塞梅诺夫水热场 (13°30'N),中大西洋山脊的铁氧化沉积物:对形成,改造和资源潜力的洞察
Christian S Bishop1, Anna Lichtschlag2, Stephen Roberts1
1School of Ocean and Earth Science, University of Southampton, Southampton, UK.
Mineralium deposita
|February 2, 2026
概括
海底巨大的硫化物沉积物中的二次铁氧化 (FeOOH) 可以成为一种有价值的金属资源. 这项研究表明FeOOH充当金属陷,有助于铜和的勘探.
科学领域:
- 海洋地质学和地球化学
- 经济地质学 经济地质学
- 矿产勘探 矿产勘探 矿产勘探 矿产勘探
背景情况:
- 二级铁氧化水氧化物 (FeOOH) 是由海底大硫化物 (SMS) 沉积物中的硫化物氧化形成的.
- 这些二次沉积物可以以铜 (Cu) 和 (Zn) 等贵金属进行丰富.
- 了解形成后金属缩和区分初级和二级FeOOH至关重要.
研究的目的:
- 在SMS沉积物中研究二次FeOOH的形成后金属演变.
- 要区分金属贫乏的初级FeOOH和金属丰富的二次FeOOH.
- 评估二次FeOOH作为金属资源和勘探载体的潜力.
主要方法:
- 来自塞梅诺夫水热田的FeOOH沉积物的地化学分析,中大西洋山脊.
- 主要和次要FeOOH的纹理和形态特征.
- 与陆地gossan形成和金属清理过程进行比较.
主要成果:
- 在Semenov的初级FeOOH是金属贫的 (<0.4重量%Cu+Ni+Zn),形成了分层结构.
- 二次性FeOOH是丰富的 (平均值为Cu). 2.40重量% Cu) 具有不同的形态,从硫化原石中继承.
- 二次FeOOH充当金属陷,显示Cu含量与底层硫化物之间的相关性,建议将其用作勘探载体.
结论:
- 在SMS矿床的二次FeOOH是一个重要的金属资源,特别是铜.
- 二次FeOOH的金属含量是稳定的,这表明较旧的沉积物可能仍然保留有价值的金属.
- 二次FeOOH可以作为地化学指标,指导SMS矿床的勘探.
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