rusticle
 n.— «Although iron bacteria are of primary importance in extracting the iron that forms the rusticle, the rusticles are composed of a community of perhaps dozens of microbial species.» —“Recent excitement about the Archaea” by Ken F. Jarrell, Douglas P. Bayley, Jason D. Correia, Nikhil A. Thomas BioScience July 1, 1999. (source: Double-Tongued Dictionary)

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