184 PHYSIOGRAPHY. 



Smaltine. 



generally pretty smooth; the faces of the cube often curved. 

 Subject to tarnish. 



Lustre metallic. Color tin-white, inclining to steel- 

 grey. Streak greyish-black. 



Brittle. Hardness = 5-5. Sp. gr. =6*466, a cleava- 

 ble variety. 



Compound Varieties. Reticulated and other imitative 

 shapes; the individuals of them being often discernible. 

 Massive : composition granular, individuals of various sizes. 



1. Heated in an open tube, it emits a good deal of arsenious acid. On 

 charcoal, before tbe blow-pipe, it yields a strong smell of arsenic, and 

 melts into a greyish-black pearl, which is magnetic. With borax and 

 salt of phosphorus, it produces a sapphire-blue glass. In powder, with 

 concentrated nitric acid, it immediately developes red fumes, attended 

 with effervescence and the extrication of heat. 



2. Analysis. 

 By STROMEYER. By JOHN. By LAUGIER. 



fr. Riegelsdorf. fr. Schneeberg. fr. Bieber. 



Arsenic . 74-22 . . . 65-75 . . 68-50 

 Cobalt . 20-31 . . . 2800 . . 9-60 . 



Iron . 3-42 (with mang.) 6-25 . . 9-70 



Copper . 16 . . . 0-00 silica . 1-00 



Sulphur . 0-89 . . . 0-00 . . 7-00 



3. It is principally met with in veins, traversing rocks of various ages, 

 more rarely in beds. It is accompanied by ores of silver, or by ores of 

 copper. In beds, it is attended by Mispickel and Copper-Nickel. 



4. It is found in veins, traversing primitive rocks, at Schneeberg and 

 Annaberg in Saxony; also at Freiberg and Marienberg; likewise at 

 Joachimsthal in Bohemia, and in veins in killas, at Wheal Sparnon in 

 Cornwall. The veins of the counties of Sayn and Siegen, which con- 

 tain it, are included in greywacke ; and those of Thuringia and Mans- 

 feld, and of Riechelsdorf in Hessia, in cupriferous shale. It occurs in 

 beds at Schladming in Stiria, at Orawitza in the Bannat, and at Dobschau 

 in Hungary. But a single locality of Smaltine is known to exist in the 

 U. States, which is at Chatham, (Conn.), where it occurs in veins trav- 

 ersing gneiss, accompanied by Mispickel and Copper-Nickel. 



