PHYSIOGRAPHY. 



Magnesia 19-40. 



Alumina 2-90. 



Oxide of Iron 12-10. 



Oxide of Titanium 4-00. 



Oxide of Manganese 2-00. 



It is found at Capo di Bove and Tivoli near Rome, ac- 

 companied by rhombohedral Feld-spar, in the fissures of a 

 volcanic rock. 



MESOLE. 



KOUPHONE-SPAR. 



Mesole. BERZELIUS. Edinb. Phil. Journ. Vol. VII. p. 7. 

 Implanted globules, reniform shapes : composition 



broad columnar, radiating from the centre. 

 Colour white, sometimes inclining a little to yellow. 



Faintly translucent. 

 Hardness = 3-5. Sp. Gr. = 2-370. 



According to BERZELIUS, it consists of 



Silica 42-60. 



Alumina 28-00. 



Lime 11-43. 



Soda 5-63. 



Water 12-70. 



It contains generally a little carbonate of lime. BERZE- 

 LIUS gives the formula NS 2 + 2 CS 2 4- 9 AS + 8 Aq. 



It is found in Faroe lining the cavities of an amygdaloidal 

 rock, the first stratum being generally Mesoline, the se- 

 cond Mesole, and having crystals of pyramidal and prisma- 

 toidal Kouphone-spar disposed upon it. 



MESOLINE. 



KOUPHONE-SPAR. 



Mesoline. BERZELIUS. Edinb. PhiL Journ. Vol. VII. p. 7 

 Crystalline coats of a whitish colour on the surface 



