菲律宾迪纳加特岛红土型镍矿床地质特征及找矿勘查方法

通过对菲律宾迪纳加特岛风化壳氧化镍-硅酸镍矿床的成矿地质条件、矿床地质特征、成矿机制的分析和研究,认为矿床是由于超镁铁岩-橄榄岩在中生代、第三纪、第四纪的热带、亚热带气候条件下,经过风化作用,镍从含镍的硅酸盐矿物中淋滤出来,随地表水向下渗透到风化壳的下部,形成富含镍的次生矿物,具有典型的风化壳型硅酸镍矿床特点。找矿勘探工作要在找矿区域进行地质填图及工程取样扫面来确定矿化区。

Geological Features of Lateritic Nickel Deposits and Mineral Exploration Methods in the Dinagat Island, Philippines

Abstract:This paper presents the analysis and investigation to the geological conditions of mineralization, geological features and mineralization mechanism of nickel oxide in weathering crust in the Dinagat Island of Philippines. It is considered that the mineral deposit was formed from the ultramafic rock-peridotite in Mesozoic, Tertiary, and Quaternary times in tropical and subtropical climatic conditions undergoing weathering. The nickels were leached from the silicate minerals and with the infiltration of surface water down to the lower part of the weathering crust. It has a typical shell-type silicate weathering character of nickel deposits. To explore the ore in the prospecting area needs geological mapping and geochemical halo secondary scanning work to determine the mineralization zones