Artículos Técnicos

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

Últimas noticias
  • Publicamos los artículos aceptados para el Simposio Itasca 2020 en Viena. Se recibieron más de 100 artículos para el Quinto Simposio Internacional de Itasca, que se...
    Leer mas
  • Itasca Chile Abre Proceso de Postulación a Prácticas Se abre el proceso de postulación a prácticas verano 2020, se invita a postular a...
    Leer mas
  • Quinto Simposio Internacional de Itasca - Inscripciones Abiertas ...
    Leer mas

Próximos Eventos
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... Leer mas
9 mar.
FLAC Introductory Training - Minneapolis
... Leer mas
16 mar.
FLAC3D Introductory Training - Minneapolis
... Leer mas