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Arsenic and mercury contamination related to historical gold mining in the Sierra Nevada, California

机译:加利福尼亚州内华达山脉历史金矿有关的砷和汞污染

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摘要

Arsenic (As) is a naturally occurring constituent in low-sulphide gold-quartz vein deposits, the dominant deposit type for lode mines in the Sierra Nevada Foothills (SNFH) gold (Au) province of California. Concentrations of naturally occurring mercury (Hg) in the SNFH Au province are low, but extensive use and loss of elemental Hg during amalgamation processing of ore from lode and placer Au deposits led to widespread contamination of Hg in the Sierra Nevada foothills and downstream areas, such as the Sacramento-San Joaquin Delta and San Francisco Bay. This review paper provides an overview of As and Hg contamination related to historical Au mining in the Sierra Nevada of California. It summarizes the geology, mineralogy, and geochemistry of the Au deposits, and provides information on specific areas where detailed studies have been done in association with past, ongoing, and planned remediation activities related to the environmental As and Hg contamination.
机译:砷(AS)是一种天然存在的低硫化物金 - 石英静脉沉积物,塞拉尼达山麓(SENFH)金(AU)省的莱德矿山的主要沉积物类型。 SNFH AU省内天然存在的汞(HG)的浓度低,但矿石矿床矿石矿床和置剂AU沉积物中的元素HG的广泛使用和丧失导致塞拉尼达山麓和下游地区的汞污染, 如萨克拉门托 - 圣Joaquin Delta和旧金山湾。 本文概述了与加利福尼亚州内华达州内华达州的历史AU采矿有关的AS和HG污染概述。 它总结了AU存款的地质,矿物学和地球化学,并提供了有关与过去,持续和计划的详细活动与环境为和HG污染有关的详细研究的具体领域的信息。

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