辽宁萤石矿成矿条件和成矿规律探讨

辽宁是国内萤石重要产地之一,分布着阜新哈尔套-义县地藏寺、辽阳隆昌—金州杏树屯两个萤石成矿带,带内已发现大中型矿床7处、中小型矿床和矿(化)点60余处。通过对辽宁萤石成矿特征和地层、侵入岩、构造等控矿条件与成矿关系的分析,认为萤石成矿类型为中低温岩浆期后热液充填交代型,围岩类型主要为碳酸盐岩和硅酸盐岩;萤石成矿时期为燕山期、印支期和华力西期,且以燕山期为主;萤石矿体多赋存在花岗岩岩体内部断裂带或与围岩外接触带的断裂带位置。依据萤石矿床的地质特征和成矿规律,结合构造、岩石与围岩、地球物理与地球化学等找矿标志,圈定出6个成矿远景区。

DISCUSSION FLUORITE METALLOGENIC CONDITIONS AND METALLOGENIC REGULARITY OF LIAONING PROVINCE

Liaoning is one of the important domestic origin fluorite, the distribution of Fuxin Hal sets - Yixian Zang, Liaoyang Longchang - Golden State xingshutun two fluorite metallogenic belt, it has been found with a mid to large deposit 7, sized ore deposits and (of) more than 50 points. The author of Liaoning fluorite mineralization and stratigraphic features, intrusive rocks, tectonic and other ore-controlling conditions and metallogenic analysis to investigate the relationship between mineralization regularity; that the fluorite mineralization type to low temperature magmatic hydrothermal filling and replacement, Wai the main types of rock silicate rocks and carbonate rocks; fluorite mineralization period of Yanshan, Indosinian and Variscan and Yanshan of the main; fluorite ore bodies are hosted by more granite rock mass fracture or fault with the contact position of the belt and the outer wall rock. Based on geological characteristics and metallogenic regularity fluorite deposits, combined structure, rock and rock, and other geophysical and geochemical prospecting signs, delineation of mineralization prospect area, the next step fluorite exploration and prospecting work carried out an important reference and significance.