ຜົນການຊອກຫາ

.../sup>.<ref name=Vaughan>Vaughan, D. J.; Craig, J. R. "Mineral Chemistry of Metal Sulfides" Cambridge University Press, Cambridge (1978) ISBN 0-521-21489-0</ ...e pyrite structure is also used by other compounds ''MX''₂ of [[transition metals]] ''M'' and [[chalcogen]]s ''X'' = [[oxygen|O]], [[sulfur|S]], [[sel ...