Appendix B.  Tmatoro  Mineral compositions from electron microprobe analyses
Unit Mineral Chemical composiion
Tmatoro labradorite Ab41An58Or1
Tmatoro labradorite Ab47An52Or1
Tmatoro andesine Ab50An48Or2
Tmatoro amphibole hornblende
Tmatoro amphibole hornblende
Tmatoro amphibole hornblende
Tmatoro hematite (Mg0.03Fe3+1.96Ti0.02)O3