Table 3
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Examples of bulk compositions (molar units) extracted from XR maps of Figs 15 and 16 and calculated original spinel+olivine mixtures after subtracting SiO2 from Spl2 + Chl2 mixtures

Sample OM-165A2  OM-165C 
TypeSpl2 + Chl2Spl3 + Chl3Spl2 + Chl2–SiO2Spl2 + Chl2Spl3 + Chl3Spl2 + Chl2–SiO2
SiO216.923.411.79.224.16.2
Al2O316.512.517.618.611.019.2
Cr2O314.110.514.920.811.121.5
FeO11.38.712.017.09.217.6
MgO41.344.943.934.344.635.5
Sum100.0100.0100.0100.0100.0100.0
Sample OM-165A2  OM-165C 
TypeSpl2 + Chl2Spl3 + Chl3Spl2 + Chl2–SiO2Spl2 + Chl2Spl3 + Chl3Spl2 + Chl2–SiO2
SiO216.923.411.79.224.16.2
Al2O316.512.517.618.611.019.2
Cr2O314.110.514.920.811.121.5
FeO11.38.712.017.09.217.6
MgO41.344.943.934.344.635.5
Sum100.0100.0100.0100.0100.0100.0
Table 3
Open in new tab

Examples of bulk compositions (molar units) extracted from XR maps of Figs 15 and 16 and calculated original spinel+olivine mixtures after subtracting SiO2 from Spl2 + Chl2 mixtures

Sample OM-165A2  OM-165C 
TypeSpl2 + Chl2Spl3 + Chl3Spl2 + Chl2–SiO2Spl2 + Chl2Spl3 + Chl3Spl2 + Chl2–SiO2
SiO216.923.411.79.224.16.2
Al2O316.512.517.618.611.019.2
Cr2O314.110.514.920.811.121.5
FeO11.38.712.017.09.217.6
MgO41.344.943.934.344.635.5
Sum100.0100.0100.0100.0100.0100.0
Sample OM-165A2  OM-165C 
TypeSpl2 + Chl2Spl3 + Chl3Spl2 + Chl2–SiO2Spl2 + Chl2Spl3 + Chl3Spl2 + Chl2–SiO2
SiO216.923.411.79.224.16.2
Al2O316.512.517.618.611.019.2
Cr2O314.110.514.920.811.121.5
FeO11.38.712.017.09.217.6
MgO41.344.943.934.344.635.5
Sum100.0100.0100.0100.0100.0100.0
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