nˈɑːnmətˈælɪk ɪŋklˈuːʒənz ðæt ɚɹˈaɪz bɪkˈʌz ʌv dˈɪfɹənt ɹɪˈækʃənz dˈʊɹɹɪŋ mˈɛɾəl pɹədˈʌkʃən ɑːɹ kˈɔːld nˈætʃɚɹəl ɔːɹ ɪndˈɪdʒənəs.
Non-metallic inclusions that arise because of different reactions during metal production are called natural or indigenous.