���ִ��ɽ���������������--������ɽ�����εİ��������֮һ�����������ɽ�ڻ�������������Ͳ������������������У����¹�����ͷ��������ʻ�ɽ�ҵز��ϵ���С�����������о����������ɽ�����Ҫ������Һ����ͺ��ӿ���������������塣�ɿ����巴ӳ�˽��������ݻ����̣��ɿ���--�н׶η�����Һ����ˮ��Һ�����弰���ӿ�����������壬��һ�¶�Ϊ300 �� �� 460 �棬�����ζ�Ϊ1. 7 wt% �� 49. 92 wt% NaCl eqv���ý׶����徭��ѹ�������ã����´��ģ���ʳ���Ϊ���ɽ��󴲵����ɿ�׶�; �ɿ���׶����ڴ�����ˮ�Ĵ������룬������Һ����ˮ��Һ�����壬��һ�¶�Ϊ196. 5 �� �� 300 �棬�����ζ�Ϊ1. 7 wt% �� 7. 1 wt% NaCl eqv���ɿ�������������H2O -- NaCl ��ϵ��������������ǽ�����������������Ҫ���ƣ��ÿ��γ���½Ե��������

Daheishan super-large molybdenum deposit of Jilin is one of the porphyry molybdenum deposits in central Asia--Hinggan Mongolian orogenic belt�� The ore bodies are yielded in the Yanshanian granodiorite porphyry and unequal particle granodiorite��and closely related with Toudaogou metamorphic volcanic rocks of Lower Paleozoic�� The research on fluid inclusions showed that the samples mainly developed gas-liquid two-phase inclusions and daughter minerals-bearing three-phase inclusions in Daheishan deposit�� The ore-forming fluids reflected a continuous evolution process��forming gas-liquid two-phase aqueous inclusions and daughter minerals-bearing three-phase inclusions in early-middle stage��and the homogenization temperatures between 300 �� �� 460 �� and fluid salinity between 1. 7 wt% �� 49. 92 wt% NaCl eqv�� In this stage��the fluids underwent decompression and boiling action and resulted in laege-scale mineral precipitation��which was also the main mineralization stage�� In later stage��gasliquid two-phase aqueous inclusions were developed mixing with meteoric water�� The homogenization temperature is 196. 5 �� �� 300 �� and fluid salinity is 1. 7 wt% �� 7. 1 wt% NaCl eqv��belonging to H2O-NaCl system�� Fluid boiling action was the main mechanism of metal sulfides precipitate�� The Daheishan molybdenum deposit formed in the continental marginal arc environment��