TABLE I. FOR DETERMINATION OF MINERAL8. 421 



Hardness. 

 Colestino, 110. 3-0—3*5 



Heavy spar, 108. " 



Heulandite, 



Stilbite, 



164. 3-5—4 



165 3-5—40 



Schiller spar, 148. " 

 Chabazlte,* 169. 4-0— 4-5 



Harmotome, 168. " 



rungstate of lime, 219. u 

 Apophyllite, 165. 4-5— 50 



Monazite, 



>. 50 



Pyrochlore, 208. 50 



Sphene, 211. 50 



Scapolite, 180. 50—6 



Hornblende,! 152. 



Pyroxene,t 150. " 



Lazulite. 131. 5-5—6 



III; mas, fib, lam; G3-8-4|W, bh, rh ; vit, res; 

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



III ; mas, fib, lam, G 4-3 — 48; 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 ; p'ly, 

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

 intum, phosphorescent. Amyg, prim. 



HI ; fol I rad, div ; G 2-1— 22 ; w, ywh, rh, bn ; p'ly 

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

 colorless glass. Amyg, prim, &c. 



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

 met : Bl, fus dif II gives off* water. 



VI ; in rbdns, nearly cubes, and complex smal 

 crystals; G2 — 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 — 61 ; 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 cryst, 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 : Bl, 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 I hot 

 y w glass. Prim, gran limestone, etc. 



II; mas ; subcol ; G 2-6 — 28 ; w, gyh, rh ; vit, p'lyj 

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



IV ; fib, rad ; mas ; (some var fib like flax "^ G 29t— 

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

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



IV ; fib ; mas ; cleav ; G 3-1 — 35 ; 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 the 

 texture of felt » 



