CALAITE. 83 



phiny ; but much finer crystals, some of them half an inch 

 in diameter, have lately been found at Snowdon in Wales. 

 In both places they are accompanied by rhombohedral 

 Quartz; in Dauphiny, besides pyramidal Titanium-ore, 

 also by Crichtonite and Albite. 



BCICKLANDITE. 

 Bucklandite. LEVY. Ann. of PhiL Febr. 1824. p. 134. 



Hemi-prismatic. Combination observed similar to 

 Fig. 16. only that the faces P, contiguous to o, 

 are larger than those marked P. 



Inclination of the faces, according to LEVY, 

 o on d = 103 56'. o on P = 121 a 30'. 



d on d = 70 40 7 . o on tf = 99 41'. 



donp = 125 20'. o on P' = 95 4<X. 



o on p = 114 55'. ' d on P' = 160 24'. 



Cleavage not observable. Colour dark-brown, near- 

 ly black. Opake. It appears to be harder than 

 paratomous Augite-spar. 



It was discovered in small crystals on a specimen from 

 Neskiel mine, near Arendal in Norway, where it occurs 

 with black hemi-prismatic Augite-spar, with pyramidal 

 Feld-spar, and with rhombohedral Lime-haloide. It re- 

 sembles paratomous Augite-spar. 



CALAITE. ' 



SPAR. 



Calaite or Mineral Turquois. JAM. Syst. Vol. I. p. 403. 

 Man.p.318. Calaite. PHILL. p. 79. Calaite. FISCHER. 

 Essai sur la Turquoise. Moscow. 1816. 



Massive : composition impalpable. Fracture 

 choidal. 



