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首页> 外文会议>International Mining Geology Conference; 20031117-20031119; Bendigo; AU >Using Mineralisation Indicators to Estimate Grade in the Structurally Complex, High-Grade Gold Orebody at the Golden Pig Mine, Western Australia
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Using Mineralisation Indicators to Estimate Grade in the Structurally Complex, High-Grade Gold Orebody at the Golden Pig Mine, Western Australia

机译：使用矿化指标估算西澳大利亚州金猪矿的结构复杂的高级金矿体的品位

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摘要

Resource estimation and selective mining of structurally complex, high nugget orebodies presents a major challenge to the Mine Geologist. At the Golden Pig BIF-hosted gold deposit in Western Australia, an estimation method has been developed that replaces an assay-based resource estimate with one based on mineralisation intensity. Subjective coding of the mineralisation intensity has a more robust connection to local grade than drillhole assays. Indicator variograms of the five mineralisation codes are well structured with anisotropy directions similar to observed structural controls. The proportion of each mineralisation code is estimated and a weighted average of the average grade of each code calculated for a block. Initial validation has shown that the model is a good predictor of the mineralisation intensity, and the application of appropriate local average grade for each mineralisation code gives a reliable block grade estimate.
机译：资源估计和对结构复杂的高金块矿体的选择性开采对矿山地质学家提出了重大挑战。在西澳大利亚州的金猪BIF托管的金矿床中，已经开发出一种估算方法，该方法可以将基于化验的资源估算替换为基于矿化强度的估算。矿化强度的主观编码比钻孔分析与本地品位的联系更为牢固。五个矿化代码的指示变量图具有良好的结构，各向异性方向类似于观察到的结构对照。估算每个矿化代码的比例，并为一个区块计算每个代码的平均等级的加权平均值。初步验证表明，该模型可以很好地预测矿化强度，并且为每个矿化代码应用适当的本地平均品位可提供可靠的区块品位估计。

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