简介:IntroductionRutile,acommonoxidemineral,widelyoccursindifferentgeologicalenviron-ments.Inigneousrocks,especiallyinplutonicrocks,itexistsasaminormineralingranularform,sometimesintheformoflargecrystalsinpegmatites.Asanaccessarymineral,rutilecanbefoundinmanymetamorphicrockssuchasamphiboliteandeclogite.Itisnotararecasetofindrutileinsedimentsasadetritalmineral.