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Calcium
18
GEOS
Geological sample
18
Magnesium
Aluminium oxide
17
Calcium oxide
17
FeO
17
Iron 2+
17
Iron 3+
17
Iron oxide
17
Magnesium oxide
17
Manganese
17
Manganese oxide
17
Sample code/label
17
Silicon
17
Silicon dioxide
17
Titanium
17
Titanium dioxide
17
Potassium
16
Sodium
16
Aluminium
15
Aluminium (IV)
15
Chromium
15
Chromium(III) oxide
15
Potassium oxide
15
Sodium oxide
15
Fe2O3
14
Sum
13
Electron microprobe (EMP)
12
GeoMaud95/96
12
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