Application of nuclear quadrupole resonance in study of minerals

Pen’kov, I. N.; Sofin, I.A.

doi:10.1080/00206816709474515

Cited by 7 publications

(7 citation statements)

References 2 publications

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“…11 Several comprehensive summaries can be found listed at the end of this chapter. 23 One year later the English translation of this paper with small modifications appeared. 23 One year later the English translation of this paper with small modifications appeared.…”

Section: Nqr In Mineralogy and Geologymentioning

confidence: 99%

“…[12][13][14][15][16][17][18][19][20][21][22] The pioneering review devoted to NQR in minerals (on the base of own earlier studies) was published by Pen'kov and Safin in 1966 in Russian. 24 For the first time these articles show the feasibility of using the NQR method, in some instances, in the study of those features of mineral structure and chemistry which are difficult or impossible to attack by conventional methods, such as x-ray or Mössbauer spectroscopy. 24 For the first time these articles show the feasibility of using the NQR method, in some instances, in the study of those features of mineral structure and chemistry which are difficult or impossible to attack by conventional methods, such as x-ray or Mössbauer spectroscopy.…”

Section: Nqr In Mineralogy and Geologymentioning

confidence: 99%

“…These sulfides attract a great interest due to their possible application in different areas of electronic equipment, 5 wide distribution in industrial copper-ore deposits 4 and possession of indicative properties of ore-formation. 33,34 In particular, the low-temperature chalcocite Cu 2 S NQR signals were observed at temperatures lower than 290 K. 33 The spectrum consists of 48 lines (24 lines for each copper isotope) in a narrow frequency range (16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27)(28)(29). Such problem is defined by the fact that the binary sulfides create the accretions in copper deposits.…”

Section: Nqr Frequenciesmentioning

confidence: 99%

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Contribution of Copper Nqr Spectroscopy to the Geological Studies of Complex Sulfides and Oxides

Gainov

Dooglav

Mukhamedshin

et al. 2009

NATO Science for Peace and Security Series B: Physics and Biophysics

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Many energy-related areas such as nuclear waste isolation, continental drilling, fossil fuel recovery, and geothermal energy are directly associated with an in-depth understanding of the earth sciences. Of particular interest is the development of analytical techniques which can augment existing ones in developing a better understanding of mineralogy.Presently, available instrumental techniques for studying mineralogical problems such as x-ray, electron and neutron diffraction, nuclear gamma resonance (NGR or Mössbauer spectroscopy), electron microscopy and transmission electron microscopy have inherent limitations. These manifest themselves in being unable to characterize mineral samples fully, especially if they are polycrystalline.Nuclear Quadrupole Resonance (NQR) spectroscopy offers the potential for being able to obtain accurate high resolution spectra. These can then be interpreted to give structural information which can be related to local electronic structure, atomic arrangement, order/disorder phenomena, and crystal phase transformation. In addition, internal dynamics (ionic diffusion, ______ *

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Section: Nqr In Mineralogy and Geologymentioning

confidence: 99%

Section: Nqr In Mineralogy and Geologymentioning

confidence: 99%

Section: Nqr Frequenciesmentioning

confidence: 99%

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Contribution of Copper Nqr Spectroscopy to the Geological Studies of Complex Sulfides and Oxides

Gainov

Dooglav

Mukhamedshin

et al. 2009

NATO Science for Peace and Security Series B: Physics and Biophysics

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“…On the one hand, a more efficient exploration of this ore, which necessitates the implementation of remote and real-time bulk mineralogical analysis, is very important for mining industry worldwide at the present time. Two spectroscopy methods are considered as perspective tools for copper mining industry: Mössbauer (sometimes referred to as nuclear gamma resonance) [3] and nuclear quadrupole resonance (NQR) techniques [4][5][6]. Both Mössbauer and NQR instrumentations are microscopic methods, however the corresponding effects are observed primarily for different nuclei-probes.…”

Section: Introductionmentioning

confidence: 99%

Application of 57Fe Mössbauer spectroscopy as a tool for mining exploration of bornite (Cu5FeS4) copper ore

et al. 2013

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Nuclear resonance methods, including Mössbauer spectroscopy, are considered as unique techniques suitable for remote on-line mineralogical analysis. The employment of these methods provides potentially significant commercial benefits for mining industry. As applied to copper sulfide ores, Mössbauer spectroscopy method is suitable for the analysis noted. Bornite (formally Cu 5 FeS 4) is a significant part of copper ore and identification of its properties is important for economic exploitation of commercial copper ore deposits. A series of natural bornite samples was studied by 57 Fe Mössbauer spectroscopy. Two aspects were considered: reexamination of 57 Fe Mössbauer properties of natural bornite samples and their stability irrespective of origin and potential use of miniaturized Mössbauer spectrometers MIMOS II for in-situ bornite identification. The results obtained show a number of potential benefits of introducing the available portative Mössbauer equipment into the mining industry for express mineralogical analysis. In addition, results of some preliminary 63,65 Cu nuclear quadrupole resonance (NQR) studies of bornite are reported and their merits with Mössbauer techniques for bornite detection discussed.

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“…In this case the EFG is formed primarily due to redistribution of electronic density. It was demonstrated specially that the main factor influenced on the EFG value in NQR spectra of Sb(As)-bearing chalcogenides is a change of Sb(As)-S bond polarity (Pen'kov & Safin, 1966b), i.e. the extent of bond ionicity.…”

Section: Nqr Spectra Of Sb 2 S 3 As 5 Sbs 4 Ag 3 Sbsmentioning

confidence: 99%

Determination of the Local Crystal-Chemical Features of Complex Chalcogenides by Copper, Antimony, and Arsenic NQR

Gainov¹,

Dooglav²,

Penkov³

et al. 2010

Superconductor

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Application of nuclear quadrupole resonance in study of minerals

Cited by 7 publications

References 2 publications

Contribution of Copper Nqr Spectroscopy to the Geological Studies of Complex Sulfides and Oxides

Contribution of Copper Nqr Spectroscopy to the Geological Studies of Complex Sulfides and Oxides

Application of 57Fe Mössbauer spectroscopy as a tool for mining exploration of bornite (Cu5FeS4) copper ore

Determination of the Local Crystal-Chemical Features of Complex Chalcogenides by Copper, Antimony, and Arsenic NQR

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