After　more　than　a　century　of　unremitting　efforts　over　several　generations,　particularly　in　recent　years,　magmatic　immiscibility　has　been　received　attention　from　industry,　reaching　unprecedented　heights　in　theory　and　practice.　Large-　scale　immiscibility　of　acidic　magma　was　first　discovered　by　the　authors　in　volcanic　rocks　along　the　southeastern　coast　of　China.Through　a　detailed　petrographic　study,　it　was　revealed　that　the　magma　has　two　liquid　phases　immiscible　separations　under　the　condition　of　temperature　between　900　and　650　and　the　change　of　supercooling　degree.　One　phase　is　the　silicon-　rich　spherule　phase　and　the　other　is　the　iron-　rich　matrix　phase.　The　spherules　may　be　formed　by　the　anionic　agglomeration　of　silica　tetrahedron　with　high　viscosity　and　rich　bridged　oxygen　phase.　After　nucleation,　emulsion　droplets,　that　will　be　integrated　into　plastic　spherules　will　be　formed.　The　ball　collision　will　be　combined　to　establish　spherical　individuals.　The　spherical　individuals　have　experienced　three　generations　of　collision　and　repeated　overlapping　growth.　Under　the　comprehensive　action　of　buoyancy　and　magma　upwelling,　numerous　spherical　particles　are　separated　from　molten　slurry,　floating　up　and　cloud　integrated　with　large-　scale　silicon-　rich　spherical　facies,　namely　spherule　rhyolite　porphyry　geological　body,　and　the　iron　rich　matrix　facies　sinks　to　form　the　dacite　geological　body.　Geochemical　characteristics　show　that　the　main　elements　SiO2,　K2O,　Na2O　and　trace　elements　Ba　and　Sr　are　enriched　in　the　spherule　phase,　while　the　main　elements　Al2O3,　TiO2,　MgO,　TFe2O3and　trace　elements　Rb,　Cs,　Zr,　Hf,　Th,　Ta,　Nb,　La,　Ce,　Ni,　Co　and　ΣREE　are　enriched　in　the　matrix　phase.　With　the　increase　in　the　proportion　of　spherule　phase,　that　is,　the　spherule　growth,　the　matrix　phase　is　decreasing,　and　the　material　exchange　and　migration　between　the　two　phases　obviously　show　that　the　residual　magma　is　evolving　towards　the　basic　direction,　which　may　be　the　main　path　of　the　immiscibility　evolution　of　acid　magma.　©　2022　Geological　Society　of　China.　All　rights　reserved.