Sindy Yap

Hope some experts can help me answer the question below~ really need for the help ~~ thanks so much^^ My question: I am studying a polished cross-sectional piece of an igneous rock under the SEM. How do I determine which phases/compounds crystallize first...

hey, SraJMcGin,anyhow thx for your help. Actually the question from allexpert was me asked their help too~~~ My lecturer still need us further search and get as more as possible different answer~ thx u so much^^