Based on the determination of physical properties and chemical composition of native gold and pyrite from the newly-discovered Maopai gold depo-sit, the present paper deals with minerageny of native gold and pyrite. Various crystal forms of gold and pyrite could be observed along the vertical section of the orebody, and the formula for morphologic parameters might be used to judge the downward extension and the denudation degree of the orebody and the ore belt. The "Maopai-type" gold deposit has some unique cha-racteristics: ores are rich in gold. and poor in sulfides; pyrite contains high gold (>200 g/t), very low Sb and Hg and no As, and has fairly stable Co/Niratios, somewhat large cell parameter a0 and high infrared absorption peak.