Re: NANFA-L-- Killer Rain, Stratification, H2S

dlmcneely at
Fri, 09 Sep 2005 10:12:57 -0500

iron sulfide is black. people often see black ppt in mud and mistake
it for organic material, but most frequently it is iron sulfide. it
forms when protein containing material decomposes and releases sulfur
under reducing conditions and in the presence of iron. it is
ubiquitous in anaerobic muds. if H2S is there, FeS is almost certainly
there, too.


David L. McNeely, Ph.D., Professor of Biology
Langston University; P.O. Box 1500
Langston, OK 73050; email: dlmcneely at
telephone: (405) 466-6025; fax: 405) 466-3307
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