Matt L. Weier
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View article: Raman spectroscopy of the sampleite group of minerals
Raman spectroscopy of the sampleite group of minerals Open
Raman and infrared spectroscopy enabled insights into the molecular structure of the sampleite group of minerals. These minerals are based upon the incorporation of either phosphate or arsenate with chloride anion into the structure, and a…
View article: Raman spectroscopic study of the uranyl oxyhydroxide hydrates: becquerelite, billietite, curite, schoepite and vandendriesscheite
Raman spectroscopic study of the uranyl oxyhydroxide hydrates: becquerelite, billietite, curite, schoepite and vandendriesscheite Open
Raman and infrared spectra of five uranyl oxyhydroxide hydrates, becquerelite, billietite, curite, schoepite and vandendriesscheite, are reported. The observed bands are attributed to the (UO 2 ) 2+ stretching and bending vibrations, UOH …
View article: Raman spectroscopy of uranopilite of different origins—implications for molecular structure
Raman spectroscopy of uranopilite of different origins—implications for molecular structure Open
Uranopilite, [(UO 2 ) 6 (SO 4 )O 2 (OH) 6 (H 2 O) 6 ](H 2 O) 8 , the composition of which may vary, can be understood as a complex hydrated uranyl oxyhydroxy sulfate. The structure of uranopilite from different locations has been studied b…
View article: Raman spectroscopic study of the uranyl phosphate mineral dewindtite
Raman spectroscopic study of the uranyl phosphate mineral dewindtite Open
Raman spectra of two samples of the uranyl mineral dewindtite are presented and interpreted. The observed bands are attributed to the stretching and bending vibrations of the (UO 2 ) 2+ and (PO 4 ) 3− units and water molecules. The hydroge…
View article: A Raman spectroscopic study of the uranyl phosphate mineral parsonsite
A Raman spectroscopic study of the uranyl phosphate mineral parsonsite Open
The mineral parsonsite, with samples from The Ranger Uranium Mine, Australia, and the La Faye Mine, Grury, Saone‐et‐Loire, Burgundy, France, has been characterised by Raman spectroscopy at 298 and 77 K and complemented with infrared spectr…
View article: A Raman spectroscopic study of the uranyl selenite mineral haynesite
A Raman spectroscopic study of the uranyl selenite mineral haynesite Open
The mineral haynesite, a uranyl selenite, has been characterised by Raman spectroscopy at 298 and 77 K. Two bands at 811.5 and 800.2 cm −1 are assigned to the symmetric stretching modes of the (UO 2 ) 2+ and (SeO 3 ) 2− units respectively.…
View article: Raman spectroscopy of three polymorphs of BiVO<sub>4</sub>: clinobisvanite, dreyerite and pucherite, with comparisons to (VO<sub>4</sub>)<sup>3</sup>‐bearing minerals: namibite, pottsite and schumacherite
Raman spectroscopy of three polymorphs of BiVO<sub>4</sub>: clinobisvanite, dreyerite and pucherite, with comparisons to (VO<sub>4</sub>)<sup>3</sup>‐bearing minerals: namibite, pottsite and schumacherite Open
Both Raman and infrared spectroscopy have been used to characterise the three phase‐related minerals—dreyerite (tetragonal BiVO 4 ), pucherite (orthorhombic BiVO 4 ) and clinobisvanite (monoclinic BiVO 4 )—and a comparison of the spectra i…
View article: Raman spectroscopy of walpurgite
Raman spectroscopy of walpurgite Open
Raman spectra of walpurgite, (UO 2 )Bi 4 O 4 (AsO 4 ) 2 ·2H 2 O, recorded at 298 K and 77 K are presented and compared with infrared spectra of walpurgite and phosphowalpurgite. Bands connected with (UO 2 ) 2+ , (AsO 4 ) 3− , and H 2 O str…
View article: Molecular structure of the uranyl silicates—a Raman spectroscopic study
Molecular structure of the uranyl silicates—a Raman spectroscopic study Open
Raman spectroscopy has been used to study the molecular structure of a series of selected uranyl silicate minerals including uranophane, sklodowskite, cuprosklodowskite, boltwoodite and kasolite. Raman spectra clearly show well resolved ba…
View article: Comparison of the Raman spectra of natural and synthetic K‐ and Na‐jarosites at 298 and 77 K
Comparison of the Raman spectra of natural and synthetic K‐ and Na‐jarosites at 298 and 77 K Open
Raman spectroscopy at 298 and 77 K was used to characterize synthetic and natural jarosites of formula M 2 (Fe 3+ ) 6 (SO 4 ) 4 (OH) 12 , where M = K or Na. The natural jarosites are characterized by a well‐defined hydroxyl stretching patt…