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Aluminium oxide
3
Calcium oxide
3
Event label
3
Latitude of event
3
Longitude of event
3
Magnesium oxide
3
Manganese oxide
Potassium oxide
3
Sample code/label
Silicon dioxide
3
Sodium oxide
3
Sum
3
Titanium dioxide
3
Age, dated material
2
Area/locality
2
Barium
2
Caesium
2
Carbon dioxide
2
Cerium
2
Chromium
2
Cobalt
2
Copper
2
Dysprosium
2
Erbium
2
Europium
2
Gadolinium
2
Hafnium
2
Holmium
2
Iron oxide, Fe2O3
2
Iron oxide, FeO
2
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