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哈萨克斯坦小卡拉套盆地某磷矿床地质特征及成因探讨

Geological Characteristics and Genesis of a Phosphate Deposit in Karatau Basin of Kazakhstan
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摘要 小卡拉套盆地是著名的磷块岩产地,矿层稳定、规模大。矿区位于小卡拉套盆地西北部,含磷岩系属下寒武统楚拉图组(∈_(1)cht),岩性组合为磷块岩夹磷酸盐化页岩、磷酸盐化白云质灰岩或白云岩,矿石自然类型为沉积型磷块岩,矿石矿物主要为胶磷矿,P_(2)O_(5)平均含量为20.03%、酸不溶物平均含量为34.06%,CaO/P_(2)O_(5)比值为1.61,矿石工业类型为钙硅质混合型。矿床成因属大陆边缘浅海相沉积磷块岩矿床。 The karatau Basin is a well-known phosphate mining area with stable thickness and large scale.The mining area is located in the northwestern part of the Karatau basin,and the phosphate ore occurs in the chulatour formation(∈_(1)cht)of the lower Cambrian.The lithology is composed of apatite interbedded with phosphate shale,phosphate dolomite limestone or dolomite.The natural type of ore is sedimentary phosphorite,and the main ore minerals are collophanite.The average content of P_(2)O_(5) is 20.03%,and the average content of acid insoluble substance was 34.06%,CaO/P_(2)O_(5) was 1.61%,the industrial type of ore is calcium-siliceous mixed type.The genesis of the deposit belongs to the continental margin shallow marine sedimentary phosphorite deposit.
作者 王傲雷 夏强 WANG Ao-lei;XIA Qiang(Jiangsu Branch of China National Geological Exploration Center of Building Materials Industry,Nanjing 210000,China)
出处 《中国非金属矿工业导刊》 2021年第6期37-40,共4页 China Non-Metallic Minerals industry
关键词 磷块岩 矿床成因 寒武纪 小卡拉套盆地 phosphate rock genesis of ore deposits cambrian Karatau basin
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