he aha kaʻona

He aha ke kino? Corralum mineral, crystalline-alumina (Al2O3), synononym trigonal, ditrigonal-scaleno. Loaʻa iā ia he kaʻawale a hoʻokuʻuʻia paha i nā huila pālili, dipyramidal a me nā papalina o ka hiʻohiʻona pseudohexagonal, ke kuhumu a me ...