硫化铜镍矿床成矿作用机理——以新疆哈密黄山硫化铜镍矿床为例  

ORE-FORMATION MECHANISM OF Cu-Ni SULFIDE DEPOSIT——GIVING HUANG SHAN Cu-Ni SULFIDE DEPOSIT NEAR HAMI CITY AS AN EXAMPLE

作　　者：傅学明[1] 刘凤山 

机构地区：[1]兰州大学地质系 [2]东北地勘局2研究所

出　　处：《甘肃地质学报》1992年第2期66-72,共7页Acta Geologica Gansu

摘　　要：本文作者以哈密黄山硫化铜镍矿床为例,详细探讨了硫化铜镍矿床成矿作用,指出硫化铜镍矿床成矿作用是比较复杂的,按产生不混熔金属硫化物的途径和熔离富集的方式可明显地划分为四种熔离成矿作用:(1)岩浆深部液态熔离成矿作用、(2)矿浆成矿作用、(3)岩浆浅部就地结晶熔离成矿作用及(4)同化混染熔离成矿作用。岩浆深源液态熔离成矿作用是产生多样性岩浆和铜镍等成矿元素原始富集的重要原因,矿浆成矿作用是岩浆深源液态熔离成矿作用的完善和继续,岩浆浅部就地结晶熔离成矿作用是硅酸盐矿物结晶而导致残余硫化物进一步熔离成矿,而同化混染熔离成矿作用则是含矿岩浆同化混染围岩导致硫化物熔离成矿。但他们在黄山硫化铜镍矿床中所起的作用是不同的,最重要的(1),其次是(2),(3)和(4)则很次要。因此在实际地质找矿工作中应以找“熔离型”矿体为重点,但也要兼顾其它,特别是“贯入型”和“同化混染熔离型”往往构成浅部富矿。In this paper,giving Huang Shan Cu Ni sulfide deposit near Hami city as an example ,authors have inquired into ore-formation mechanism of Cu- Ni sulfide deposit in detail and point out that the ore-formation of Cu-Ni sulfide deposit is very complex,and its liquation ore-formation can be classified into four types obviously; (1)magmatic typhonic liquid liquation ore-formation ; (2)ore magma ore-for-mation;(3)on site shallow magmatic crystallization liquation ore formation and (4)magmatic assimila tion-contamination liquation ore-formation according to the ways of producing immiscibilty metal sulfide and liquation enriching ore-formation. Magmatic typhonic liquid liquation ore-formation acts as an im-portant origin of generation different magmas and preliminary enrichment of Cu,Ni and so on. Ore Magma ore-formation is the complet and continue of magmatic typhonic liquid liquation ore-formation. On site shallow magmatic crystallization liquation ore-formation is that relic sulfides liquize and form ores because of silicate minerals crystallization. However, magmatic assimilation-contamination liquation ore-formation is that sulfides are lent to liquize and further form ores because ore-bearing magma assimilates and contaminates wallrocks. These liquation ore-formations play different roles in Huang Shan Cu -Ni sulfide deposit, the first type is the most important one , the second type is the next important, and the others are the less. So,the key point is to find'liquation type'orebody in our actual work ,but other types should be given consideration ,specially'injection type' and' assimilation-contamination liquation type' be-cause they usually form rich ore in the shallow area of rockbodies.

关 键 词：硫化铜镍矿床 成矿作用 岩浆 矿浆 矿床地质 熔离成矿作用 

分 类 号：P618.410.1[天文地球—矿床学] P618.630.1[天文地球—地质学]