hydrotroilite

hydrotroilite

[‚hī·drō′trȯi‚līt]
(mineralogy)
FeS· n H2O A black, finely divided colloidal material reported in many muds and clays; thought to be formed by bacteria on bottoms of marine basins.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
No iron sulfides (e.g., hydrotroilite; FeS x n[H.sub.2]O) were detected, presumably due to the low pH of the mine water even at depth.
These beds are overlain by black or dark-grey clay containing hydrotroilite. The Yoldia Sea deposits have formed under freshwater conditions.
The Ancylus Lake deposits, ranging in thickness from some centimetres to 4-5 m, begin with the so-called lower hydrotroilite bed having a distinct undulating lower boundary (discontinuity surface).