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Re: Reduced iron in substrate?
- To: Aquatic-Plants at actwin_com
- Subject: Re: Reduced iron in substrate?
- From: Paul Sears <psears at nrn1_NRCan.gc.ca>
- Date: Tue, 14 Jul 1998 09:38:30 -0400 (EDT)
- In-Reply-To: <199807131948.PAA26384 at acme_actwin.com> from "Aquatic Plants Digest" at Jul 13, 98 03:48:01 pm
> From: Dave Gomberg <gomberg at wcf_com>
> Subject: Reducing diet
> Where there had been laterite below the gravel, there was now a mixture of
> and COMPLETELY REDUCED IRON. It looked like tiny iron filings.
What makes you think it was iron metal? Did it rust in water
> I am pretty sure this black stuff was not a sulphur compound (tho it could
> have been FeS)
> because it was very dense.
Magnetite (Fe3O4) is black, magnetic and dense. There are also
several iron/sulphur phases that fit those criteria.
Paul Sears Ottawa, Canada