粤北锑矿床基本地质特征及其硅化蚀变
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摘要
本文所探讨的硅化作用是指经常看到的锑汞矿床中以碳酸盐岩等的围岩热液蚀变为主,主要是将未蚀变的岩石与蚀变产生的硅化岩的化学成分进行比较,证明是否有明显的物质置换。根据有锑矿必有硅(矽)化岩,没有硅化的灰岩就没有锑矿;含锑矿围岩地质年代不同;硅化岩与围岩整合;在白毛岭的硅化岩中发现腕足类化石;在葛藤坪、观音坐莲等地发现有石英小脉侵入灰岩裂缝中,有残余的未硅化岩体小块灰岩存在于邓家岭(乐家湾)和东官冲的硅化岩中,认为这种硅化岩不是由砂岩变质而来的"石英岩",此种硅化作用与锑矿生成有密切关系。
The silicification discussed in this paper refers to the hydrothermal alteration of surrounding rocks such as carbonate rocks in antimony-mercury deposits. The chemical composition of unaltered rocks is compared with that of altered silicified rocks, which proves that there is obvious material replacement. According to the fact that there must be silicified rocks in antimony deposits, there will be no antimony deposits in limestone without silicification; the geological age of Antimony-bearing surrounding rocks is different; silicified rocks are integrated with surrounding rocks; brachiopods are found in silicified rocks in Baimaoling; quartz veins are found to intrude into limestone fractures in Getengping and Guanyinzilian, and small pieces of limestone remain in unsilicified rocks are found. The rocks exist in the silicified rocks of Dengjialing(Lejiawan) and Dongguanchong. It is believed that the silicified rocks are not "quartzite" derived from sandstone metamorphism. This silicification is closely related to the formation of antimony deposits.
The silicification discussed in this paper refers to the hydrothermal alteration of surrounding rocks such as carbonate rocks in antimony-mercury deposits. The chemical composition of unaltered rocks is compared with that of altered silicified rocks, which proves that there is obvious material replacement. According to the fact that there must be silicified rocks in antimony deposits, there will be no antimony deposits in limestone without silicification; the geological age of Antimony-bearing surrounding rocks is different; silicified rocks are integrated with surrounding rocks; brachiopods are found in silicified rocks in Baimaoling; quartz veins are found to intrude into limestone fractures in Getengping and Guanyinzilian, and small pieces of limestone remain in unsilicified rocks are found. The rocks exist in the silicified rocks of Dengjialing(Lejiawan) and Dongguanchong. It is believed that the silicified rocks are not "quartzite" derived from sandstone metamorphism. This silicification is closely related to the formation of antimony deposits.
引文
[1]秦善.粤北乐家湾锑矿床中辉锑矿特征[J].北京大学地质系,1989,4(35):342-348.
[2]曹建劲.乐家湾锑矿床元素地球化学特征及其地质意义[R].中山大学地球科学系,2000:402-408.
[3]广东省地质矿产局.广东省区域地质志[M].北京:地质出版社,1988.
[4]张国林,谷湘平.中国主要类型锑矿床氢、氧、碳同位素组成及地球化学特征[J].地质地球化学,1999,27(3):23-29.
[5]裴太昌.韶关—乳源地区内生金属矿产控矿因素及成矿规律初步分析[J].矿产与地质,1990(3):1-10.
[6]彭建堂.锑的大规模成矿与超常富集基质[J].中国科学院地球化学研究所,2000.
[7]乌家达,尚启明,赵守耿.中国锑矿床[M].北京:地质出版社,1998.
[8]张国林,姚金炎,谷湘平.中国锑矿床类型及时空分布规律[J].矿产与地质,1998,12(5)306-311.
[9]王吉勇,许国明,陈慕天,等.大渡河地区三碉金矿床地质特征及成因[J].四川有色金属,2016(04)
[2]曹建劲.乐家湾锑矿床元素地球化学特征及其地质意义[R].中山大学地球科学系,2000:402-408.
[3]广东省地质矿产局.广东省区域地质志[M].北京:地质出版社,1988.
[4]张国林,谷湘平.中国主要类型锑矿床氢、氧、碳同位素组成及地球化学特征[J].地质地球化学,1999,27(3):23-29.
[5]裴太昌.韶关—乳源地区内生金属矿产控矿因素及成矿规律初步分析[J].矿产与地质,1990(3):1-10.
[6]彭建堂.锑的大规模成矿与超常富集基质[J].中国科学院地球化学研究所,2000.
[7]乌家达,尚启明,赵守耿.中国锑矿床[M].北京:地质出版社,1998.
[8]张国林,姚金炎,谷湘平.中国锑矿床类型及时空分布规律[J].矿产与地质,1998,12(5)306-311.
[9]王吉勇,许国明,陈慕天,等.大渡河地区三碉金矿床地质特征及成因[J].四川有色金属,2016(04)