Several main alteration features are described as follows.

1、钾长石化花岗岩带。围岩蚀变的最外带，分布面积相对较宽。交代结构普遍发育，主要为钾长石交代斜长白的交代溶蚀、交代残留及交代港湾状等结构。

1, potash feldspar granite belt. The outer wall rock alteration, the distribution area is relatively wide. Metasomatic texture is widely developed. Mainly potassium feldspar metasomatism oblique Changbai metasomatic dissolution and metasomatism residual and metasomatic harbor like structure.

2、绢云母化花岗岩带。绢云母化叠加于钾长石化花岗岩带之上，乙般蚀变范围较窄，特征为长石类矿物表面污浊，斜长石被绢云母交代，呈残留状，原岩一般为碎裂状花岗岩。绢云母常呈鳞片状，为集合体，主要交代斜长石。

2, the silk mica granite belt. Sericitization superposition in K-feldspar granite zone, B inhibition change range is narrow, feature for feldspar minerals surface dirty, plagioclase is sericite account, a vestigial like and protolith is generally the cataclastic granite. Sericite often scaly, as a collection, the main account of plagioclase.

3、绢英岩化花岗岩带。绢云母化蚀变进一步加强，在空间上叠加于钾长石蚀变带之上，时间上比钾长石化晚。岩石呈微绿色，交代架构极为普遍。该带与钾长石化带的区别是黑云母已全部脱铁成为浅色云母，角闪石全部消失，主要蚀变矿物为绢云母和次生石英，呈细粒交代结构。此蚀变带仅在Ⅰ、Ⅱ号矿化带构造膨胀部位见有发育。

3, beresitization granite belt. The alteration of the silk mica is further strengthened, and the time is longer than the potassium feldspar alteration zone, which is superimposed on the potassium feldspar alteration zone. Rock was slightly green, the account is very common architecture. With the difference between the belt and potassium feldspathization is biotite have all been iron removal into light colored, mica, amphibole disappeared, the main corrosion mineral as sericite and quartz overgrowths, a fine-grained metasomatic texture. This alteration zone is found to be in the first and second mineralization zone.

4、绢英岩带。内侧蚀变带向硅化渐变过渡。野外岩石呈灰白、浅绿色，丝绢光泽，镜下呈微鳞片状变晶结构。原花岗岩结构完全消失仅局部见少量被长石交代的假象。蚀变矿物主要为云母和次生石英，其次为黄铁矿、绿泥石和碳酸盐矿物。

4, the silk British rock belt. Transition of the medial alteration zone to the gradual transition of the silicon. The field rock showed gray, light green, silk, silk luster, under the microscope, the shape of the crystal structure. The original granite structure completely disappeared only partially see a small amount of feldspar account of the illusion. The altered minerals such as mica and secondary quartz, pyrite, followed by chlorite and carbonate minerals.

5、硅化带。该带发育在含金石英脉及绢英岩化花岗岩带之上，与成矿关系密切。岩石几乎全部由角砾状及糖粒状石英组成，含少量绢英岩角砾，并发育晶形完好的浸染状黄铁矿。因此，可以推断本带是绢英岩再遭构造破碎－硅化的结果。

5, the band. With the development of the auriferous quartz veins and beresitization granite belt, close relationship with mineralization. Rock almost all consists of brecciated and sugar granular quartz, containing a small amount of Sericite quartz breccia, and development complete crystal form of pyrite disseminated. Therefore, it can be inferred that this band is the result of structural broken and broken.

6、黄铁矿化。一般与硅化紧密伴生，可分为早晚两期。早期为黄铁矿呈中粒自形－半自形在岩石中呈星点状和浸染状分布；晚期黄铁矿呈中细粒半自形粒状沿裂隙呈细脉状分布，与金矿化关系密切。

6, yellow iron mineralization. Generally associated with the silicon, can be divided into sooner or later. Early pyrite showing euhedral semi euhedral in rocks is star shaped and disseminated distribution; late pyrite is in fine semi euhedral granular along the fracture was fine vein distribution and relation with gold mineralization closely.

7、绿泥石化。多发育于围岩原岩为角闪黑云斜长片麻岩中常见的蚀变种类，常与硅化、绢云母化和黄铁矿化伴生。

7, green mud. Developed in the wall rock protolith angle flash biotite plagioclase gneiss in the common corrosion types, often associated with silicification, sericitization and pyrite mineralization associated.

8、碳酸盐化。该蚀变较发育，多呈细脉状分布于近矿蚀变岩裂隙中。

8, carbonation. The alteration is developed, is located near the ore veinlet altered rock fracture.