 2-6—2-7; bkh-gn 



dark b ; St, bh-w, b; nit or sul sol : Bl, fus I • 



decrep, dark bn scoria, magnetic. 

 Uranite, 228. 20—2-5 II ; fol 1 mas ; G 3—3-6 ; bright gn, yw ; St, paler; 



p'ly, ad ; trp, strp ; nit sol, no efferv : Bl, fus, 



bk glob. Prim. 

 Cup. anglesite, 281. 2-5—30 IV ; cleav! G 5-3—5-5; fine azure blue; St, paler; 



ad, vit ; trl, strl : Bl, reaction of copper and 



lead. Lead ores. 

 Chromateoflead,284. 2-5—3 IV; mas, col; G 6 ; bright r; St orange; ad; trl; 



sectile ; nit sol, no efferv : Bl, blackens, decrep, 



shining slag. Lead ores. 

 Green malachite, 298. 3-5—4 IV; mam, bot, crust; G 4—4-1; gn; St, paler; 



vit, silky, earthy ; trl, op ; nit sol, efferv : Bl, fus 1" 



bk ; bar gn. Copper ores. 

 Red copper ore, 296. ■ I ; mas, fib ; G 5-9—6 ; deep red ; St, bnh-r ; ad 



submet ; strp, strl ; nit sol, efferv : Bl fus ! on 



char metallic copper. Copper ores. 

 Pyromorphite, 283. " VI ; mas ; G 6-8—7-1 ; gn, bn, gy ; St yw ; res ; 



strp, strl ; hot nit sol, no efferv : Bl fus ! Lemd 



ores. 

 Axurite [300. « IV; mas, earthy; G 3-5—3-9: azure b, dark b; 



St paler; vit, ad; trp, strl; nit efferv: Bl, fus I 



copper reaction. Copper ores. 

 34 



