Results 111 to 120 of about 39,824 (274)

Estimating the concentration of aluminum-substituted hematite and goethite using diffuse reflectance spectrometry and rock magnetism: Feasibility and limitations

open access: yes, 2016
Hematite and goethite in soils are often aluminum(Al) substituted, which can dramatically change their and magnetic properties and bias abundance estimates using diffuse reflectance spectroscopy (DRS) and magnetic techniques. In this study, synthetic Al-
Barrón, Vidal   +6 more
core   +1 more source

Morphological, chemical and mineralogical characterization of some soils developed on hard carbonate rocks in Sardinia [PDF]

open access: yes, 1992
This preliminary note considers 19 profiles of Sardinian soils developed on hard limestone, dolomitic limestone and dolomite of different age and territorial condition, reporting on the description of the profiles and their physical, chemical and ...
Baldaccini, Paolo   +2 more
core  

Fe-Al Phosphate Microcrystals in Pedogenic Goethite Pisoliths [PDF]

open access: gold, 2020
János Kovács   +3 more
openalex   +1 more source

Infrared dichroism of gold nanorods controlled using a magnetically addressable mesophase

open access: yes, 2014
Gold nanorods have unique optical properties, which make them promising candidates for building nano-structured materials using a "bottom-up" strategy.
Abécassis, Benjamin   +4 more
core   +2 more sources

Rational descriptive classification of duricrusts [PDF]

open access: yes, 1969
The term duricrust appears to be extending itself to include calcareous, gypseous, and saline crusts, in addition to crusts composed dominantly of silica and/or of sesquioxides of iron and aluminium, with or without significant contents of dioxides of ...
Dury, G.H.
core   +1 more source

The Sydney duricrusts: their terminology and nomenclature [PDF]

open access: yes, 1970
Two main duricrust types - laterites and ferricretes - and their underlying materials are mapped and described for the northern parts of the Sydney district, New South Wales.
Faniran, Adetoye
core   +1 more source

Effects of Al substitution on goethite formation [PDF]

open access: yes, 1984
Goethites containing up to 32.7 mole % Al were synthesized and characterized through diffractometry, spectrometry, DSC and chemical techniques. Results indicate that crystal growth was favoured or hindered depending on the percentage of aluminum ...
Deiana, Salvatore Andrea   +3 more
core  

Goethite on Mars - A laboratory study of physically and chemically bound water in ferric oxides [PDF]

open access: yes
Thermogravimetric study of physically and chemically bound water in ferric oxides of limonite with application to goethite on ...
Khare, B. N.   +3 more
core   +1 more source

Templating Iron(III) Oxides on DNA Molecules

open access: yesNanomaterials
Fe(III) oxides were prepared as free nanoparticles and on DNA templates via the precipitation of Fe(III) salts with NaOH in the presence/absence of DNA. Through control of the pH and temperature, FeOOH and Fe2O3 were synthesised.
Siyaka Mj Zubairu   +5 more
doaj   +1 more source

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