黑龙江省霍吉河钼矿成矿特征及赋矿花岗闪长岩锆石U-Pb年龄

METALLOGENY AND ZIRCON U-Pb AGE OF ORE-BEARING GRANODIORITE OF THE HUOJIHE MOLYBDENUM DEPOSIT IN HEILONGJIANG PROVINCE

摘要: 霍吉河钼矿床产于伊春-延寿花岗岩带中北段晚三叠世-早侏罗世花岗闪长岩岩体内，辉钼矿呈细脉浸染状赋存于花岗闪长岩的裂隙中，成因类型属于细脉浸染型钼矿床.赋矿花岗岩的岩石类型主要有花岗闪长岩、二长花岗岩，采用锆石U-Pb方法确定的花岗闪长岩成岩年龄为190.3±2.4 Ma.成矿作用发生在燕山早期.

Abstract: The Huojihe molybdenum deposit in Heilongjiang Province occurs in the Late Triassic-Early Jurassic granodiorite in the north part of Yichun-Yanshou granite belt. The molybdenite is hosted in the fractures of granodiorite, genetically belonging to veinlet-disseminated deposit type. The ore-bearing granitoid involves mainly granodiorite and monzogranite. The zircon U-Pb dating result of diagenetic age of the granodiorite is 190.3±2.4 Ma, suggesting that the mineralization age of the Huojihe molybdenum deposit is Early Yanshanian.