搜索结果: 1-14 共查到“地质学 boron”相关记录14条 . 查询时间(0.031 秒)
Origin of boron in the Damxung Co Salt Lake (central Tibet): Evidence from boron geochemistry and isotopes
boron geochemistry origin quaternary deposits Damxung Co Salt Lake Tibet
2017/4/11
The origin of boron in boron-rich salt lakes in the Tibetan Plateau has long been the subject of debate. The Damzung
Co Salt Lake in central Tibet has high boron concentrations (B = 276–313 mg/L) and...
Boron and other trace element constraints on the slab-derived component in Quaternary volcanic rocks from the Southern Volcanic Zone of the Andes
Andean Arc arc lava boron prompt γ-ray analysis mantle source
2017/4/11
We present a dataset for boron and other trace element contents obtained from samples from 13 volcanoes distributed
along the Quaternary volcanic front of the Southern Volcanic Zone (SVZ) of the Chil...
Boron Release from Weathering of Illites, Serpentine, Shales,and Illitic/Palygorskitic Soils
Illitic/Palygorskitic Soils Boron Release
2011/11/11
Boron Release from Weathering of Illites, Serpentine, Shales,and Illitic/Palygorskitic Soils.
A simple method for the precise determination of boron, zirconium, niobium, hafnium and tantalum using ICP-MS and new results for rock reference samples
ICP-MS analytical method rock reference samples boron high field strength elements
2017/8/9
An analytical technique for determining boron, zirconium, niobium, hafnium and tantalum contents in rock samples by inductively coupled plasma mass spectrometry (ICP-MS) is described. The rock samples...
Tetrahedral boron in naturally occurring tourmaline
Tetrahedral boron naturally occurring tourmaline
2012/4/1
Evidence for boron in both trigonal and tetrahedral coordination has been found in B magic-angle-spinning (MAS) nuclear magnetic resonance (NMR) spectra ofnatural, inclusion-free speci-mens of alumin...
Boron: Mineralogy, Petrology and Geochemistry. edited by E.S. Grew and L.M. Anovitz. Minerlaogical Society of America Reviews in Mineralogy, Vol. 33, 1996
Minerlaogical Society America Reviews Mineralogy
2012/3/31
This very large overview of the role of boron in mineralogy,
petrology and geochemistry divides itself with minimal over-
lap and clutter into three parts: crystal chemistry°(TM)includin
thermochem...
Redox conditions in piston-cylinder apparatus: The different behavior of boron nitride and unfired pyrophyllite assemblies
Redox conditions piston-cylinder apparatus different behavior boron nitride unfired pyrophyllite assemblies
2012/4/5
Piston-cylinder experiments with C-H-O fluids in equilibrium with graphite as redox
sensor were performed at 900!a and 10 kbar. With this technique, it is possible to inves-
tigate the hydrogen perm...
Abstract: Boron sorption by hydrous Al-oxide was studied as a function of concentration, pH, temperature and in the presence of oxalate and phosphate. For comparison sorption of B was also measured wi...
Modeling Boron Adsorption on Kaolinite
Adsorption Boron Ion-pair Ion-speciation Kaolinite Surface complexation Triple-layer model
2011/12/30
Boron adsorption at constant ionic strength [0.09 ?0.01 moles/liter of KClO4 or Ca(ClO4)2] on 0.2? 祄 clay fraction of pretreated kaolinite was modeled using both phenomenological equations and surface...
Sodic Clay-Zeolite Assemblage in Basalt at Boron, California
Analcime Boron Cation exchange Clinoptilolite Gmelinite Heulandite Phillipsite Saponite Sodium Zeolite
2012/1/9
An assemblage of clay minerals, Na-zeolites, Fe- and Sb-sulfides, and borates occurs in cavities in the basalt flow that underlies the main borax ore body exposed by the U.S. Borax open pit at Boron, ...
Effect of Ion-Pair Formation on Boron Adsorption by Kaolinite
Adsorption Boron Ion pair Ion speciation Kaolinite
2012/2/2
Boron adsorption on 2-0.2-祄 size fractions of kaolinite at 25??2癈 at pH values between 6.0 and 10.5 was studied. The kaolinite sample was pretreated to remove any surface oxide and hydroxide coatings....
Effect of Exchangeable Ions and Ionic Strength on Boron Adsorption by Montmorillonite and Illite
Adsorption Boron Cation exchange Illite Ionic strength Montmorillonite
2012/2/7
The effects of exchangeable Na and Ca and the ionic strength of NaCl and CaCl2 solutions on the boron adsorption by the Na and Ca forms of montmorillonite and illite at pH 9 were studied. The boron ad...
Boron Adsorption by Clay Minerals Using a Phenomenological Equation
Adsorption Boron Illite Kaolinite Montmorillonite
2012/2/8
Boron adsorption by Ca forms of montmorillonite, illite, and kaolinite was determined as a function of pH and boron concentration in solution. Data from batch experiments were compared with results co...
Boron Fixation by Illites
Boron Fixation Illites
2012/2/21
The mechanism of boron uptake by clays, especially illitic clays, and the factors which control such uptake have long been debated issues. In an attempt to answer some of the questions of the controve...
