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
  • User Defined constitutive Models (UDM) Auf unserer Homepage finden Sie jetzt eine neue Zusammenstellung von ausgewählten User Defined constitutive Models....
    Weiterlesen
  • FLAC3D 7.0 Erfahren Sie mehr über die neuen Funktionen von FLAC3D Version 7.0....
    Weiterlesen
  • PFC 6.0 Erfahren Sie mehr über die neuen Funktionen von PFC 6.0....
    Weiterlesen

Kommende Veranstaltungen
17 Feb
Itasca Symposium 2020
The Fifth International Itasca Symposium will be held at the University of Vienna (Austria). The Symposium will features the applicatio... Weiterlesen
9 Mär
FLAC Introductory Training - Minneapolis
... Weiterlesen
16 Mär
FLAC3D Introductory Training - Minneapolis
... Weiterlesen