Structure and growth mechanism of mineral dendrites

B. Chopard, H. J. Herrmann, T. Vicsek

Research output: Contribution to journalArticle

55 Citations (Scopus)

Abstract

THE surfaces of limestones are often marked by black or red-brown deposits known as mineral dendrites1,2. These are deposits of hydrous iron or manganese oxides formed when supersaturated solutions of iron or manganese penetrate the limestone and are precipitated on exposure to air at the surface. Mineral dendrites have a fractal3 appearance, but the origin and characteristics of this morphology, and its dependence on concentration gradients or reaction rates have been little studied. Here we analyse the shapes and fractal properties of mineral dendrites from several different origins, and propose a lattice reaction-diffusion model for their formation. The model shows how different reaction conditions can account for the variation in fractal dimension observed in real dendrites.

Original languageEnglish
Pages (from-to)409-412
Number of pages4
JournalNature
Volume353
Issue number6343
Publication statusPublished - Oct 3 1991

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mineral
limestone
manganese oxide
reaction rate
iron oxide
manganese
iron
air
exposure

ASJC Scopus subject areas

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Chopard, B., Herrmann, H. J., & Vicsek, T. (1991). Structure and growth mechanism of mineral dendrites. Nature, 353(6343), 409-412.

Structure and growth mechanism of mineral dendrites. / Chopard, B.; Herrmann, H. J.; Vicsek, T.

In: Nature, Vol. 353, No. 6343, 03.10.1991, p. 409-412.

Research output: Contribution to journalArticle

Chopard, B, Herrmann, HJ & Vicsek, T 1991, 'Structure and growth mechanism of mineral dendrites', Nature, vol. 353, no. 6343, pp. 409-412.
Chopard B, Herrmann HJ, Vicsek T. Structure and growth mechanism of mineral dendrites. Nature. 1991 Oct 3;353(6343):409-412.
Chopard, B. ; Herrmann, H. J. ; Vicsek, T. / Structure and growth mechanism of mineral dendrites. In: Nature. 1991 ; Vol. 353, No. 6343. pp. 409-412.
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