Secondary mineral formation and trace-element reservoirs in weathered waste rock: Integration of quantitative mineralogy and conventional mineralogical techniques
Lianna J.D. Smith , Dogan Paktunc , David W. Blowes
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引用次数: 0
Abstract
Sulfide minerals and secondary minerals associated with sulfide oxidation were characterized using automated quantitative mineralogy techniques in samples of weathered and freshly blasted waste rock from the Detour Lake Mine, Ontario, Canada. Associations and mineral habits of secondary minerals suggest heterogeneous and dynamic geochemical conditions within the historical waste-rock pile, and the formation of secondary minerals in microenvironments associated with oxidizing sulfide minerals. Electron-probe microanalyses of sulfide grains and alteration rims applied to the modal mineralogy determined by quantitative mineralogy permitted a calculation of trace elements in these reservoirs. The calculations revealed an under-estimation of trace elements by quantitative mineralogy when mass-balance calculations were considered.
期刊介绍：
Journal of Geochemical Exploration is mostly dedicated to publication of original studies in exploration and environmental geochemistry and related topics.
Contributions considered of prevalent interest for the journal include researches based on the application of innovative methods to:
define the genesis and the evolution of mineral deposits including transfer of elements in large-scale mineralized areas.
analyze complex systems at the boundaries between bio-geochemistry, metal transport and mineral accumulation.
evaluate effects of historical mining activities on the surface environment.
trace pollutant sources and define their fate and transport models in the near-surface and surface environments involving solid, fluid and aerial matrices.
assess and quantify natural and technogenic radioactivity in the environment.
determine geochemical anomalies and set baseline reference values using compositional data analysis, multivariate statistics and geo-spatial analysis.
assess the impacts of anthropogenic contamination on ecosystems and human health at local and regional scale to prioritize and classify risks through deterministic and stochastic approaches.
Papers dedicated to the presentation of newly developed methods in analytical geochemistry to be applied in the field or in laboratory are also within the topics of interest for the journal.
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