TABLE I. FOR D 





Hardness. 



Celesiine, 



110. 3^0—3-5 



Heavy 6par, 



ioe. 



Hsulandite, 



164. 3-5—40 



Stilbite, 



165 3-5—40 



Schiller spar, 



148. " 



Chabazite,* 



169. 4-0—4-5 



Harmotome» 



Tungstate of lime, 219. " 



Apophyllite, 



165. 4-5—5 



Monazite, 



206. 50 



Pyrochlore> 



208. 50 



Sphene, 



211. 50 



Scapolite, 



180. 50—60 



Hornblende,! 



152. * 



Pyroxene,1 



150. « 



Lazulite. 



131. 5-5—60 



FOR DETERMINATION OF MINERALS. 421 



III ; mas, fib, lam ; G 3-8 — 4 ; w, bh, rh ; vit, res ; 

 trp, strl : Bl, fus, decrep ; phosphoresces. 



III ; mas, fib, lam, G 4-3 — 4-8; w, gyh, ywh, bn$ 

 vit, p'ly, res; trp, strl: Bl, fus, decrep. Strat, 

 prim. 



IV ; fol ! fol brittle ; G 2'2 ; w, rdh, gy, bnh -, ply 

 vit; trp, strl; acids sol, except silica: Bl, fus, 

 intum, phosphorescent. ' Amyg, prim. 



Ill ; fol ! rad, div ; G 2-1—2-2 ; w, ywh, rh, bn ; p'ly 

 trl, strp ; nit, silica deposited : Bl, fus 1 intum 

 colorless glass. Amyg, prim, Sec. 



Mas, fol ; fol brittle ; G 2-5 — 2-7.; dark gn, or sub 

 met: Bl, fus dif 1! gives off water. 



VI ; in rbdns, nearly cubes, and complex smai 

 crystals ; G 2 — 2-2 ; w, rdh, ywh ; vit ; strp, trl 

 mur, silica deposited : Bl, fus ! blebby enamel. 

 Amyg, vole, prim. 



Ill ; crystals often crossed ; G 23— 2-5 ; w, rdh ; 

 vit ; strp, op ; mur, silica deposited : Bl, fus, clear 

 w glass ; phosphoresces. Amyg, prim, etc. 



II ; mas ; G 6—6-1 ; vit, res ; ywh, w ; strp — op ; 

 nit, becomes y w, but is not dissolved : Bl, fua 

 dif!! decrepitates. Prim. 



II ; glassy cryst ; transverse cleav ; G 23 — 2-4 ; W ; 

 gnh, ywh, rdh ; p'ly, vit ; trp, op ; nit, sol, but 

 hardly gelat : Bl, fus, exfoliates. Amyg. 



IV ; imbedded cryet, one cleavage ! G 4-8 — 5-1 ; bn, 

 bnh-r ; vit, res ; strp, op ; brittle ; mur, decom- 

 posed : Bl, fus dif!! Prim. 



IV; imbedded oct cryst; G 3-8 — 4-3; yw, ywh; 

 res, vit; St slightly colored; trl: J5Z,fus dif J! 



IV ; usually in acute, thin crystals ; G 3.2 — 3-5 ; bn, 

 y w, gy, bk ; res, ad ; strl, op : Bl, fus dif t hot 

 yw glass. Prim, gran limestone, etc. 



II ; mas ; subcol ; G 2*6 — 2-8 ; w, gyh, rh ; vit, p'ly-, 

 trp — op : Bl, fus. Prim, gran limestone. 



IV ; fib, rad ; mas ; (some var fib like flax "» G 2-9- 

 3-4 ; gn to bk and w ; vit, p'ly ; trp, op : Bl, fas, 

 or dif! fus. Prim, trap, trachyte, etc. 



IV; fib ; mas ; cleav ; G 3-1 — 3-5 ; gn to bk and w, 

 vit, p'ly ; trp— op : Bl, fus ; glassy globule. Prim, 

 basalt, vole, etc. 



IV ; mas ; G 3 — 3-1 ; pure b, gnh-b ; vit ; strp— op : 

 Bl, fus, bor clear glob. 



* The var. Gmelinite gelatinizes in acids. 



t Some fibrous varieties (asbestus) of hornblende and pyroxene are quite soft, 

 and resemble those of serpentine • and others are like flax, or have nearly tfc» 

 texture of felt 



