Tracing low-temperature aqueous metal migration in mineralized watersheds with Cu isotope fractionation

R. Mathur, L. A. Munk, B. Townley, K. Y. Gou, N. Gómez Miguélez, S. Titley, G. G. Chen, S. Song, M. Reich, F. Tornos, Joaquin Ruiz

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Copper isotope signatures in waters emanating from mineralized watersheds provide evidence for the source aqueous copper in solution. Low-temperature aqueous oxidation of Cu sulfide minerals produces significant copper isotopic fractionation between solutions and residues. Abiotic experimental data of fractionation (defined as δliquid-solid ‰=δ65Culiquid65Cusolid) are on the order of 1-3‰ and are unique for copper rich-sulfide minerals. Data presented here from ores and waters within defined boundaries of porphyry copper, massive sulfide, skarn, and epithermal ore deposits mimic abiotic experiments. Thus, the oxidation of sulfide minerals appears to cause the signatures in the waters although significant biological, temperature, and pH variations exist in the fluids. Regardless of the deposit type, water type, concentration of Cu in solution, or location, the data provide a means to trace sources of metals in solutions. This relationship allows for tracking sources and degree of metal migration in low temperature aqueous systems and has direct application to exploration geology and environmental geochemistry.

Original languageEnglish (US)
Pages (from-to)109-115
Number of pages7
JournalApplied Geochemistry
Volume51
DOIs
StatePublished - Dec 1 2014
Externally publishedYes

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Fractionation
Watersheds
Isotopes
Copper
Sulfide minerals
fractionation
Metals
watershed
isotope
copper
metal
Water
sulfide
mineral
Temperature
Ore deposits
oxidation
Oxidation
water
Geochemistry

ASJC Scopus subject areas

  • Environmental Chemistry
  • Pollution
  • Geochemistry and Petrology

Cite this

Tracing low-temperature aqueous metal migration in mineralized watersheds with Cu isotope fractionation. / Mathur, R.; Munk, L. A.; Townley, B.; Gou, K. Y.; Gómez Miguélez, N.; Titley, S.; Chen, G. G.; Song, S.; Reich, M.; Tornos, F.; Ruiz, Joaquin.

In: Applied Geochemistry, Vol. 51, 01.12.2014, p. 109-115.

Research output: Contribution to journalArticle

Mathur, R, Munk, LA, Townley, B, Gou, KY, Gómez Miguélez, N, Titley, S, Chen, GG, Song, S, Reich, M, Tornos, F & Ruiz, J 2014, 'Tracing low-temperature aqueous metal migration in mineralized watersheds with Cu isotope fractionation', Applied Geochemistry, vol. 51, pp. 109-115. https://doi.org/10.1016/j.apgeochem.2014.09.019
Mathur, R. ; Munk, L. A. ; Townley, B. ; Gou, K. Y. ; Gómez Miguélez, N. ; Titley, S. ; Chen, G. G. ; Song, S. ; Reich, M. ; Tornos, F. ; Ruiz, Joaquin. / Tracing low-temperature aqueous metal migration in mineralized watersheds with Cu isotope fractionation. In: Applied Geochemistry. 2014 ; Vol. 51. pp. 109-115.
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