Mechanism and duration of banding in Mississippi Valley-type sphalerite

Sergei Katsev, Ivan L'Heureux, Anthony D. Fowler

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


We present a new quantitative model of mm-scale Fe-Zn banding in sphalerite Mississippi-Valley type ore deposits. The banded sphalerite is typically intergrown with dendritic galena in cm-scale clusters. We show that this pattern may arise due to a combined effect of geochemical reactions, crystal growth, dissolution, and ripening in far-from-equilibrium conditions. The simulated patterns are due to a self-propagating sequence of growth and dissolution events (so called coarsening wave). One of the surprising results is the geologically short time scale of the pattern formation.

Original languageEnglish (US)
Pages (from-to)4643-4646
Number of pages4
JournalGeophysical Research Letters
Issue number24
StatePublished - Dec 15 2001

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Copyright 2008 Elsevier B.V., All rights reserved.


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