ignimbrites sing kawangun saka dicampur banget lingkungan diurutake saka awu vulkanik utawa tuff lan pumice lapilli, umum karo pecahan lithic kasebar.
soapstone punika talc-Schist, kang jinis rock metamorphic lan iku umumé dumadi saka talc Mineral lan kanthi mangkono inmagnesium sugih.
apatite, biotite, kalsit, chlorite, Feldspar, hematite, hornblade, ilmenite, magnetite, olivine, pyroxene, quartz
albite, apatite, biotite, kalsit, karbonat, mineral lempung, hornblende, ilmenite, micas, plagioclase, pyroxene, quartz
metamorphism kakubur, kontak metamorphism, hidrotermal metamorphism, impact metamorphism, metamorphism regional
metamorphism kakubur, metamorphism cataclastic, kontak metamorphism, hidrotermal metamorphism, impact metamorphism, metamorphism regional