The formation of alkaline metasomatites with charoite, potash richterite (richterite asbestos) and blue nephrite is conditioned by inert behaviour, first of all, of silicic acid and alkalis (with a varying role of Na 2O and K 2O) and by quite mobile FeO, MgO, CaO, and Al 2O 3.

Through detailed research on sample analysis result from energy spectrum,scanning electron microscope and ordinary optical microscope,an unusual amphibole mineral is discovered—magnesium rich arfvedsonite,sourcing from secondary alteration of titanite,which is a very unusual mineral metasomatic alteration phenomenon,that is,natrium and ma.

Using thin section X-ray diffraction techniques,his paper identified arfvedsonite in volcanic rocks from Songliao Basin,and thus confirmed that the volcanic rocks are composed of pantellerite.