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JG LA bu YIN J mm 
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A N:o 1) Igneous Rocks of Sviatoy Noss in Transbaikalia. 47 
grains. The garnet sample was afterwards shaken with cold 
hydrofluoric acid, in which it is only slowly soluble; thus 
some impurities, still possibly present, were removed. By 
a microscopical examination the samples were now found 
to be very free from alien minerals except minute inclusions 
of titanite and epidote. In the garnet, the titanite inclusions 
are rather numerous and no doubt have some influence on 
the analytical figures. The pyroxene contains, besides titanite 
and epidote, also some green hornblende which is homoaxially 
intergrown with the pyroxene, as will be described on the 
following pages. | 
- The rock-analysis gave the results as follows: 
Mol. Mol. 
| | JA FN oj. Norm | 
; I 
SiO, | 58.55 976,:)- 04.942 | Quartz' iö, ds se ses 1.92 Ql==r1902 
A1,Og; | 15.62 | 153 | 10.18 | Orthoclase. ....... 0 
Fe,O; | 3.02 19. l FATT LER ör R 42.97 HS 5:02 
FeO 2.57 36 |; 212 | Anorthite .... .. 
MnO | 0.17 0 J 3 sal 77.23 
MgO 1.14 28 | 1.86 CaSiO, 4.29 
CaO | 7.34 | 1311 872 | Diopside . . y MgSiO, 2.80 5:28] 
Na,O | 5.11 82 | 5.46 i. föl p=14:78 
K,O 4.16 45 | 2.99: | Wollastonite. . . . ... 6.50 J 
TiO, | 0.92 11 | 0.73 | Magnetite ....:.. en) ; 
M = 6.08 
P,O; | 0.49 Ar lim en ite ond ms RN. 1.67 
H,0 ÖRON SEEN AD a täten sa 1.34 A= 1.34 
; Zz fem 22 20 
| SEGE 99.34 
| 99.35 | [100.00 | 
A kerose (II, 5, 2, 4,), near Mo nzon os e. 
The Osann figures 
S A E (AREVA C f n k 
Hr ANETTE ORK Sr6:4055-0:96 
