Essilfie-Dughan, "Transformation of two-line ferrihydrite to goethite
and hematite as a function of pH and temperature," Environmental Science and Technology, vol.
These subfacies are extremely fine-grained to fine-grained groundmass of ferruginous kaolinite and goethite
Because crystalline hematite has a weak ferromagnetic resonance caused by canting of its anti-ferromagnetically-paired iron spins at 48 GHz and 290 K (8), we anticipate that such resonances may be observable in the polycrystalline iron oxides of corrosion in the range of 30 GHz to 50 GHz and particularly in our antiferromagnetic powders of hematite and goethite
. As a first attempt to observe these, we measured the magnitude of reflected wave from the tip of an open coaxial probe known as the Agilent[dagger] slim probe.
Alter the oxidised TAPM samples were extracted for 160 h, the remaining suspended solids were removed by filtration, and enough solid goethite
or kaolinite added to the supernatant to provide a mineral surface area of 100 [m.sup.2].
The matrix is pigmented with indistinct patches of hematite or goethite
, containing also fine and varied detrital grains.
Specific topics of the 20 papers include the significance of nuclear fuel in this century, advanced separation processing of spent nuclear fuel using geologic repositories, dissolution of irradiated nuclear fuel from the Big Rock Point reactor, haze formation and behavior in liquid-to-liquid extraction processes, plutonium peroxide in process chemistry, potential applications of Klaui ligands in actinide separations, applications of ionic liquids in actinide and fission product separations, and the influence of simple organic ligands on the partitioning mechanism of trivalent lanthanum to Goethite
. The authors have included a subject index.
The concentration of goethite
, the mineral responsible for the yellowish-brown color, decreases exponentially with respect to distance from the fracture.
, the water-bearing iron mineral named for the German poet Johann Wolfgang yon Goethe, who dabbled in mineralogy.
In addition, the XRD results show several minor phases, such as hematite and goethite
, which likely occur as inclusions within the heavy mineral grains or as weathering products.
Chromate adsorption on goethite
: Effects of aluminum substitution.