9a Calcite from Lyon Mountain, type IV, rhombohedral habit 

 with pyramidal modifications. Orthographic projection 

 showing forms: r (2243), 7 (8.8.16.3), A (0443) and v 

 (2131) 

 9b Clinographic projection of same 



10a Calcite from Lyon Mountain, type IV. Clinographic projec- 

 tion showing an element of the compound crystal figured in 

 iob-ioc. Forms: tt (1123), 1^2243), 7 (8.8.16.3), A (°443)> 

 v (2 131), /a (549 1 ), "A: (14-12.26.5) and q: (2461) 



10b Calcite from Lyon Mountain, type IV. Orthographic projec- 

 tion showing a compound crystal consisting of the elements 

 shown in 10a symmetrically disposed in parallel position on 

 a rhombohedron r (1011) of a previous generation 



ioc Clinographic projection of same 



11a Calcite from Lyon Mountain, type V. Orthographic projec- 

 tion showing forms : T (2243), cc (4483), / (0445) A (0443), 

 / (0221), A. (0772^ X (o.ii.n.i),fl (2131), R': (8.4.12. i),q : 

 (2461) and c\ (3471) 



11b Clinographic projection of same 



