244 PHYSIOGRAPHY. CLASS II. 



Faroe islands in beautiful crystals. The hemi-prismatic 

 species is more frequently found in the Tyrol and in Scot- 

 land than the prismatoidal one, while the reverse takes 

 place in the Hartz and in Norway. It occurs in beautiful 

 varieties in the Vendyah mountains in Hindostan. 



10. PYRAMIDAL KOUPHONE-SPAR. 



Axifrangible Zeolite or Apophyllite (in part). JAM. Syst. 

 Vol. I. p. 384. Pyramidal Zeolite or Apophyllite. 

 Man. p. 151. Apophyllite. PHILL. p. 110. Albin. 

 WERN. Syst. S. G. 37. Apophyllit (in part). LEONH. 

 S. 590. Me'sotype e'pointee. HAUY. Traite, T. III. 

 p. 154. Tabl. comp. p. 48. Apophyllite (in part). 

 Traite, 2de Ed. T. III. p. 191. 



Fundamental form. Isosceles four-sided pyra- 

 mid. P = 104 2', 121 V. Vol. I. Fig. 8. HAUY. 

 a = V 3-125. 



Simple forms. P oo. (o) ; P 3 (c) = 135 59', 

 64 (X; P (P) ; ^ P 3 (e) = 137 55', 612'; 

 4 p 5(6)^160 15', 28 4'; f P 4 (d) = lM 

 44', 38 56' ; P + oo ; P + oo (m) ; [(P + oo) 3 ] 

 (r) = 143 7 48", 126 52' 12". 



Char, of Comb. Pyramidal. 



Combinations. 1. P. [P -f oo]. Fig. 97. Cziklowa, 

 Bannat. 



2. p_ oo. P. [P + GD]. Sim. Fig. 1 1. Fassa, Tyrol. 



3. P. [P + ooj. [(P + oo) 3 ]. Iceland. 



4,. poo. fP5. |P 4. V-ip .3. P a 

 P. [P + oo]. [(P + oo) 3 ]. Uton, Sweden. 

 Cleavage. P CD, highly perfect ; [P + oo] im- 

 perfect. Fracture uneven. Surface, P OD 

 very smooth, shining and even ; P smooth, but 

 frequently curved ; the obtuse pyramids are even, 



