Application of mineral norm calculation in the resource evaluation of the sulphide and non-sulphide Zn-Pb mineralisation of the Florida Canyon MVT deposit, Peru

IF 0.9 Q4 GEOSCIENCES, MULTIDISCIPLINARY

Applied Earth Science-Transactions of the Institutions of Mining and Metallurgy Pub Date : 2019-05-23 DOI:10.1080/25726838.2019.1619057

S. D. de Oliveira, A. A. Saldanha

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引用次数: 5

Abstract

ABSTRACT Both Zn–Pb hypogene sulphide and Zn supergene non-sulphide mineralisation types occur in the Mississippi Valley-type deposit of Florida Canyon, located in northern Peru. The geometry and spatial relationship between the two ore types are very complex to interpret, when it comes to mineral resource evaluation. An algorithm using the Zn, Pb and S contents is proposed for the calculation of sphalerite, galena and non-sulphide norms in the block model after its conventional ordinary kriging estimation. Model validation was performed by comparing the results of the calculations with available SEM/EDS-MLA data. The results show good correlation between the calculated and the quantitative values, thus accrediting the proposed methodology. The algorithm is simple and fast to use and can be applied to mineral resource evaluation of Zn–Pb MVT deposits associated with non-sulphide mineralisation.

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矿产定额计算在秘鲁佛罗里达峡谷MVT矿床硫化物和非硫化物铅锌矿化资源评价中的应用

摘要锌-铅深生硫化物和锌浅生非硫化物矿化类型均发生在秘鲁北部佛罗里达峡谷的密西西比河谷型矿床中。在矿产资源评估中，这两种矿石类型之间的几何形状和空间关系非常复杂。在传统的普通克里格估计之后，提出了一种利用Zn、Pb和S含量计算块段模型中闪锌矿、方铅矿和非硫化物范数的算法。通过将计算结果与可用的SEM/EDS-MLA数据进行比较来进行模型验证。结果表明，计算值与定量值之间具有良好的相关性，从而验证了所提出的方法。该算法使用简单快捷，可用于与非硫化物矿化相关的Zn–Pb MVT矿床的矿产资源评估。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Earth Science-Transactions of the Institutions of Mining and Metallurgy GEOSCIENCES, MULTIDISCIPLINARY-

CiteScore

1.70

自引率

10.00%

发文量