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Bederite, a new pegmatite phosphate mineral from Nevados de Palermo, Argentina: Description and crystal structure
Bederite new pegmatite phosphate mineral Nevados de Palermo Argentina Description crystal structure
2012/4/1
Bederite, ideally Ca Mn Fe Mn (PO ) (H O) , orthorhombic, a = 12.559(2), b = 12.834(1), c= 11.714(2) ?, V = 1887.8(4) ?
, Z = 4, space group Pcab, is a new mineral from the El Pe?(R)AE
pegmatite, Ne...
Interaction of Synthetic Sulphate “Green Rust” with Phosphate and the Crystallization of Vivianite
Anion Exchange Fe(II)FeIII-hydroxides Green Rust Layered Hydroxides Phosphate Vivianite
2011/12/7
Abstract: Because layered Fe(II)Fe(III)-hydroxides (Green rusts, GRs) are anion exchangers, they represent potential orthophosphate sorbents in anoxic soils and sediments. To evaluate this possibility...
Effect of Phosphate on the Crystallization of Hematite, Goethite, and Lepidocrocite from Ferrihydrite
Crystallization Ferrihydrite Goethite Hematite Lepidocrocite Phosphate
2011/12/7
Abstract: We investigated the crystallization of ferrihydrite prepared by hydrolysis of Fe(NO3)3 solutions containing phosphate. Crystallization was studied at different pH (3–9), temperatures (298, 3...
A Study on The Activities of Glucose-6-Phosphate Dehydrogenase and 6-Phosphogluconate Dehydrogenase Enzymes in Some Spalax Populations
Spalax Glucose-6-Phosphate and 6-Phosphogluconate Dehydrogenase activity Speciation
2010/3/31
The purpose in planing this investigation was to contribute to the speciation problems in genus Spalax. For this, we examined the activities of Glucose-6-Phosphate Dehydrogenase (G-6-PD) and 6-Phospho...
The Effect of phosphate Ions (PO3-4) on the Corrosion of Iron in Sulphat Solutions
phosphate Ions (PO3-4) Corrosion Iron Sulphat Solutions
2010/6/29
The effect of phosphate ions on the corrosion of iron in sulphate solutions at different temperatures (293 K, 313 K, 333 K and 353 K) and at different pH (pH=2.1, 7.2 and 12.3) values was investigated...
Effects of microbial activity on the 18O of dissolved inorganic phosphate and textural features of synthetic apatites
microbial activity inorganic phosphate textural features synthetic apatites
2012/4/1
Laboratory growth experiments were conducted to investigate the oxygen isotope effects associated with bacterial metabolism of phosphatic compounds commonly available in nature. The observed oxygen is...
Phosphovanadylite: A new vanadium phosphate mineral with a zeolite-type structure
Phosphovanadylite vanadium phosphate mineral zeolite-type structure
2012/4/1
Phosphovanadylite, whose simplified formula is (Ba,Ca,K,Na)x[(V,Al)4P2(O,OH)16]·12H2O, is a new vanadium phosphate zeolite mineral found in the Phosphoria Formation at Monsanto’s Enoch Valley Mine, So...
Synthesis and Characterisation of Anhydrous Magnesium Phosphate Mg3(PO4)2
Synthesis Characterisation Anhydrous Magnesium Phosphate Mg3(PO4)2
2010/8/19
The synthesis and characterization of anhydorus Mg3(PO4)2 was investigated. Mg3(PO4)2 is reported to have similar structural arrangements with Co3(PO4)2 and g-Zn3(PO4)2 compounds. The sample was prepa...
Epitaxial overgrowth of goethite on hematite synthesized in phosphate media: A scanning force and transmission electron microscopy study
Epitaxial goethite hematite synthesized phosphate media scanning force transmission electron microscopy study
2012/4/6
WeusedX-raydiffraction(XRD),scanningforcemicroscopy(SFM),transmissionelec-
tronmicroscopy(TEM),andcolortoinvestigatetheeffectofphosphateonthecrystalli-
zationrate,nature,andmorphologyofironoxidespre...
Comparison of Hematite Coagulation by Charge Screening and Phosphate Adsorption: Differences in Aggregate Structure
Coagulation Kinetics Fractal Aggregate Hematite Light Scattering Phosphate Adsorption
2011/12/22
Abstract: The formation and structure of hematite aggregates were examined by dynamic and static light scattering techniques. A large range in coagulation kinetics was studied by varying either indiff...
Acidity of Montmorillonite-(Ce or Zr) Phosphate Cross-linked Compounds
Layered phosphates Montmorillonite Surface acidity
2011/12/28
The nature and number of acid sites per unit weight on a series of materials obtained by interaction of a montmorillonite with zirconium or cerium hydrogenphosphates precipitated in situ by reaction b...
Trimethyl Phosphate Induced Decomposition of Kaolinite
Aluminium alkyl phosphate Hydrolysis Kaolinite Kaolinite decomposition Trimethyl phosphate
2011/12/28
The decomposition of kaolinite by treatment with trimethyl phosphate (TMP) and the composition of the new crystalline phase formed were studied. On hot treatment with TMP, kaolinite forms a crystallin...
Fast and Slow Phosphate Sorption by Goethite-Rich Natural Materials
Adsorption Ferrihydrite Goethite Iron oxides Phosphate Porosity Silicate Sorption
2011/11/30
Abstract: Although phosphate sorption by goethite and other less-abundant Fe oxides strongly influences the concentration of this anion in the soil solution and aquatic environments, relatively little...
Phosphate Transport in Illite Due to Consolidation
Phosphate Transport Illite Consolidation
2012/2/15
The conditions were studied under which consolidation loading caused the release of phosphate from a saturated illite clay. P32 tracer techniques were employed to follow the movement of phosphate in c...
