Technical Papers

A Calibrated Predictive Geochemical Model of Leaching and Attenuation Reactions in a Mine Pit Lake

Abstract:

A geochemical model was developed to predict future water quality of the Cove pit lake in support of site closure and regulatory permitting. The terminal, groundwater-fed Cove pit lake began filling in 2001, and water-quality samples from the 15-year filling period were used to calibrate the pit-lake model and evaluate the accuracy of the predictions. Inputs to the pit-lake model included geochemical characterization results and a calibrated groundwater flow model. Modeling included the processes of mineral dissolution and precipitation, gas exchange, and adsorption. The results of the geochemical model assess long-term chemogenetic effects on water quality and, overall, closely match observed chemistry for a variety of constituents. This work highlights the applicability of various geochemical datasets to predictive modeling, evaluates discrepancies between observed and predicted water quality, and presents geochemical modeling techniques used to achieve predictions that are both representatives of observed water quality and useful for evaluating future pit-lake chemistry.

Citation:

Hanna, B.T, Newman, C.P., Sterrett, R.J. “A Calibrated Predictive Geochemical Model of Leaching and Attenuation Reactions in a Mine Pit Lake,” in Tailings and Mine Waste ’16, CRC Press, 2016

Authors:

Braden Hanna

Robert Sterrett

Link to Full Text:

Pit-Lake Geochemical Model.pdf

Latest News
  • New ICG General Manager Itasca Consulting Group, Inc. is pleased to announce that Dr. Tryana Garza-Cruz is now our...
    Read More
  • COVID-19 Pandemic Response In this exceptional time of the COVID-19 pandemic, Itasca International and its offices worldwide are...
    Read More
  • ITASCA is pleased to announce the release of InSite v3.16 ITASCA is pleased to announce the release of InSite v3.16...
    Read More

Upcoming Events
6 Apr
2020 SME MN Conference
The 93rd Annual Meeting of the Minnesota Section of SME is THE top performing regional minerals conference in the Midwest. Featuring a ... Read More
6 Apr
PFC Introductory Training-Minneapolis - CANCELED
This four-day course provides guidance in the use of the PFC2D and PFC3D to simulate the mechanical behavior of granular and solid mate... Read More
20 Apr
3DEC and UDEC Introductory Training, CANCELED
An introduction to UDEC and 3DEC for application to geotechnical analysis.... Read More