Chemical Bond Effects on Line Intensities in Arsenic X-Ray Emission Spectrum

Kupriyanova, T. A.; Филиппов, М. Н.; Lyamina, O. I.

doi:10.1023/b:jory.0000009668.66258.12

Cited by 4 publications

(2 citation statements)

References 8 publications

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“…Kupriyanova et al (2003) substantiated a similar approach to determine As valence. The X ray emis sion spectra in the region of and were recorded with the same Tescan Vega II XMU SEM, but using an INCA 700 WDS.…”

Section: Chemical Compositionmentioning

confidence: 92%

Schüllerite, Ba2Na(Mn,Ca)(Fe3+,Mg,Fe2+)2Ti2(Si2O7)2(O,F)4, a new mineral species from the Eifel volcanic district, Germany

et al. 2011

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A new heterophyllosilicate mineral schüllerite was found in the Löhley basalt quarry in the Eifel volcanic region, Germany, as a member of the late mineral assemblage comprising nepheline, leucite, augite, phlogopite, magnetite, titanite, fresnoite, barytolamprophyllite, fluorapatite, perovskite, and pyrochlore. Flattened brown crystals of schüllerite up to 0.5 × 1 × 2 mm in size and their aggregates occur in miarolic cav ities of alkali basalt. The mineral is brittle, with a Mohs hardness 3-4 and perfect cleavage parallel to (001).

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Section: Chemical Compositionmentioning

confidence: 92%

Schüllerite, Ba2Na(Mn,Ca)(Fe3+,Mg,Fe2+)2Ti2(Si2O7)2(O,F)4, a new mineral species from the Eifel volcanic district, Germany

et al. 2011

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“…Thus, having normalized the intensity of the to the intensity of , the analytical signal depending only on the iron species in the mineral is obtained. A similar approach was sub stantiated by Kupriyanova et al (2003) for the deter mination of the As valence.…”

Section: Physical Propertiesmentioning

confidence: 99%

Oxyphlogopite K(Mg,Ti,Fe)3[(Si,Al)4O10](O,F)2: A new mineral species of the mica group

Чуканов¹,

Mukhanova²,

Расцветаева³

et al. 2011

Geol. Ore Deposits

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Oxyphlogopite is a new mica group mineral with the idealized formula K(Mg,Ti,Fe) 3 [(Si,Al) 4 O 10 ](O,F) 2 . The holotype material came from a basalt quarry at Mount Rothenberg near Mendig at the Eifel volcanic complex in Rhineland Palatinate, Germany. The mineral occurs as crystals up to 4 × 4 × 0.2 mm in size encrusting cavity walls in alkali basalt. The associated minerals are nepheline, plagioclase, sanidine, augite, diopside, and magnetite. Its color is dark brown, its streak is brown, and its lus ter is vitreous. D meas = 3.06(1) g/cm 3 (flotation in heavy liquids), and D calc = 3.086 g/cm 3 . The IR spectrun does not contain bands of OH groups. Oxyphlogopite is biaxial (negative); α = 1.625(3), β = 1.668(1), and γ = 1.669(1); and 2V meas = 16(2)° and 2V calc = 17°. The dispersion is strong; r < v. The pleochroism is medium; X > Y > Z (brown to dark brown). The chemical composition is as follows (electron microprobe, mean of 5 point analyses, wt %; the ranges are given in parentheses; the H 2 O was determined using the Ali marin method; the Fe 2+ / Fe 3+ was determined with X ray emission spectroscopy): Na 2 O 0.99 (0.(OH) 0.07 . The crystal structure was refined on a single crystal. Oxyphlogopite is monoclinic with space group C2/m; the unit cell parameters are as follows: a = 5.3165(1), b = 9.2000(2), c = 10.0602(2) Å, β = 100.354(2)°. The presence of Ti results in the strong distortion of octahedron M(2). The strongest lines of the X ray powder diffraction pattern [d, Å (I, %) [hkl]] are as follows: 9.91(32) [001], 4.53(11) 110], 3.300(100) [003], 3.090(12) [112], 1.895(21) [005], 1.659(12) [-135], 1.527(16) [-206, 060]. The type spec imens of oxyphlogopite are deposited at the Fersman Mineralogical Museum in Moscow, Russia; the regis tration numbers are 3884/2 (holotype) and 3884/1 (cotype).

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Coupling and decoupling CH stretching vibration of methylene and methine in serine conformers

Wang

Dan

Zhang

et al. 2023

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

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Chemical Bond Effects on Line Intensities in Arsenic X-Ray Emission Spectrum

Cited by 4 publications

References 8 publications

Schüllerite, Ba2Na(Mn,Ca)(Fe3+,Mg,Fe2+)2Ti2(Si2O7)2(O,F)4, a new mineral species from the Eifel volcanic district, Germany

Schüllerite, Ba2Na(Mn,Ca)(Fe3+,Mg,Fe2+)2Ti2(Si2O7)2(O,F)4, a new mineral species from the Eifel volcanic district, Germany

Oxyphlogopite K(Mg,Ti,Fe)3[(Si,Al)4O10](O,F)2: A new mineral species of the mica group

Coupling and decoupling CH stretching vibration of methylene and methine in serine conformers

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