▁glass ▁inclus ions ▁show ▁the ▁reverse ▁correlation ▁with ▁Si O 2 ▁concentr ations , ▁indicating ▁that ▁sul fur ▁sol ub ility ▁in ▁mag ma ▁is ▁controlled ▁by ▁mag ma ▁different iation ▁process ▁because ▁of ▁the ▁occurrence ▁of ▁the ▁S - rich ▁fluid ▁inclus ions . ▁ ▁Fl u or ine ▁ ▁Li u ▁used ▁chrom at ography ▁to ▁analyze ▁the ▁average ▁of ▁vol at iles ▁of ▁five ▁p um ice ▁and ▁obs id ian , ▁finding ▁the ▁flu or ine ▁content ▁to ▁be ▁ 0 . 0 1 5 8 – 0 . 0 4 8 1 %. ▁Horn ▁and ▁Sch imin cke ▁used ▁an ▁ion ▁pro be ▁to ▁find ▁an ▁average ▁flu or ine ▁content ▁in ▁inclus ions ▁of ▁ 0 . 4 2 9 4 %, ▁but ▁flu or ine ▁concentr ations ▁in ▁matrix ▁glass ▁show ▁a ▁significant ▁b im od al ▁distribution ▁into ▁F - rich ▁( 0 . 3 9 9 2 % ▁F ) ▁and ▁F - po or ▁( 0 . 2 4 3 1 % ▁F ). ▁In ▁order ▁not ▁to ▁over - est imate ▁syn - er upt ive ▁flu or ine ▁loss , ▁they ▁considered ▁this ▁b im od al ▁distribution ▁of ▁flu or ine ▁for ▁calculating ▁the ▁vol atile ▁difference ▁between ▁matrix ▁glass ▁and ▁m elt ▁inclus ions ▁( 4 3 0 0 ▁p pm ▁F ). ▁The ▁vol atile ▁loss ▁is ▁approximately ▁ 3 0 0 ▁p pm ▁F ▁for ▁m elt ▁inclusion ▁and ▁F - rich ▁matrix ▁glass ▁( 6 4