黑龙江省大兴安岭岔路口斑岩型钼多金属矿地质特征

Geological characteristics of Chalukou porphyry molybdenum polymetallic deposit, Daxinganling, Heilongjiang province

岔路口斑岩型钼多金属矿是黑龙江省有色地质勘查706队近几年的重要勘查成果之一,经过3年勘查,已达到大型规模,有望达到超大型。该矿具备典型的斑岩型蚀变分带特征,从内向外,钾化带、石英—绢云母化带、泥化带、靑磐岩化带发育完整。赋矿岩体为燕山晚期的酸性侵入岩,铅锌等多金属脉状矿体发育其上部。经岩石特征分析,赋矿岩体来自深源。富含挥发份的含矿岩浆被动侵位,并发生隐爆是成矿的主导因素。

Discovering the Chalukou porphyry molybdenum polymetallic deposit is one of the important exploration results in recent years, by Team 706, Heilongjiang Province Nonferrous Geological Exploration. It has been a large deposit after three year exploration, and has a potential for being a super - large deposit. It＇ s have typical porphyry altered zoning characteristics, from the inside to the outside, potassium alteration belt, quartz - sericite alteration belt, mud alteration belt, etc. The host rock, in the top of which, lead and zinc polymetalic orebodies occurs, is the acidic intrusive rocks derived from the deep source during late Yanshan period. The volatile - rich and metal - rich magma passively emplaced and exploded underground, which are the important factors for mineralization mechanism. Discovering this deposit has important guiding significance in this area.