Basalt Composition
What is Basalt Rock Composition?
Average chemical composition of basalt determined by 3594 chemical analyses of basaltic rocks.
SiO2 — 49.97
TiO2 — 1.87
Al2O3 — 15.99
Fe2O3 — 3.85
FeO — 7.24
MnO — 0.20
MgO — 6.84
CaO — 9.62
Na2O — 2.96
K2O — 1.12
P2O5 — 0.35