Petrophysical properties of the Lakkeh-Siah iron oxide-apatite mineralization and host rocks

IF 4.3 2区地球科学 Q1 GEOLOGY

Ore Geology Reviews Pub Date : 2026-02-01 Epub Date: 2026-01-29 DOI:10.1016/j.oregeorev.2026.107146

Mohsen Shirkhani , Majid Ghaderi , Nematollah Rashidnejad-Omran

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Abstract

This study investigates the relationship between physical properties, metasomatism, and iron oxide-apatite (IOA) mineralization in the Lakkeh-Siah deposit, located in the Central Iran structural zone. The research integrates petrophysical, geochemical, and geophysical analyses to characterize rock units, assess mineralization controls, and develop an exploration model. The mineralized and metasomatized rocks exhibit higher density (avg. 3458 kg/m³) and magnetic susceptibility (up to 12,000 × 10⁻⁶ SI) than barren sedimentary and volcanic rocks. Calcic metasomatism (actinolite, tremolite, magnetite) enhances magnetic susceptibility, while argillic/sericitic alteration reduces it. Bivariate plots (density vs. susceptibility, Q-ratio) effectively discriminate lithologies and mineralization zones. Borehole logging confirms that high-grade iron zones correlate with elevated magnetic susceptibility and conductivity, influenced by sulfide presence. The study establishes a petrophysical database for exploration, demonstrating that integrated physical property analysis improves targeting accuracy in IOA deposits.

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Lakkeh-Siah氧化铁磷灰石矿化与寄主岩的岩石物理性质

本文研究了伊朗中部构造带Lakkeh-Siah矿床物性、交代作用与氧化铁磷灰石（IOA）矿化的关系。该研究整合了岩石物理、地球化学和地球物理分析，以表征岩石单元，评估矿化控制，并开发勘探模型。矿化和交代岩石的密度（平均3458 kg/m3）和磁化率（高达12000 × 10 - 6 SI）高于贫瘠的沉积岩和火山岩。钙交代作用（放光石、透闪石、磁铁矿）增强磁化率，而泥质/绢云母蚀变则降低磁化率。二元图（密度与磁化率、q比）能有效区分岩性和矿化带。井眼测井证实，受硫化物存在的影响，高品位铁带与磁化率和导电性升高相关。该研究为勘探建立了岩石物性数据库，表明综合物性分析提高了IOA矿床的找准精度。

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

Ore Geology Reviews 地学-地质学

CiteScore

6.50

自引率

27.30%

发文量

546

审稿时长

22.9 weeks

期刊介绍： Ore Geology Reviews aims to familiarize all earth scientists with recent advances in a number of interconnected disciplines related to the study of, and search for, ore deposits. The reviews range from brief to longer contributions, but the journal preferentially publishes manuscripts that fill the niche between the commonly shorter journal articles and the comprehensive book coverages, and thus has a special appeal to many authors and readers.