����ɽ���󴲵Ŀ�����ϺͿ�������˳�򣬽��ɿ�׶λ���Ϊ 4 ���׶�: ������- -ʯӢ (�ػ�) �׶Ρ�ʯӢ- - ������ (��Ӣ�һ�) �׶Ρ���- -ʯӢ- -���������׶κ�ʯӢ- -̼���ν׶Ρ����������ɿ�׶ε�ʯӢ������������������ѧ����΢���¼�����ͬλ�ؽ��з������������: ��ʯ�еİ�������Ҫ�к� CO 2 ��������塢��Һ���������� CO 2 �������������ͣ���ʯ�еİ������ձ鸻�� CO 2 ���ɿ�����У����徭���� CO 2-H 2 O-NaCl ��ϵ�IJ��������á��ɿ�������е��ζ� (4. 0 ��9. 0 wt% NaCl. eqv) �͵��ܶ� (0. 70 ��0. 89 g/cm 3 ) ���ص㡣���ɿ��¶�Ϊ 260�� ��300�棬�ɿ�ѹ��Ϊ 83 ��100 MPa����Ӧ�ɿ����Ϊ 7. 45 �� 8. 25 km���������������ͬλ�ط���������ڵ�ᣳ���ˮ���ҽ�ˮ֮�䣬�����������ˮ�߷���Ư�ƣ�����ɽ����ɿ��������Դ����Ϊ�������д�����ˮ����������ļ��룬����ȷ��ɽ�������ܶ��ѹ�����Ƶ�������Һ���ͽ�󴲡�

According to the mineral combination and mineral genesic sequence of Shanhou gold deposit��the ore- forming stage can be divided into 4 stages: pyrite- quartz (potassic alteration) stage��quartz- pyrite (phyllic) stage��gold- quartz- sulphides stage and quartz- carbonate stage�� The authors have studied the petrographic��micro- thermometric and H- - O isotope on fluid inclusions in this ore of main mineralizing stages of Shanhou gold deposit and find there are 3 types of fluid inclusions: CO 2 - bearing three- phase fluid inclusions��aqueous two- phrase fluid inclusions and pure CO 2 inclusions�� CO 2 are widespread in the fluid inclusions in quartz of this ore�� The fluids of main mineralizing stages should be a CO 2-NaCl-H 2 O system and fluid immiscibility occurred in the ore- forming process�� The ore- forming fluids are low in salinity (4. 0 ��9. 0 wt% NaCl. eqv) and low in density (0. 70 ��0. 96 g/cm 3 )��mineralization temperature is concentrated in 260�� ��300�棬and mineralization pressure ranges from 83 to 110 MPa��while mineralization depth ranges from 7. 45 to 8. 25 km�� The analysis of hydrogen and oxygen iso- topes of fluid inclusions shows that the data are between the mantle derived water and magmatic water and some drift to the precipitation line�� It proves that the Shanhou gold ore- forming fluids derived mainly from deep mantle fluids�� and accompanied by a small amount of atmospheric water and other fluids�� It is preliminarily determined that the genesis of the deposit is mesothermal gold deposit in type��which was controlled by faults��