尼日利亚西北部库巴地区重矿精矿中钛铁矿与磁铁矿比例对金矿找矿的指导意义

Journal of African Earth Sciences (and the Middle East) Pub Date : 1993-11-01 DOI:10.1016/0899-5362(93)90013-G

J.M. El-Nafaty

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引用次数: 3

摘要

对尼日利亚西北部安卡片岩带水系沉积物中的重矿物精矿进行了钛铁矿、磁铁矿和金含量测定。发现钛铁矿与磁铁矿比例高的样品与金异常之间存在空间关系。钛铁矿可能是在相对较低的温度下由铝尖晶石-磁铁矿析出形成的，与金的动员阶段相同。

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The ilmenite: magnetite ratio in heavy mineral concentrates as a guide for gold exploration, Kuba Area, Northwest Nigeria

Heavy mineral concentrates from stream sediments in the Anka schist belt of NW Nigeria were examined for their ilmenite, magnetite and gold contents. A spatial relationship was found between samples with high ilmenite: magnetite ratios and gold anomalies. The ilmenite may have formed at relatively low temperatures from ulvo-spinel-magnetite exsolution at the same stage of gold mobilization.

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Journal of African Earth Sciences (and the Middle East)

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