XIV, Description of a New Ore of Tellurium* 

 By PROFESSOR ESMARK, 



OF CHRISTIANIA, 

 FOREIGN MEMBER OF THE GEOLOGICAL SOCIETY. 



[Read June 16, 1815.] 



XT occurs coarsely disseminated, and crystallized in perfect hex- 

 agonal plates striped on the edges. 



It has the whitish hue of tin. 



Its fracture displays a perfect foliation, but only in one direction. 



It has a strong metallic lustre j a moderate flexibility ; consider- 

 able softness, and feels heavy. 



Before the blowpipe it burns with the colour and smell of tel- 

 lurium, and has the same action with acids. The precipitate by 

 water burns upon charcoal like tellurium ; but after its sublimation 

 a small metallic button remained of the colour of silver, malleable, 

 but too minute for further examination ; for on account of the 

 rarity of the substance, I could only devote a single grain to this 

 examination. 



It is found in the Orndal copper mine, accompanied by copper 

 pyrites, and a small intermixture of sulphuret of molybdenum. 

 The mine is called Mosnap, and has been full of water for several 



