RUTILITE. 

 sylvania. Horcajuelo, near Buitrago, in 

 Spain. Gangehansel, near Petschau in Bo- 

 hemia (massive). Xear Brevig, in Norway, 

 in gneiss. The Ural. Massachusetts, and 

 other parts of Xorth America. Canada. 



Name. From rutilus, signifying shining 

 red. 



Brit. Mus., Case 37. 



31. P. G. Principal Floor, Wall-cases 

 13 (British) ; 20 and 42 (Foreign). 



For varieties of Rutile, see Ceispite, 

 Gallicinite, Ilmexorutile, Xigkine, 

 Sagexite, Titane Oxyde Chromiferk. 

 See also Dianium. 



EuTiLiTE, Jameson. See Sphene. 



liYACOLiTE, G. Rose. Occurs in thick 

 tabular, or short prismatic crystals, re- 

 sembling Glassy Felspar, of which it may, 

 possibly, be only a variety. Colour white or 

 grey, -with a vitreous lustre. Transparent 

 or translucent. H. 6. S.G. 2-618 (i?ose). 



Comp. (K, X, Ca) Si +:^1 Si. 



Analysis, by G. Rose ; 



Silica 50-31 



Alumina .... 29-44 

 Peroxide of iron . . . 0*28 

 Jlagnesia .... 0-23 

 Lime ..... 1-07 



Soda 10-5(j 



Potash .... 5-92 



97-81 



BB fuses rather more readily than Adu- 

 laria, and colours the tiame of a more in- 

 tense yellow. 



Decomposed imperfectly by muriatic acid, 

 with separation of pulverulent silica. 



Localities. Vesuvius, in ejected blocks, 

 associated with Nepheline, Augite, and 

 Mica. Lake Laach. 



Name. From pCoci, a lava stream. 

 •Brit. Mus., Case 31. 



s. 



Saccharite, Glocker. Occurs in finely 

 granular masses, with traces of cleavage in 

 one direction. Colour white or greenish. 

 Lustre vitreous. Translucent at the edges. 

 Very fras^ile. Fracture splintery, uneven. 

 H. 6. S,G. 2-668. 



Comp. A hydrated Andesine, or K Si + 



3A1 Si2 + H. 



Analysis, bv Schmidt : 

 SiUca . ' . . . . 58-93 

 Alumina .... 23-50 



SAHLITE. 327 



Peroxide of iron . . . 1-27 



Oxide of nickel . . . U-39 



Lime ..... 5-67 



Magnesia .... 0-56 



Potash 0-05 



Soda 7'42 



Water 2-21 



100-00 

 BB becomes opaque, and fuses only at 

 thin edges : w^ith borax forms a clear glass. 



Localities. The Serpenthie mines near 

 Frankenstein in Silesia, in veins in Serpen- 

 tine. Chateau Richer in Canada, of a flesh - 

 red colour, with Hypersthene and Ilmenite. 

 Name. From (rii.y,x.ao, sugar; from its sac- 

 charine appearance, "resembling that of loaf- 

 sugar, 



Safflorite, Brooke ^ 3Iiller, Haidin- 

 ger. A variety of Smaltine, containing 11 

 to 19 per cent, of iron, from Schneeberg, iu 

 Saxony. (See Chathamite and Eisex- 

 KOBALTKiEs.) H. 5-5. S. G. G-92 to 7*3. 

 Analysis, by v. Kobell : 



Arsenic .... 71-08 



Cobalt 9-44 



Iron 18-48 



Bismuth . , . .1-00 

 Copper and sulphur , , traces 



100-00 

 Sagexite, Sanssnre. (From (r^^'/vxf,, a 

 net.) A reticulated variety of Rutile. 



Sahlite, Werrier. Sahlite, Jameson, 

 Phillips. A greenish-grey variety of Pyr- 

 oxene, resembling Diopside. Massive, w'lth 

 a lamellar structure ; seldom crystallized 

 (see Baikalite). Translucent at the edges. 

 Lustre vitreous, inclining to pearly. Streak 

 white. Brittle. Fracture foliated. ' H. 5 to 6. 

 S, G, 3-236. 



Fig. 369. 



Analysis, from Sahla, by H. Rose : 



Silica 54-86 



Alumina . . . .0-21 

 Peroxide of iron . . . 4 44 

 Peroxide of manganese . 0"42 



Lime 23-57 



Magnesia .... 16-49 



99-99 

 BB fuses, -svith a slight effervescence, to 

 a translucent glass; with borax and sods 

 forms a clear elaas. 



