Cleavage, parallel with the primary form, perfect. Frac- 

 ture conchoidal, uneven. ^ 



Lustre vitreous, inclining to resinous. Color emerald 

 green, also blackish-green, and verdigris-green. Streak 

 green. Transparent . . . translucent. 



Brittle. Hardness =^5.0. Sp. gr. =3*278. 



1. It decrepitates before the blow-pipe, and upon charcoal it becomes 

 black in the exterior flame, and red in the interior one, without melting. 

 It is easily soluble in glass of borax, and imparts to it a green color. It 

 is soluble without effervescence in muriatic acid. 



3. It has been found accompanied by Green MalacJiHa and Calcare- 

 ous Spar, but the nature of its original repositories is hot known. It oc- 

 curs in the Kirghese steppes in Siberia. Minute crystals are said to ac- 

 company the Electric Calamiae of Rezbanya in Hungary, 



DIPLOITE. (See Latrobite.) 

 DIPYRE. (See Scapolitc.) 

 15 



