«EV VIA ER FAN Mal 0, SA OVE KANIN NM 
f 2 ; Br RIE 
> & 2 FANTA TER 
ARN 
hane 
. 
vv 
( 
JR NG Pentti Eskola. Fe (LT 
Nå 
= | = 0 
KN Mol. | Mol. | NÅGE ; å 
numb. | 
RR 
SiO5 sö|. 71:28. | ANTTB7 a dd SANS OMan baren Na ISM Q=18.72 4 
AlO, | 4480) > 1410) 09:26] Ortböclase SL:s ee 35.58 j 
Fe,O,. | = 10 TA SNR FÄDER sa SR RASEN r=76 Sr ; 
FeO 0.66 9 | 1.51 Z sal 95,69 
MnO 0.03 0 — ACRYIEG TA Tao age el 0.92 TN 
'MgO | 0.26 ESO CaSiO, 0.70 I i 
ENSE EO TO MRER G E le ooo" PE 820 CO 
3 q 
Na,O |-4.90'] > 79 | -5.19:| Wollastonite ..... 1.04 ; ; 
KO | 604 | 641 4.20 | Hematite.'. .'. .... 016 | E 
TiO,' | 0.36 | 571 0.33 | Magnetite i ..... P0 FS 1.85 | 
P,O; 0.07 1 ER Nm ena te lens. TA UNO MORSE | j 
ELO P0 ATA) än | LEN EN Da tibe ASA 2 ÖBARNA | 
(Od Sö Se Al Z fem | 4.53 
| 100.16 | 100.00 ; 
å 
Tiparose (1.415) | ; 
The VÖSannöflGWress< MA se j ÄN a é 
| 4 
S A C F ad ÖNA Oh VERA | 
78:21, 9.39-(—0.:13) "1:51. 17:00:07 300 
| SER 3 
The process of the calculation of the mode was as follows: ; 
It was seen by a microscopic examination that the rock | 
contains quartz, microcline, albite with a little admixed | 
anorthite, pyroxene, titanite and apatite. All the ferric oxide | 
t 
was assumed to enter into the acmite molecules present in 
the pyroxene, and an equal molecular amount of Na,O was = 
allotted to it. After having set aside enough CaO to form 
apatite and titanite with the phosphoric pentoxide and 
titanic dioxide present, the amounts of the feldspars were ; 
found by allotting Al,O; and Si0; to K,O and the residual 7 
Na,0. The alumina still remaining was allotted to CaO for | 
anorthite and all the residual oxides were allotted to Si0, 
