一、地質矿床情况我矿为高中温热液充填,含钨锡銅等多金属,多次成矿急傾耕薄矿脉的脉状矿床。脉石为乳白色石英脉,比重2.7。围岩全为等粒与中粒花崗岩。围岩蝕变有云英岩化、絹云母化、硅化、綠泥石化及高岭土化等。围岩矿染深度一般为0.24～0.3米。矿脉分为南、中、北三组。現将各脉影响采矿的地质特点加以分类如下: (一) 脉石不够稳固,围岩风化和节理发达不稳固这一类型矿脉为10号脉。本脉走向北75°东,傾角70～80度。脉幅0.2～0.3米,平均为0.68米。矿脉产状尖小、膨胀、分支交替現象常有出現。脉石硬度f=4～8。矿脉与围岩接触明显,并有灰黑或白色矿壁 First, the geological deposit situation I mine for the high temperature hydrothermal filling, tungsten and tin-copper and other polymetallic, multiple emergency dipping thin veins vein deposits. Gangue milky quartz veins, the proportion of 2.7. Surrounding rocks are all equal and granitic granite. Surrounding rock alterations include dolomitization, sericite, silicification, chloritization and kaolinization. The surrounding rock mineral dyeing depth is generally 0.24 ~ 0.3 meters. The veins are divided into three groups: south, middle and north. The geological features of each vein are now classified as follows: (i) The gangue is not stable enough and the weathering and jointing of the surrounding rock are unstable. This type of vein is No. 10 vein. The pulse to the north 75 ° east, dip 70 to 80 degrees. Pulse 0.2 to 0.3 meters, an average of 0.68 meters. The tip of the veins is small, swollen, and branches alternate. Gangue hardness f = 4 ~ 8. The veins have obvious contact with the surrounding rock and have dark gray or white mineral walls