What's the difference between goethite and gothite?
Goethite
Definition:
(n.) A hydrous oxide of iron, occurring in prismatic crystals, also massive, with a fibrous, reniform, or stalactitic structure. The color varies from yellowish to blackish brown.
Example Sentences:
(1) This can be understood in terms of the microcrystalline goethite structure of the cores as indicated by electron diffraction.
(2) The thermodynamic stabilities of ferric oxyhydroxides, as described by the activity product in solution pK = -log [Fe(3+)] [OH(-)](3) range from pK = 37.1 for freshly precipitated amorphous oxyhydroxide to pK = 44.2 for well crystallized goethite.
(3) The activity profiles, were also found to vary with ionic strength, the pH at which enzyme adsorbed onto the mineral surface, and in the case of goethite, on the nature of the anions in the buffer.
(4) Opal and goethite mineralize the cusps and bases of the teeth.
(5) Different pH profiles of activity profiles were found when the enzyme was adsorbed onto montmorillonite, kaolinite and goethite.
(6) This could be linked to the presence of ferrous ions in this solid iron oxide, since the ferric oxides haematite and goethite are completely inactive.
(7) Haemosiderin iron cores isolated from patients with secondary haemochromatosis have a goethite-like (alpha-FeOOH) crystal structure whereas those from patients with primary haemochromatosis are amorphous Fe (III) oxide.