Chap. XL.] 
VIZAGAPATAM : KODUE. 
1069 
composed of a very magnetic mineral (probably mangan-magnetite), 
psilomelane, and soft brownish black oxide. 
Specimen 
Specimen 
JNo. A. dJ4. 
No. A. 33G. 

MnOs 
71 10 
44-68 
MnO 
9-84 
24-85 
Fe^Oa 
6-57 
1314 
AI2O3 
1-38 
6-84 
BaO 
0-G5 
0-53 
CaO 
0-66 
0-86 
MgO 
0-32 
0-50 
KjO 
3-75 
1-01 
Na^O 
0-21 
021 
Si02 (combined) ...... 
2-00 
4-50 
Si02 (free) 
nil 
0-20 
Sulphur ....... 
0-025 
0-030 
PaOj 
0-492 
0-261 
AsjOg 
nil 
nil 
CoO 
0-05 
0»08 
NiO 
0-05 
0-07 
........ 
0-04 
0-07 
PbO 
nil 
nil 
ZnO 
010 
0-10 
T1O2 
0-06 
0-11 
Cblorioe ........ 
Irace 
Trace 
Fluorine ........ 
nil 
nil 
H2O (combinotl) water ..... 
2-60 
1-90 
Moisture at lOQOC 
0-30 
0-20 
CUs ........ 
nil 
nil 
100-197 
100-141 
These are equivalent to : — 
Manganese ....... 
52-58 
47-50 
Iron ........ 
4-60 
9-20 
Silica (total) ....... 
2-00 
4-70 
Phosphorus ....... 
0-215 
0114 
