Technische Unterlagen

Neutral mine drainage water-quality impacts from a form taconite mine

Abstract:

Surface waters at the site of a former Minnesota taconite mine were reported to have solute concentrations elevated with respect to water-quality standards. Waste rock and ore generated from past mining were primarily from open pit mining of the Biwabik Iron Formation (BIF). The BIF is a variably bedded iron formation composed of inter-bedded cherty and slaty iron silicate and iron carbonate rich beds. A geochemical characterization was conducted to identify potential constituents of interest (COI), facilitate understanding of mechanisms controlling their environmental behavior at the site, and guide future site activities. Primary COI were determined to be SO4, hardness (predominately from Mg), alkalinity, Fe, Mn, and Al. BIF waste rock from the Lower Slaty members appears to be the primary source for the identified COI. Mechanisms of release are primarily attributed to pyrite oxidation and subsequent neutralization by dissolution of mixed-composition (Ca-, Mg-, Fe-, Mn-bearing) siderite and ankerite.

Citation:

Hanna, B. “Neutral Mine Drainage Water-Quality Impacts from a Former Taconite Mine,” in Tailings and Mine Waste ’10, pp. 241-252. CRC Press, 2010.Hanna, B. “Neutral Mine Drainage Water-Quality Impacts from a Former Taconite Mine,” in Tailings and Mine Waste ’10, pp. 241-252. CRC Press, 2010.

Authors:

Braden Hanna

Link to Full Text:

Water Quality Impacts of Mine Drainage.pdf

Neuesten Nachrichten
  • ITASCA Information Day We are happy to announce that this year we can finally offer an Itasca Information...
    Weiterlesen
  • Itasca Software now Available for Linux Version 7 or greater of Itasca software (FLAC3D, 3DEC, PFC3D, and PFC2D) are now operable...
    Weiterlesen
  • Itasca Celebrates 40 Years Itasca is celebrating 40 years of solving geomechanical and hydrogeological challenges through engineering and computer...
    Weiterlesen

Kommende Veranstaltungen
23 Jun
Online Live Training : Python in Itasca Software
This course provides an overview of the Python programming language in Itasca software. The course covers major applications of Python ... Weiterlesen
12 Sep
EUROCK 2022
The conference will feature two main tracks: the scientific track and the industrial track. The presentations will be arranged in gener... Weiterlesen