E sebetsa ho tšepe ea tšepe, tšepe e se nang ferrous, lakane ea IC, ho roala, tšepe ea lamellar;Khalase, ceramic, agate, lehakoe, letlapa la polasetiki, joalo-joalo;Teko ea ho thatafala, joalo ka tlhahlobo ea botebo le gradient ea carbonization le likarolo tse thata.