The morphology and quantitative chemical analyses of fifty alluvial gold grains from fourteen studied sites were used to constraint gold deposit type and its implications to exploration in the Abiete-Toko Gold District in South Cameroon. The main results revealed that the gold grains show a core-rim zonation marked by Ag depleted rims as a result of leaching during transportation. The fineness of grains ranges from 826 to 1000 and their composition is almost binary gold-silver. Gold fineness refers to the relative amounts of Ag and Au present, given as a number out of 1000 and defined by Au/(Ag + Au)∗1000. The chemical composition of the gold grains are range as thus: 83.40–100 wt.% Au, 0.07–17.45 wt.% Ag, 0–0.96 wt.% Cu, 0–0.01 wt.% As, 0–0.02 wt.% Ni, 0–0.02 wt.% Co, 0–0.01 wt.% Se, 0–0.08 wt.% Hg and 0.003–0.03 wt.% S. The high sulphur concentrations of the gold grains probably imply primary deposition of gold by sulphidation; The ranges of Ni and Co concentrations suggest an interaction with greenstones. Such findings indicate that the Abiete-Toko area hosts a mesothermal-orogenic gold deposit. Exploration operations must target fractures and contact zones between ironstones, felsic gneiss and greenstones. Soil sampling is not recommended in this orogenic gold district due to the very thick and transported nature of the weathering mantle. Detailed mapping coupled to geophysical surveys are the recommended key exploration methods prior to drilling program.

来自十四个研究地点的五十个冲积金晶粒的形态学和定量化学分析被用于限制金矿床类型及其对喀麦隆南部阿比特－托科金矿区勘探的意义。主要结果表明，由于运输过程中的浸出，金颗粒显示出芯缘带状区域，其特征是贫银边缘。晶粒的细度在826到1000之间，其组成几乎是二元金银。金的纯度是指存在的Ag和Au的相对数量，以相对于1000的数字表示，由Au /（Ag + Au）* 1000定义。因此，金粒的化学成分范围为：83.40–100 wt。％的Au，0.07–17.45 wt。％的Ag，0–0.96 wt。％的Cu，0–0.01 wt。％的As，0–0.02 wt。％的金Ni，0-0.02 wt。％Co，0-0.01 wt。％Se，0-0.08 wt。％Hg和0.003-0.03 wt。％S. 金颗粒中的高硫含量可能暗示着通过硫化作用初步沉积了金。镍和钴的浓度范围暗示了与绿岩的相互作用。这些发现表明Abiete-Toko地区拥有中热造山型金矿床。勘探作业必须针对铁矿，长英质片麻岩和绿岩之间的裂缝和接触带。由于风化地幔非常稠密且易于运输，因此不建议在该造山带金矿区进行土壤采样。在进行钻探程序之前，建议将详细的地图绘制与地球物理勘测相结合是推荐的关键勘探方法。这些发现表明Abiete-Toko地区拥有中热造山型金矿床。勘探作业必须针对铁矿，长英质片麻岩和绿岩之间的裂缝和接触带。由于风化地幔非常稠密且易于运输，因此不建议在该造山带金矿区进行土壤采样。在进行钻探程序之前，建议将详细的地图绘制与地球物理勘测相结合是推荐的关键勘探方法。这些发现表明Abiete-Toko地区拥有中热造山型金矿床。勘探作业必须针对铁矿，长英质片麻岩和绿岩之间的裂缝和接触带。由于风化地幔非常稠密且易于运输，因此不建议在该造山带金矿区进行土壤采样。在进行钻探程序之前，建议将详细的地图绘制与地球物理勘测相结合是推荐的关键勘探方法。