ƽ��ɽ���λ�ڼ�ľ˹�ؿ鶫�������󴲵IJ����ܶ��ѹ�����ƣ�������Ҫ�����ڸ߽Ƕ�����������У���ʯ����ΪʯӢ����ʴ�������֡������ڶ�ƽ��ɽ���ijɿ���ʱ������󴲵���������ϸ�о������ϣ�ͨ���Ը��ɿ�׶δ����Ե�ԭ������������������ѧ�۲졢��΢���ºͼ�������̽�������̽���˳ɿ��������ʺͿ󴲳������͡�����������о��������������������Һ����Ϊ�������ɿ�׶������һ�¶Ⱦ����е��� ( 142. 2�� �� 267. 3��) �����ζ� ( 1. 90% �� 4. 32% NaCl) �����ܶ� ( 0. 81 ��0. 94 g/cm3) ������������������ɷ���ҪΪ H2O�����Ϊ CH4�� CO2��Һ��ɷ���ҪΪ H2O �� CH4���ۺ��о�������ƽ��ɽ��������ܶ��ѿ��Ƶ��е�����Һ���ͽ�󴲡�

Pingdingshan gold deposit was located in the northeast of Jiamusi block��controlled by faults�� And ore-bodies occurred in the tensional high-angle fractured-altered zone�� The ore includes of the quartz-vein type and altered rock type�� On the basis of the detailed study of its mineralization geological background and characteristics�� the authors discussed the property of metallogenic fluids and deposit type through petrography��micro thermometry and ��aman microprobe of represented samples�� The results showed that fluid inclusions in quartz were well devel- oped mainly in gas-liquid phase�� The fluid of main ore-forming phase was characterized by medium-low temperature (142. 2 ��267. 3��)��low salinity (1. 39 ��5. 25% NaCl) and low density (0. 78 ��0. 97 g/cm3)�� The gas phase composition of the ore-forming fluid mainly were H2O��CH4and CO2��while the liquid phase were H2O and CH4�� Comprehensive study showed that the Pingdingshan gold deposit belonged to the gold deposit of medium-low temper- ature hydrothermal vein type��