[TEM]: Ca-poor and Ca-rich px (high Cr contents). Fe-Ni sulfides, Fe sulfides. Unusual grain (~300 nm ) bearing major amounts of Si, O and Mg and minor amounts of Al, Na and K. Low-Ca pyroxene is variable in Fe/Mg ratio, ranging in composition from Fs2 to Fs13 and from Wo1 to Wo5. It contains very minor, variable amounts of Al, Cr and Mn. High-Ca pyroxene has a range of composition from Fs15 to Fs19 and from Wo34 to Wo40. Olivine is Fe-rich and also variable in Fa content, ranging from Fa30 to Fa41. It contains very minor amounts of Mn. Olivine, has a wide compositional range, but which lacks Mg-rich varieties, unlike the closely associated low-Ca pyroxene.
| Notes By: | Tomeoka | Date: |