The characteristic photoluminescence and EPR features of superdeep diamonds (São-Luis, Brazil)

Yuryeva, O. P.; Рахманова, М. И.; Nadolinny, V. A.; Zedgenizov, D. A.; Shatsky, V. S.; Kagi, Hiroyuki; Komarovskikh, Andrey

doi:10.1007/s00269-015-0756-7

Cited by 15 publications

(13 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…10d, 14a). Additional peaks at 536.8, 537.8, and 505 nm in our samples, as revealed by PL spectroscopy, are absent in lithospheric diamonds globally, but are common in sublithospheric stones (Yuryeva et al, 2015). The defects responsible for these peaks in PL (Collins and Ly, 2002;Tretiakova, 2009) still remain to be resolved.…”

Section: Reasons For the Colors Of Argyle Diamondsmentioning

confidence: 64%

“…Other optical defects: Many of the defects responsible for the color of natural diamonds are identifiable by PL spectroscopy (Iakoubovskii and Adriaenssens, 2002;Titkov et al, 2008Titkov et al, , 2012Gaillou et al, 2010;Yuryeva et al, 2015). Our results from PL study of several yellow and pink diamonds are shown in Figure 14.…”

Section: Impurity Elements and Other Optical Defects (Ftir And Pl Data)mentioning

confidence: 83%

See 1 more Smart Citation

The Unique Nature of Argyle Fancy Diamonds: Internal Structure, Paragenesis, and Reasons for Color

Bulanova¹,

Speich²,

Smith³

et al. 2018

Geoscience and Exploration of the Argyle, Bunder, Diavik, and Murowa Diamond Deposits

View full text Add to dashboard Cite

The Argyle lamproite mine is world famous for fancy colored diamonds, ranging from cognac and champagne shades of brown through Cape yellows to rare pink to intense red and even rarer blue stones. The majority of diamonds are type IaAB, displaying platelet degradation and having plastic and brittle deformation, mainly after diamond formation, indicative of high pressure/temperature conditions. The deformation produced optical defects, causing different Argyle diamond colors.White and brown Argyle diamonds belong to both eclogitic and peridotitic parageneses, but yellow-and pinkcolored ones studied here are eclogitic. Nitrogen contents, N aggregation states, and formation temperatures of yellow diamonds are correlated with their internal structure. The strongly deformed and internally brecciated yellow diamonds have low to moderate contents of highly aggregated N and high temperatures of formation. The undeformed yellow diamonds are richer in moderately aggregated N, and their formation temperatures are lower. The intensity of N3, H3, and H4 bands of the photoluminescence spectra of these diamonds is higher in the more deformed crystals.The pink eclogitic diamonds contain low to moderate N, are highly aggregated, and have high temperatures of formation, but differ from each other in the deformation level recorded by their internal structures. All identified photoluminescence peaks in these pink diamonds are higher in intensity in the strongly deformed crystals.Geothermometry, based on N contents, aggregation state, age, and temperature relationships of the diamonds, shows that most eclogitic diamonds resided at 1,250° to 1,300°C near the base of the lithospheric mantle, slightly deeper than the peridotitic diamonds. One eclogitic pink diamond contains a two-phase garnetomphacite inclusion reequilibrated from precursor majorite with composition indicative of formation pressure of 9.5 to 10 GPa, equivalent to ~300-km depth, the deepest identified for Argyle diamond formation to date. Internal structures of eclogitic diamonds reflect evidence of their formation under stress in a subduction zone setting.

show abstract

Section: Reasons For the Colors Of Argyle Diamondsmentioning

confidence: 64%

Section: Impurity Elements and Other Optical Defects (Ftir And Pl Data)mentioning

confidence: 83%

The Unique Nature of Argyle Fancy Diamonds: Internal Structure, Paragenesis, and Reasons for Color

Bulanova¹,

Speich²,

Smith³

et al. 2018

Geoscience and Exploration of the Argyle, Bunder, Diavik, and Murowa Diamond Deposits

View full text Add to dashboard Cite

show abstract

“…The 613 nm center is observed in diamonds of different types and has been described in many works [6,[34][35][36]. The ZPL at 612.4 nm was accompanied by phonon replicas with phonon energies of 17, 43 (longwave acoustic modes), and 77 meV (acoustic diamond lattice vibration) [6].…”

Section: Photoluminescencementioning

confidence: 83%

“…The ZPL at 612.4 nm was accompanied by phonon replicas with phonon energies of 17, 43 (longwave acoustic modes), and 77 meV (acoustic diamond lattice vibration) [6]. The PL lifetime equal to 10 −8 sec indicated an allowed transition [6]. The 613 nm center was noted to be more intensive in the cubic core than in the cubo-octahedral, peripheral zone of diamond crystals from the Mir deposit [9].…”

Section: Photoluminescencementioning

confidence: 96%

See 1 more Smart Citation

Diamonds from the Mir Pipe (Yakutia): Spectroscopic Features and Annealing Studies

et al. 2021

Self Cite

View full text Add to dashboard Cite

For this study, 21 samples of colorless octahedral diamonds (weighing 5.4–55.0 mg) from the Mir pipe (Yakutia) were investigated with photoluminescence (PL), infrared (IR), and electron paramagnetic resonance (EPR) spectroscopies. Based on the IR data, three groups of diamonds belonging to types IIa, IaAB, and IaB were selected and their spectroscopic features were analyzed in detail. The three categories of stones exhibited different characteristic PL systems. The type IaB diamonds demonstrated dominating nitrogen–nickel complexes S2, S3, and 523 nm, while they were less intensive or even absent in the type IaAB crystals. The type IIa diamonds showed a double peak at 417.4+418.7 nm (the 418 center in this study), which is assumed to be a nickel–boron defect. In the crystals analyzed, no matter which type, 490.7, 563.5, 613, and 676.3 nm systems of various intensity could be detected; moreover, N3, H3, and H4 centers were very common. The step-by-step annealing experiments were performed in the temperature range of 600–1700 °C. The treatment at 600 °C resulted in the 563.5 nm system’s disappearance; the interstitial carbon vacancy annihilation could be considered as a reason. The 676.5 nm and 613 nm defects annealed out at 1500 °C and 1700 °C, respectively. Furthermore, as a result of annealing at 1500 °C, the 558.5 and 576 nm centers characteristic of superdeep diamonds from São Luis (Brazil) appeared. These transformations could be explained by nitrogen diffusion or interaction with the dislocations and/or vacancies produced.

show abstract

Diamond in the Lower Mantle

Kaminsky¹

2017

The Earth's Lower Mantle

View full text Add to dashboard Cite

The characteristic photoluminescence and EPR features of superdeep diamonds (São-Luis, Brazil)

Abstract: accompanied by the EPR center with g-factor of 2.00285. The 536 and 576 nm vibronic systems totally dominated the PL spectra of superdeep diamonds, while none of "normal" diamonds from the Mir pipe (Yakutia) with similar nitrogen characteristics showed the latter three PL centers.

Cited by 15 publications

References 46 publications

The Unique Nature of Argyle Fancy Diamonds: Internal Structure, Paragenesis, and Reasons for Color

The Unique Nature of Argyle Fancy Diamonds: Internal Structure, Paragenesis, and Reasons for Color

Diamonds from the Mir Pipe (Yakutia): Spectroscopic Features and Annealing Studies

Diamond in the Lower Mantle

Contact Info

Product

Resources

About