Lithium ore generation and characterization

锂矿石的生成和表征

• 批准号: 524236-2018
• 负责人: Clark, Ian
• 金额: $ 1.74万
• 依托单位: University of Ottawa
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=647766
• 关键词: Lithium; ore; generation; characterization

Lithium isotope research in support of lithium ore exploration**Vancouver-based Lithium Americas Corp. is developing their wholly owned Lithium Nevada Project at Kings**Valley, hosted in claystones of the Miocene aged McDermitt Caldera in Nevada, USA. This is the largest**known lithium resource in the United States. Currently, lithium mining focuses on enriched brines from**evaporative basins in volcanic terrains or on lithium-rich pegmatite deposits. The Kings Valley deposit in clays**offers an abundant and interesting alternative that is attracting attention from exploration companies. This work**will test the model that the lithium in these clays has accumulated following the leaching of Li-enriched**rhyolitic lavas and ignimbrites formed during the eruption of an ancient supervolcano. The resulting collapse**structure of a supervolcano like the McDermitt Caldera created a basin for sediments and leached Li to**accumulate following transport via meteoric water and hydrothermal fluids. A field and laboratory program is**proposed to document lithium isotope anomalies and relationships with lithium concentration to explain the**spatial variability of lithium concentrations in the deposit. This proposed research will be using isotope and**geochemical techniques that have been developed in the University of Ottawa geoscience laboratories, to build**an ore genesis model that will help focus exploration and mining activities at the site.

支持锂矿勘探的锂同位素研究 ** 总部位于弗吉尼亚州的Lithium Americas Corp.正在开发其全资拥有的位于Kings**Valley的Lithium内华达州项目，该项目位于美国内华达州中新世McDermitt Caldera的粘土岩中。这是美国已知的最大的锂资源。目前，锂矿开采的重点是火山地形中蒸发盆地的富集卤水或富锂伟晶岩矿床。国王谷的粘土存款 ** 提供了一个丰富和有趣的选择，吸引了勘探公司的注意。这项工作 ** 将测试的模型，这些粘土中的锂积累了以下的富含锂的流纹熔岩和熔结凝灰岩的浸出过程中形成的一个古老的超级火山爆发。像麦克德米特火山口这样的超级火山产生的坍塌结构为沉积物创造了一个盆地，并通过大气降水和热液流体的运输使锂浸出并积累。提出了一个野外和实验室方案，以记录锂同位素异常及其与锂浓度的关系，从而解释存款中锂浓度的空间变异性。这项拟议的研究将使用渥太华大学地球科学实验室开发的同位素和 ** 地球化学技术，以建立 ** 一个矿石成因模型，这将有助于集中在该地点的勘探和采矿活动。