ͭ����ͭ���ع���λ��λ�ڻ�������ͨ�в���ɽ���ϲ������ݿ�Χ��Ϊ�����������ҡ����������Ҽ����ʻ��Ի�ɽ�ҡ��Բ�ͬ�׶�ʯӢ�������������˰���������ѧ����΢����ѧ�ͼ���������΢̽���о�������������ɿ����������ɷ�Ϊ��Һ��������塢�����Ӿ������塢��ʯ���Ӿ������塢��CO2 �����弰��CO2 �����塣������׶��Ը������Ӿ�������( ��һ�¶�Ϊ436. 2 �� �� �� 550 �棬�ζ�( w ( NaCl) ) Ϊ49. 34% �� �� 62%) �ͺ�ʯ���Ӿ�������( ��һ�¶�Ϊ345. 6 �� �� �� 550 �棬�ζ�( w ( NaCl) ) Ϊ29. 72% �� �� 62%) Ϊ�������ɿ�׶���Ҫ�ɺ�ʯ���Ӿ�������( ��һ�¶�Ϊ169. 1 �� �� 324. 9 �棬�ζ�( w ( NaCl) ) Ϊ30. 47% �� 39. 75%) ����Һ���������( ��һ�¶Ƚ���159. 9 �� �� 242. 9 �棬�ζ�( w ( NaCl) ) Ϊ1. 56% �� 22. 31%) ��ɲ�����������CO2 ������ ( ��һ�¶�Ϊ259. 7 �� �� 320. 5 �棬�ζ�( w ( NaCl) ) Ϊ8. 93% �� 13. 16%) �ʹ�CO2 ������( CO2 ��һ�¶�Ϊ24. 3 �� �� 27. 22 ��) ����ɿ�׶ν�������Һ���������( ��һ�¶�Ϊ126. 9 �� �� 212. 3 �棬�ζ�( w ( NaCl) ) Ϊ1. 56% �� 7. 44 %) �������������׷�������������ɷ���ҪΪH2O��CO2�� HF ��ɣ�����ΪCO2��N2�����������ձ����CO2����׶�����ӦΪ���¸��θ����ݶ�NaCl �� H2O �� CO2 ��ϵ�����ɿ�׶κ���Һ����������븻CO2 ������干�棬�������巢���˲����ܻ�������󡣳ɿ���׶ε��µ��ζ���Һ��������������Դ�ڴ�����ˮ��������Ϊ��ͭ����ͭ����������������͡�

Tongkuangyu copper deposit is located in the south of North China craton medio-orogenic belt�� The major ore-hosted rocks are granodiorite porphyry��monzogranite and metamorphosed mafic volcanic rocks�� we made petrographic��microthermometric and laser Raman spectroscopic studies on the fluid inclusions�� The results show that fluid inclusions in quartz crystals can be classified into aqueous and gas two-phase��daughter mineral-bearing multi-phase��halite daughter mineral-bearing phase��CO2-bearing and pure CO2 phase inclusions�� In early mineralization stage��fluid inclusions are characterized by mainly daughter mineral-bearing multiphase type with 436. 2 �� ���� 550 �� in homogenization temperatures and 49. 34% �� �� 62% in NaCl salinities��and halite daughter mineralbearing type with 345. 6 �� �� �� 550 �� in homogenization temperature and 29. 72% �� �� 62% in NaCl salinities�� In main mineralization stage��fluid inclusions are halite daughter mineral-bearing type with 169. 1 �� �� 324. 9 �� in homogenization temperatures and 30. 47% �� 39. 75% in NaCl salinities��aqueous type with 159. 9 �� �� 242. 9 �� in homogenization temperatures and 1. 56% �� 22. 31% in NaCl salinities��and a small amount of CO2 type with 259. 7 �� �� 320. 5 �� in homogenization temperatures and 8. 93% �� 13. 16% in NaCl salinities��and pure CO2 type with 24. 3 �� �� 27. 22 �� in homogenization temperatures�� Inclusions of the late mineralizing stage only contain aqueous and gas two-phase type with 126. 9 �� �� 212. 3 �� in homogenization temperatures and 1. 56% �� 7. 44% in NaCl salinities�� Laser Raman spectroscopy of inclusions indicate that the principal gas-phase components are H2O and on the early stage the gas components are CO2 and HF��on the main mineralization stage the gas components are CO2 and N2 �� CO2 is prevalent in fluid inclusions�� The fluids on the early mineralizing stage should be a NaCl-H2O-CO2 system with high homogenization temperature��high salinity and high oxygen fugacity�� In the main mineralization stage the CO2phase and NaCl-H2O phase inclusions coexisting indicates immiscibility or boiling of fluids�� The low temperature and low salinity aqueous and gas two-phase inclusions of late mineralization stage may be derived from meteotic water�� On the basis of fluid features and the geological characteristics��genetic type of Tongkuangqu copper is defined porphyry copper��