Spinel bụ mineral mejupụtara magnesium na aluminom oxide, n'ihi na ọ nwere magnesium, ígwè, zinc, manganese na ihe ndị ọzọ, ha nwere ike kewaa n'ụdị dị iche iche, dị ka aluminum spinel, ígwè spinel, zinc spinel, manganese spinel, chrome spinel na. ya mere na.