132 
Berechnet. Gefunden. Gefunden. 
(RR) Si (RR) Si R R Si 
s / 3 Muskowit (3a+2b) + 0,28°/ 0 Fl. 1 1,25 1 1,27 1 12,40 17.03 Kali-Glim.,Ochotz.H.Rose. 
1 / 1 do. (a+b) + 1,33°/ 0 F1. 1 1,33 1 1,33 1 5,90 9,20 do. Fundort (?) Rammelsb. 
3 /i do. (a+3b)+0,00°/ 0 Fl. 1 1,60 1 1,56 1 2,70 5,78 do. Fundort (?) Yauquelin. 
VI. Grappe: (RR) 8 Si 5 . 
1. Cordierit. 
(Diciiroït, Steinheilit, Jolitli, harter Falilunit.) 
0,5773 : 1 : 0,5585. 120°; oc P 3 60°; Poe 121° 38'; P 134° 57', 100°, 
96° 50' (Mk.). Spaltbar oc P oo ziemlich deutlieli. Bruch muschlig. Grau, blau, 
braun in verschiedenen Nliancen. Trichroismus. H. 7 — 7,5. G. 2,5— 2,6. (RR) 8 Si 5 . 
R = Â1; R < (Mg, Fe). 
Berechnet. Gefunden. Gefunden. 
Cordierit 
(RII) 
1 
Si 
1 ,25 
(RR) 
1 
Si 
1,20 
R 
1 
R 
2,33 
Si 
4,00 
Cordierit, 
Orrijervfi. Thomson. 
do. 
il 
11 
1 
1,21 
1 
2,08 
4,06 
do. 
Connecticut. Thomson. 
do. 
il 
11 
1 
1,21 
1 
4,26 
do. 
Bodenmais. Stromeyer, 
do. 
il 
11 
1 
1,23 
1 
2,50 
4,31 
do. 
Orrijervfi. Stromeyer. 
do. 
il 
11 
1 
1,19 
1 
2,62 
4,32 
do. 
Unity. Jackson. 
do. 
il 
11 
1 
1,27 
1 
2,53 
4,49 
do. 
Finspong. Schiitz. 
do. 
il 
11 
1 
1,29 
1 
2,84 
4,96 
do. 
Brunhult. Schiitz. 
do. 
il 
11 
1 
1,28 
1 
2,88 
4,98 
do. 
Fahlun. Stromeyer. 
do. 
il 
11 
1 
1,25 
1 
2,97 
4,98 
do. 
Krageroe. Sclieerer. 
do. 
il 
11 
1 
1,26 
1 
2,95 
4,94 
do. 
Orrijervfi. Bonsdorf. 
do. 
il 
* 1 
1 
1,24 
1 
3,07 
5,06 
do. 
Gronland. Stromeyer. 
do. 
il 
1) 
1 
1,30 
1 
3,82 
6,31 
do. 
Haddarn. Jackson. 
VII. G r uppe: (RR [H]) 8 Si 6 . 
a) Typus des Cordierits. 
1. Pinit. 
(Aspasiolith, Gieseckit.) 
Homoomorph mit Cordierit. Neigung zu schaliger Absonderung in der Richtung 
der Basis. Grau, griin, braun. . H. 2 — 4. G. 2,65 — 2,85. (RR [H]) 8 Si 5 . R<(Fe,Mg,K). 
