Basalt & komatiite analyses, Agnew-Wiluna belt, Yilgarn, Australia

The aim of obtaining the data was to help constrain the stratigraphy of the Archean Agnew-Wiluna greenstone belt, Yilgarn Craton, Western Australia. Basalt samples were collected from the Cliffs (n=12) & Mount Keith (n=34) Ni deposits and the area around the Wiluna Au mines (n=25). In addition 6 samples from a 54 m intersection of mafic schists hosted within dacitic schists in the eastern-most felsic sequence at Albion Downs. All analyses were undertaken by Bureau Veritas (Ultratrace), Perth, Western Australia with major, minor and the trace elements Cl, Cr, Ni, S, and Zn determined by X-ray florescence. Au, Pd and Pt were analysed by Lead Collection Fire Assay-ICP-MS, LOI by gravimetry after ignition at 1000oC, and all other elements, including REE, by Fused Bead Laser Ablation ICP-MS.

本数据集的采集目的在于约束西澳大利亚伊尔冈克拉通（Yilgarn Craton）太古宙阿格纽-维卢纳绿岩带（Archean Agnew-Wiluna greenstone belt）的地层格架。研究人员从克利夫斯（Cliffs）镍矿床（样本量n=12）、基思山（Mount Keith）镍矿床（样本量n=34）以及维卢纳金矿（Wiluna Au mines）周边区域（样本量n=25）采集了玄武岩样品。此外，于阿尔比恩当斯（Albion Downs）最东部的长英质岩层序列中，采集了6件赋存于英安质片岩内的镁铁质片岩54米连续段样品。所有分析测试均由西澳大利亚珀斯必维国际检验集团（Bureau Veritas, Ultratrace）完成：主量、微量组分及氯（Cl）、铬（Cr）、镍（Ni）、硫（S）、锌（Zn）等微量元素采用X射线荧光光谱法（X-ray florescence）测定；金（Au）、钯（Pd）、铂（Pt）采用铅集火试金-电感耦合等离子体质谱法（Lead Collection Fire Assay-ICP-MS）测定；烧失量（LOI）通过1000℃灼烧后的重量法测定；其余所有元素（包括稀土元素REE）均采用熔珠激光剥蚀电感耦合等离子体质谱法（Fused Bead Laser Ablation ICP-MS）测定。