164 
sicli ni dit selten auch geringe Mengen von Mn und Fe, deren lioliere Oxydation das 
Braunwerden bedingt. 
b) Dichter Bitterspath. 
(Dolomit, Grurhofian.) 
Amorph. Theils dicht, theils zellig. Brucli muschlig. Gelblich, in’s Graue. 
H. 5—5,5. K, 2,8. R C. R < (Ca, Mg). 
11. Calcit. 
a) Krystallisirter Calcit. 
(Kalkspath.) 
C 0,8543. Nadi Zippe’s Znsammenstellung wurden am Kalkspathe bisher fol- 
gende Formen beobaditet. 
nP 
nR 
nR m 
Langere Polk. 
Kürzere Polk. 
Mittelkanten. 
7 2 P 59° 20' 
R 105° 5' 
— 
1 /a R 5/3 
170" 16' 
140° 18' 
50" 12' 
5 / e P 109° 50' 
7 5 R 160° 42' 
— 
7 5 R 3 
162° 35' 
144° 45' 
54° 6 ' 
P 119° 20' 
7, R 156° 2 ' 
— 
7* R 5 
158° 19' 
147° 13' 
56° 6 ' 
2 P 132° 36' 
3 / 10 R 151° 34' 
+ 
7io R 7 
154° 37' 
145° 55' 
61" 36' 
3 P 147° 23' 
7 5 R 142° 45' 
+ 
74 R 3 
159" 24' 
138° 5' 
64° 54' 
7 / 2 P 151° 50' 
7, R 134" 57' 
+ 
% R 2 
164° r 
130° 37' 
67" 41' 
5 P 157° 6 ' 
7 7 R 129° 40' 
+ 
7 2 R 
166° 57' 
125° 53' 
69° 16' 
7 5 R 127 4 39' 
7 7 r 3/ * 
169° 5' 
122° 37' 
69° 45' 
7s R 123° 10 ' 
+ 
7s R 7/3 
170" 29' 
120" 14' 
71° 5' 
7 5 R 115° 7' 
1 
Vio R 9/7 
172" 30' 
116" 59' 
72° 4' 
7 8 R 111 ° 13' 
— 
7, R 7/3 
157" 5' 
110 " 26' 
88 ° 9' 
% R 99° 14' 
+ 
V 5 R 3 
152" 40' 
123" 35' 
90° 20' 
7ô R 97° 11 ' 
1 
V 4 R 5 
146" 10' 
128" 15' 
93° 20' 
7, R 95° 28' 
+ 
R 19/15 
171" 43' 
102° 55' 
88 ° 16' 
7 5 R 90° 55' 
+ 
R 7/5 
168° 1 ' 
102 ° 21 ' 
94" 1' 
7ü R 88 ° 18' 
— 
7« R 7 
141" 41' 
128" 7' 
99° 58' 
u / 7 R 86 " 36' 
— 
VtR 5 
144" 6 ' 
124° 56' 
100° 47' 
*7* R 85° 26' 
- — 
7 2 R 3 
149" 43' 
117" 23' 
102° 25' 
7iR 82" 56' 
+ 
R 
165° 33' 
102 " 6 ' 
97° 57' 
2 R 78° 51' 
— 
2 / 3 R 7/3 
154° 7' 
111° 54' 
103° 4' 
7 4 R 76° 9' 
+ 
R 5/3 
161° 54' 
101° 55' 
103" 52' 
