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土屋铜矿床是我国近年来发现的特大型斑岩铜矿床,其独特矿床地质背景和矿床规模已经引起国内外地质学界和矿业界的广泛关注;本文详细叙述该矿床的地质背景,对矿床的地质、地球化学特征进行系统研究和总结,对矿床的成矿作用动力学过程进行探讨。研究表明,该矿床成矿物质具有深部来源特征,而岩浆在侵位过程中受到上地壳物质一定程度的混染;成矿流体以岩浆水为主,天水和岩浆水的混合仅为少量;石英流体包裹体均一温度较低,但盐度较高;含矿斑岩体是多次脉动式侵位的,成岩时代主要集中于早石炭世(367～358 Ma);成矿时代为晚于成岩时代(347.3±2.1 Ma～322.7±3 Ma)。
The Tuwu copper deposit is an extra-large porphyry copper deposit discovered in recent years in China. The unique geological background and size of the deposit have aroused widespread concern in the geology field and the mining industry at home and abroad. This paper describes the geological background of this deposit in detail, Geological and geochemical characteristics of the systematic study and summary of the mineralization process of mineralization dynamics. The results show that the ore-forming material of this deposit has deep source characteristics, and the magma is contaminated by the upper crustal material to a certain extent during emplacement. The ore-forming fluid is mainly magmatic water with only a small amount of mixture of Tianshui and magmatic water. Quartz The homogenization temperatures of fluid inclusions are lower but the salinities are higher. The ore-bearing porphyry bodies are multiple pulsatile emplacement. The diagenetic age mainly concentrates in the Early Carboniferous (367-358 Ma) Age (347.3 ± 2.1 Ma ~ 322.7 ± 3 Ma).