1\H) TABLE I. FOR DETERMINATION OP MINERALS. 





Hardness 



Liuionite, 



239 5-0— 5-5 



Wolfram, 



244. 5-0-5-5 



Chromic iron, 



241. 



pitchblende, 



228.5-5 



Psilomelane, 



259. 50— 6-0 



Columbite, 



243. « 



Yenite, 



245. 5-5—6 



Specular iron, 



218. 5-5—6-5 



Magnetic iron, 



235. ■ 



Franklinite, 



240. 



mam, bot, stalact, mas ; G 39 — 4 ; bn, bkh ; St ywb 

 bn ; strp, op ; no action on magnet : Bl, infus 

 bk and magnetic. 



Ill ; mas ; col, lam , G 7-1 — 7-4 ; gyh-bk, bnh-bk ; 

 St dark rdh-bn ; submet : Bl fus I decrep, bot 

 gn bead. Prim. 



I ; mas ; G 43 — 4-5 ; iron bk, rather dull, brittle , 

 St bn ; often slightly magnetic : Bl, infus ; bor 

 fine gn, fus dif. Serpentine. 



Mas, bot ; G 6-47 ; bnh-bk, velvet-bk ; St, bk ; sub- 

 met ; nit slow sol : Bl, bor gray scoria. Prim. 



Mas, bot ; G 4, — 4-4 ; bh, gyh to dark steel gy ; St 

 bnh-bk, shining; brittle: Bl, infus, bor violet. 

 Manganese ores. 



IE ; mas ; G 5-9—61 ; bnh-bk, bk, often with a 

 steel blue tarnish ; St dark rdh-bn, bnh-bk ; sub- 

 met: Bl. infus, bor fus dif. Prim. 



Ill; mas, col; (J3-8 — 4-1; iron bk, bnh; St gnh, 

 bnh ; submet ; brittle : Bl, fus ; bor bk mag 

 glob. Prim. 



VI ; mas ; G 4 5 — 53 ; iron-bk and cryst brilliant; 

 St r, rdh-bn : Bl infus, bor iron reaction, glob 

 finally mag. Prim, strat, vole. 



I ; mas ; G 5 — 5\L ; iron-bk ; St bk ; strongly mag- 

 netic : Bl, infus, bor iron reaction. Prim, strat. 



I; mas; G 4-8—5-1; iron-bk; St dark rdh bn; 

 slightly magnetic : Bl, infus ; at high heat zinc 

 fumes. Prim. 



t Fumes before the blowpipe. 



Dark red silver, 327. 2*5 VI ; mas ; G 5-7—5-9 ; iron-bk, lead-gy ; St red \ 



met-ad : Bl, fus ! 1 b flame, sulph and antimony 

 fumes. Silver ores. 



Erubescite, 294. 3-0 I ; mas ; G 5 — 5-1 ; pinchbeck-bn, copper-r, bh tar- 



nish ; St pale gyh-bk ; brittle : Bl, fus ; on char 

 sulph odor, glob mag. Prim, strat, with copper 

 ores. 



Copper pyrites, 292. 3-5 — 4-0 II ; mas ; G 4 — 4-2 ; brass yw ; St gnh-bk ; brittle . 

 nit sol, gn : Bl, fus ; on char, sulph odor. Prim, 

 strat, with copper ores. 



Magnetic pyrites, 233. 3-5 — 4-5 VI; mas; G 4-5 — 4-7; bronze-yw, copper-r; St 

 gyh-bk ; magnetic ; brittle ; dilute nit sol : Bl, 

 fus, sulph odor. 



Leucopyrite, 235. 50— 5-5 HI ; mas ; G 7-2—7-4 ; silver- w, steel-gy ; St gyh- 



bk ; brittle : Bl, fus ; on char, arsen fumes. 



Copper nickei, 263. " VI ; mas ; G 7-3— 7-7 ; copper-r ; St pale bnh-bk 

 brittle : Bl, fus ! on char, arsen fumes. Prim 

 usual with cobalt ores 



