94 PHYSIOGRAPHY. 



Lime 0-?5. 



Potash 18-00. 



Oxide of Iron 1-00. 



Water 2-00. 



It occurs near Laurvjg, Stavern, and Frederiksvarn in 

 Norway, imbedded in Syenite along with prismatic Tita- 

 nium-ore and pyramidal Zircon. 



EUCAIRITE. 

 GLANCE. 



Cuivre sele'nie' argental. HAUY. Traitd, 2de Ed. T. III. 

 p. 470. Seleniuret of Silver and Copper. FHILL. p. 

 294. Eucairite. BERZELIUS. 



Massive : composition granular. Cleavable. 

 Lustre metallic. Colour lead-grey. Streak shin- 

 ing. Opake. 

 Soft. 



Before the blowpipe it melts easily, and emits the odour 

 of selenium. It is soluble in boiling nitric acid. Compo-- 

 nent parts, according to BERZELIUS, 



Silver 38-93. 



Copper 23-0&. 



Selenium 26-00. 



Foreign substances 8-90. 



It has been found only at Skrikerum mine in the parish of 

 Tryserum in Smaland in Sweden, in a talcose or serpen- 

 tine-like rock, accompanied by rhombohedral Lime-haloide. 



EUCHROITE. 



EMERALD-MALACHITE. 



Euchroite. HAIDINGER. Edinb. Journ. of Science. Vol. 

 II. p. 133. Dr TURNER. Ibid. p. 301. 



Prismatic. P == 119 7', 81 47', 120 54'. VoL 

 I. Fig. 7. AP. 



