Trachybasalt
(provided by Malcolm Rutherford)
Oxide
wt. %
SiO
2
48.99
TiO
2
1.95
Al
2
O
3
16.91
Fe
2
O
3
1.76
FeO
8.99
MnO
0.17
MgO
5.89
CaO
8.69
Na
2
O
3.57
K
2
O
1.86
P
2
O
5
1.23
Total
100
Reference:
Composition used by Los Alamos Study Group.
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Last modified: Tuesday May 08, 2007