新疆地质
新疆地質
신강지질
XINJIANG GEOLOGY
2001年
1期
49-53
,共5页
新疆%南天山东段%独山锡矿床%钾长花岗斑岩%热液充填交代
新疆%南天山東段%獨山錫礦床%鉀長花崗斑巖%熱液充填交代
신강%남천산동단%독산석광상%갑장화강반암%열액충전교대
通过对渗沙水锡矿点宏、微观研究,否定了原矽卡岩型锡矿的成因观点,提出锡矿化与早二叠世末碱长花岗岩侵入和热液充填交代有关,矿化受断裂破碎构造控制。以此新观点为指导,我们在南天山东段首次发现了与早二叠世末钾长花岗斑岩有关的成型锡矿床--独山锡矿床。从蚀变、矿期活动及矿石中锡的存在形式等方面对该矿床进行了详细研究,确定了该矿床的形成包括锡石-泥晶碳酸盐充填交代、锡石-石英-铁矿物充填及锡石-石英-硫化物充填3个成矿阶段。根据稳定同位素、稀土特征对矿床成因进行了探讨,并建立了矿床成矿模式。
通過對滲沙水錫礦點宏、微觀研究,否定瞭原矽卡巖型錫礦的成因觀點,提齣錫礦化與早二疊世末堿長花崗巖侵入和熱液充填交代有關,礦化受斷裂破碎構造控製。以此新觀點為指導,我們在南天山東段首次髮現瞭與早二疊世末鉀長花崗斑巖有關的成型錫礦床--獨山錫礦床。從蝕變、礦期活動及礦石中錫的存在形式等方麵對該礦床進行瞭詳細研究,確定瞭該礦床的形成包括錫石-泥晶碳痠鹽充填交代、錫石-石英-鐵礦物充填及錫石-石英-硫化物充填3箇成礦階段。根據穩定同位素、稀土特徵對礦床成因進行瞭探討,併建立瞭礦床成礦模式。
통과대삼사수석광점굉、미관연구,부정료원석잡암형석광적성인관점,제출석광화여조이첩세말감장화강암침입화열액충전교대유관,광화수단렬파쇄구조공제。이차신관점위지도,아문재남천산동단수차발현료여조이첩세말갑장화강반암유관적성형석광상--독산석광상。종식변、광기활동급광석중석적존재형식등방면대해광상진행료상세연구,학정료해광상적형성포괄석석-니정탄산염충전교대、석석-석영-철광물충전급석석-석영-류화물충전3개성광계단。근거은정동위소、희토특정대광상성인진행료탐토,병건립료광상성광모식。
Based on micro and macro-scopic researches, the pre-existinghypothesis that the genesis of Shenshashui Sn deposit belongs to skarn-type is denied. It is proposed that the Sn mineralizations are linked to the intrusion of the early Permian alkali granite and filling of thermal solutions, and are also controlled by faults and fracture zones. Directed by this new viewpoint, we discovered the Dushan Sn deposit which is related to early Permian K-feldspar granite porphyry in the eastern part of the south Tianshan Mountain for the first time. Though detailed researches have been done on alterations, activities of metallogenic period and existing forms of Sn in ores,three metallogenic stages of the deposit have been determined, namely cassiterite-and carbonate metasomatism-filling stage, cassiterite-quartz-iron minerals filling stage, and cassiterite-quartz - sulfides filling stage. According to the features of stable isotopes and rare earth elements, the genesis of the deposit is discussed and the metallogenic model for the deposit is established.