Minerals replacement reactions: understanding mineral formation under hydrothermal conditions

矿物置换反应：了解热液条件下矿物的形成

• 批准号: DP0772229
• 负责人: Prof Joel Brugger
• 金额: $ 21.11万
• 依托单位: The University of Adelaide
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2007
• 资助国家: 澳大利亚
• 起止时间: 2007-01-01 至 2009-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP0772229
• 关键词: Minerals; replacement; reactions; understanding; mineral

Many geological processes involve the transformation of one mineral into another. By understanding molecular-level reaction mechanisms, we can predict how fast reactions progress, and what the final product will look like. This project focuses on a reaction mechanism called 'coupled dissolution-reprecipitation', in which the parent mineral is dissolved into a thin layer of fluid at the reaction front, and the daughter mineral subsequently precipitates. This concept will be applied to sulfide minerals for the first time. The results have many applications for the Australian mining industry, in particular in improving the efficiency of the processing of Ni- and Au-ores.

许多地质过程涉及将一种矿物转化为另一种矿物。通过了解分子水平的反应机制，我们可以预测反应进展的速度以及最终产物的外观。该项目重点研究一种称为“耦合溶解-再沉淀”的反应机制，其中母矿物在反应前沿溶解到流体薄层中，子矿物随后沉淀。这一概念将首次应用于硫化物矿物。研究结果对澳大利亚采矿业有许多应用，特别是在提高镍矿石和金矿石加工效率方面。