STUDII SULL’ IDOCRASIA DEL MONTE SOMMA 
287 
Quadro N. 11. 
Cristallo N. 13 (II Tipo), fig. 42. 
Angoli delle normali 
alle facce 
Differenza 
degli angoli 
calcolati 
Angoli delle normali 
alle facce 
Differenza 
dagli angoli 
calcolati 
Zona [100, 110) 
(331) (HO), 
24° 05' 
// 
00 
— H 
0 
/ 
25 
(100) (110) 
45' 
08 
00 
0 
08 
(HO), (HO), 
00 
14 
00 
(110) (010),? 
45 
00 
00 
0 
00 
(HO), (HO), 
00 
05 
00 
(010), (010),! 
00 
11 
00 
(HO), (IH) 
52 
55 
00 
0 
07 
(oio), (Ho) 
44 
57 
00 
— 
0 
03 
(IH) (001), 
37 
01 
00 
— 
0 
11 
(iio) ( 2 io) 
18 
31 
00 
-+- 
0 
05 
(210) (100)! 
26 
24 
00 
— 
0 
10 
(100) (210) 
26 
15 
00 
— 
0 
19 
Zona [001 
HO] 
(210) (HO),! 
18 
40 
00 
-4- 
0 
14 
(001) (111),? 
36 
35 
00 
— 
0 
37 
(HO), (HO), 
00 
04 
30 
(Ili), (111),! 
00 
24 
00 
(HO), (120) 
18 
05 
00 
— 
0 
21 
(111). (HO) 
52 
51 
30 
— f- 
0 
03 
(120) (010) 
26 
41 
00 
H- 
0 
15 
(110) (III) 
53 
02 
00 
H- 
0 
14 
(010) (100) 
90 
05 
00 
— t- 
0 
05 
(III) (001) 
37 
05 
00 
— 
0 
07 
(001), (001), 
00 
05 
00 
(001), (III) 
37 
06 
30 
— 
0 
06 
(IH) (111), 105 
37 
30 
H- 
0 
01 
Zona [001, 110] 
(111). (HI), 
00 
19 
30 
(001),! (001), 
00 
12 
00 
(IH), (001) 
36 
52 
00 
— 
0 
20 
(001), (113)? 
13 
27 
30 
— 
0 
45 
(113) (111) 
22 
23 
30 
— t— 
0 
23 
(111) (110) 
53 
03 
00 
-+- 
0 
15 
Zona [001 
010] 
(110) (111) 
52 
53 
0( 
— f— 
0 
05 
(001) (010)! 
90 
00 
30 
0 
00 
(IH) (001) 
37 
00 
00 
— 
0 
12 
(010) (001), 
90 
03 
00 
0 
03 
(001) (III), 
36 
51 
00 
— 
0 
21 
(001), (00i) 2 
00 
03 
00 
(III), (IH) 2 
00 
17 
00 
(001), (010) 
89 
45 
30 
— 
0 
15 
(III), (331)? 
28 
36 
00 
0 
30 
(010) (001) 
90 
04 
30 
0 
04 
