| 罗布泊低品位光卤石矿分布特点及其找矿规律探讨 |
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| 引用本文： | 李文学.罗布泊低品位光卤石矿分布特点及其找矿规律探讨[J].化工矿产地质,2016(2):93-98. |
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| 作者姓名： | 李文学 |
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| 作者单位： | 国投新疆罗布泊钾盐有限责任公司矿产资源部,新疆哈密,839000 |
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| 摘 要： | 罗布泊干盐湖位于新疆塔里木盆地东部。1995年以来,在罗布泊发现了超大型规模卤水钾盐矿床,卤水钾盐资源主要赋存于罗北凹地等盐系地层中。近年来调查发现,罗布泊分布有地堑式张性断陷带,不仅控制成钾凹地的形成,其本身也蕴藏有一定规模的固体钾盐资源。地球物理(EH-4)测量显示,断陷带深达1 000 m。在罗布泊盐湖演化过程中,断陷带内出现较小规模的洼地或盐湖,湖表水蒸发浓缩形成卤水,由于罗布泊地堑式断陷带长达30~50 km,向下延长深度可达1000 m,说明罗布泊断陷带内可以形成和储集一定规模的固体钾盐矿,成为今后罗布泊盐湖钾资源扩大找矿的新空间。
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| 关 键 词： | 断陷带 分布特点 低品位光卤石矿 |
DISTRIBUTION CHARACTERISTICS AND MINING LAWS DISCUSSION OF THE LOW-GRADE CARNALLITE IN LOP NUR |
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| Abstract: | The Lop Nur playa is located in the eastern Tarim Basin, Xinjiang. Since 1995, a superlarge brine potash deposit had been found in the Lop Nur and the brines are mainly stoerd in salt strata in the Luobei sag. In recent years, researchers have found that graben fault depression zones are developed in Lop Nur, which not only controlled the formation of the potassium depression, but also contained a certain amount of solid potash resources. Geophysical measurements (EH - 4) showed that the rift zone can be as deep as 1000 m. During the evolution of the Lop Nur salt lake, there were smaller depressions or salt lakes existed in the faulted belt. The surface water evaporated and concentrated into brines. As the graben faulted belt can be up to 30 ~ 50 km at length, extending to 1000m at depth, the faulted zones can form and reserve a certain scale of solid potash ore, which should become the new prospecting area in Lop Nur for more potash resources in the future. |
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| Keywords: | fault depression zone distribution characteristics low-grade carnallite |
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