| Huangbuling gold deposit is located at the west-north of Zhaoyuan-Pingdu gold deposit zone of Jiaodong upwelling area and in the hanging wall of Fenghuang Mountain –Huangbuling fault. It is controlled by Canzhuang gold deposit. Archaean Jiaodong group metamorphic rock remained some xenoliths in Huangbuling ore filed. Its lithology characterize Biotite granulitite, amphibolite. Magmatic rocks mostly crop out Linglong granite and Guojialing granodiorite. Linglong granite is crop out in superficial part, and Guojialing granodiorite is plunged into deep part of Huangbuling ore field, which form double granite structure. Fenghuang Mountain–Huangbuling fault is the major ore-controlling structure in the ore filed. And ore-bearing fault are distributed in the hanging wall of this fault. The dykes are found in the deposit include lamprophyre, diorite diabase, pegmatite and subandestite.Lamprophyre is closed associated with gold mineralization in the both time and space .In the deposit, there are two groups of lamprophyre based on their orientation: NE and NNE oriented.NE oriented lamprophyre is altered and mineralized while the NNE oriented ones crosscut the auriferous veins .The scale of the lamprophyre is generally quite small. It should be pointed out, that at the eastern side of the deposit, NNE trending dykes are altered and mineralized also and contain maximum up to 1.2g/t of gold. 15 gold veins of different scale have been found ,among which 7#,10#,11#,4#,6#,and 15# contain industrial ore bodies.7# vein is oriented in the NE45°±and is about 1000m long ,It consists of two southeastward dipped and one northwestward dipped veins and the later is the subordinate vein of the former .The three veins Make up a "入"pattern in the profile and contain 7-1#,7-2#,7-3# ore bodies .These ore bodies are vein –or lenticular shaped .In the southeastward dipped veins, the ore bodies occur in the major vein, while in the northwestward dipped subordinate vein, the ore body dips NW. the ore bodies are different in the scale. 7-1# ore body is the largest one that is 275m long, extends to –150m along the dip direction. The mineralized ratio in the 7#vein is some 35%, and the ore bodies pitch NE with a pitch angle of 30°.10# vein trends in the NE65°,being 800m long and dipping southeastward at a 50-85°angle.Five different sized ore bodies have been found in 10# vein .the ore bodies are prismatic, veined and lenticular shaped. They pitch NE at 40-60°angle with apparent pinching out and reappearing. The mineralized ratio of the vein is about 40%. Research indicates that the ore bodies at intersecting sites of the NE and NNE trending faults contain higher gold grade. The make-up of the deposit is very complicated. The metallic minerals in the ores include pyrite, colloid pyrite, pyrrhotite, molybdenite, chalcopyrite, galena, sphalerite, bismuthinite, lilianite, argentite, native silver, hessite, electrum, goldargentid, native gold, magnetite, hematite, siderite, specularite and so on. Non-metallic minerals include quartz, potassic feldspar, calcite, and chlorite and so on. The gold-bearing minerals in the ores are mainly electrum while the silver-bearing minerals are mainly argentite. Among the minerals mentioned above, specularite , colloid pyrite, bismuthinite, lilianite, native silver and argentite are associated with base metallic sulfide stage that is later than the formation of the magnetite, secularity, potasic feldspar and early generation of quartz and pyrite. Mineralization stage Based on the structures and textures of gold ores andon th cross-cutting relationship of gold veins in the deposit, four mineralizing stages→quartz→pyrite→base metallic sulfide→carbonate minerals, have recognized, with the second and the third mineralizing stages dominating. Wall-rock alteration. Alteration found in the deposit includes potassic alteration, berecitization, silicification, carbonatization, sericitization and chloritization. Among all these alteration, silicification, berecitization are most closely related to gold mineralization. Alteration at both the footwall and hanging wall of an ore body is zonally distributed, and from the ore ody outwards the alteration zones are: ore body→silicification→berecitization→potassic alteration. According to the test result of inlclusions of quartz fluid, the depth of golden deposit on Huangbuling is 1.370-3.495Km, and the forming temperature is concentrated on 250℃. At the same time the result of isotope test shows the thermal liquid of ore formation is mixed by magma water and precipitation, and the sulphur in the ore deposit is from melting granitic magma. All the above tests proof that the ore deposit on Huangbuling is a thermal liquid ore deposit of mid-shallow stratum, mid-low temperature and its overlay on shallow stratum. Zoning sequence of element at vertical is,7# vein of gold: (Cu,Co)-(Au,Ag,Pb,Zn)-(As,Sb,Bi)-(Ni,Hg);,10# vein of gold: (As,Sb)-(Au,Co,Ni,Zn)-(Ag,Pb,Cu,Bi,Hg).Compare with typical zoningsequence,it occurrence "dislocation". According to the explanation of abnormality, the alloisomerism, foretell the subsistence of orebody . According to the result of cluster analysis and factor analysis about 7# and 10# vein of gold in Huangbuling, the concentrateion of Au highly correlates with Ag,Cu,Pb,Zn,Bi.Associate geochemical behavior, make sureth the elementary composition in middle of orebody include Au,Ag, Cu, Pb, Zn, Bi; the elementary composition in head of orebody include As,Sb,Hg; the elementary composition in rear halo of orebody include Co,Ni. The result of simulation about structural level indication the position of orebody occurrence is position of construction dogleg.and the deep of two vein...
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