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Mineral resource estimation of the Brockman 4 iron ore deposit in the Pilbara region

机译:皮尔巴拉地区Brockman 4铁矿床的矿产资源估算

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Brockman 4 is a large iron ore deposit hosted by the Brockman Iron Formation in the Pilbara region and is mined by Rio Tinto Iron Ore. Drilling is mainly by the reverse circulation method and samples are taken at 2 m intervals using a rotary cone splitter or historically by riffle splitter. Samples are geologically logged, assayed by X-ray fluorescence for iron, silica, alumina, phosphorus, manganese, sulphur, titanium oxide, calcium oxide, magnesium oxide, and 19 other trace elements; and measured for loss on ignition by thermogravimetric analysis. Mineralisation is estimated by ordinary kriging with unfolding and waste by inverse distance interpolation. The model is validated, reconciled with historic production, classified according to the 2012 Edition of the JORC code and stored in a SQL Server database.
机译:布罗克曼4号是皮尔巴拉地区布罗克曼铁矿的主要铁矿床,由力拓铁矿石开采,主要通过反向循环法进行钻探,每2 m的间隔使用旋转圆锥分流器取样,或者历史上由浅滩拆分器。对样品进行地质记录,并通过X射线荧光分析法测定铁,二氧化硅,氧化铝,磷,锰,硫,氧化钛,氧化钙,氧化镁和其他19种微量元素;并通过热重分析法测量着火损失。矿化是通过普通克里格法估算的,展开和反距离插值法会浪费。该模型经过验证,并与历史生产保持一致,根据JORC代码的2012版进行分类,并存储在SQL Server数据库中。

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