Mineralogy of Certain Pyrite Concretions from Israel and Their Alteration Products

E. Sass, Y. Nathan and A. Nissenbaum
Department of Geology, The Hebrew University of Jerusalem, Israel

Summary: Pyrite concretions from an arid area of Southern Israel are described. The alteration products include alunite, gypsum, jarosite, baryte, celestine, goethite, hematite, sulphur, and sideronatrite. Sideronatrite is described in detail. The pyrite alteration is considered to be recent and the sideronatrite is preserved owing to climatic aridity. The puzzling appearance of sulphur is tentatively explained by microbiological reduction of the sulphates.

Mineralogical Magazine; March 1965 v. 35; no. 269; p. 84-87; DOI: 10.1180/minmag.1965.035.269.11
© 1965, The Mineralogical Society
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