A comparative trace element study of diamonds from Premier, Finsch and Jagersfontein mines, South Africa

Fesq, H.W.; Bibby, D.M.; Erasmus, C.S.; Kable, E.J.D.; Sellschop, J.P.F.

doi:10.1016/0079-1946(75)90053-1

Cited by 48 publications

(11 citation statements)

References 28 publications

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“…Identification of small plates of Au and Ag as well as Ir, La, Ce, Th, Nb and Ta in withdrawn concentrate [4] also maybe associated with the nearest kimberlitic rock occurrence [41][42][43][44][45]. Detection of yttrium phosphate, according to [46], is high-significant indicator of kimberlite rock occurrence.…”

Section: A/mmentioning

confidence: 99%

Results of integrated geological-geophysical examination of Makhtesh Ramon area (southern Israel) on diamond-bearing associations

Eppelbaum

Kouznetsov

Vaksman³

et al. 2004

Proceedings of SPIE

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Larson in 1991 [1] put forward a hypothesis on the extremely high development of diamond-bearing kimberlites in the Mid-Cretaceous period. In Israel, the Cretaceous magmatic activity is well known in the central Negev. The first microdiamond in Israel was found in northern Negev [2] and the authors associated its origin with an extraterrestrial event. An integrated analysis of several geological and geophysical factors enables us to select for detailed investigations the area of Makhtesh Ramon canyon situated near the town of Mizpe-Ramon (northern Negev). Data of aero-and land magnetic surveys as well as self-potential method were analyzed using modern interpreting methods. Application of geochemical/geophysical ion-selective analysis testifies to presence of kimberlite-like bodies located at a small depth. Performed mineralogical analyses of subsurface geological associations allowed to identifying a variety of minerals of diamondiferous association: chrome-diopside, orange garnet, bright-crimson pyrope, picroilmenite, black spinel, olivine, anatase, tourmaline, aggregates of perovskite, yttrium phosphate, moissanite and corundum [3][4][5]. The recent geochemical analyses signify to discovering of quasi-kimberlite rock -meimechite, traces of REE and some platinum group elements also testify presence of diamondiferous associations. Finally, five diamonds (with a size exceeding 1 mm) and more than 400 microdiamonds (< 1 mm) have been discovered in this area [6]. Thus, we can unambiguously concluding that the Makhtesh Ramon area contains typical products of kimberlite pipe destruction.

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Section: A/mmentioning

confidence: 99%

Results of integrated geological-geophysical examination of Makhtesh Ramon area (southern Israel) on diamond-bearing associations

Eppelbaum

Kouznetsov

Vaksman³

et al. 2004

Proceedings of SPIE

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“…Possibly indicative of crystallization of diamond from a magma is the trace element evidence [e.g., Fesq et al, 1975] for submicroscopic inclusions of H20-CO2-rich fluids and Fe, Ni, Cu sulfides. Gurney et al [1979] proposed that peridotitic (ultramafic) inclusions and 98% of the diamonds from the Finsch kimberlite pipe crystallized from melt formed by slight partial melting of garnet lherzolite in the presence of water and CO2.…”

Section: Introductionmentioning

confidence: 99%

Diamonds: Minor elements in silicate inclusions: Pressure‐temperature implications

Hervig¹,

Smith²,

Steele³

et al. 1980

J. Geophys. Res.

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New electron and ion microprobe analyses of 36 olivines, 9 pyroxenes, and 10 garnets included in diamond were obtained. Olivine inclusions from kimberlites with Precambrian ages have higher mean Cr2O3 (850 versus 360 ppmw), Al2O3 (200 versus 90 ppmw), CaO (490 versus 210 ppmw), Na2O (110 versus 30 ppmw), and Li (686 versus 466 counts per second) than olivine inclusions found in Mesozoic kimberlites, perhaps indicating a temporal change of either temperature or chemistry or both in the mantle source regions of diamonds. In contrast to lherzolitic olivines, aluminum and sodium in olivines from diamonds are insufficient to couple with trivalent chromium; perhaps divalent chromium is inferred. Some olivines show zoning to Ca‐rich edges. Temperature and pressure estimates for inclusions in four diamonds fall in the combined pressure‐temperature range of coarse and porphyroclastic garnet lherzolites, and temperature estimates for inclusions in seven diamonds lacking a pressure estimate cover most of the temperature range for lherzolites. Taken at face value, the pressure and temperature estimates for inclusions in diamonds indicate that some diamonds might have crystallized in the presence of a liquid containing H2O, CO2, or both. Other estimates fall in the subsolidus field even for H2O‐saturated peridotite. Although the pressure‐temperature estimates overlap for lherzolites and ultramafic‐type inclusions in diamonds, differences in trace element content of olivines require that the crystallization environments were not identical. Perhaps the Cr content of the olivine inclusions indicates that the host diamonds grew in a reducing environment not found in typical lherzolites.

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“…For quantitative analysis, a CRM oil was used as the main external calibration material (CRM-S21; Conostan Ò Oil-Analysis 13 C amu** Selected isotopes for analysis 7 Li, 9 Be, 11 B, 13 C, 23 Na, 27 Al, 29 Si, 31 P, 39 K, 45 Sc, 47 Ti, 51 Table 2). The total carbon concentration was measured by elemental analyzer on two different aliquots in two different laboratories.…”

Section: Samples Standards and Quality Controlmentioning

confidence: 99%

“…Raal (4) used a ''quantitative'' spectroscopic technique to assess trace element impurities in rough diamonds and reported the presence of Si, Mg, Al, Ca, Fe, and Cu with the two last elements being linked to the color of some diamonds. A few decades later, a series of studies investigated trace element impurities in rough diamonds for source discrimination using instrumental neutron activation analysis (INAA; [5][6][7][8][9][10][11]). Sellschop (12, table 4.1) presented a good overall summary of the different trace elements detected in rough diamonds with their range of concentrations mainly defined by those earliest INAA studies noted earlier.…”

mentioning

confidence: 99%

“…The trace element impurities in natural diamond occur as either inclusions (in the form of crystal ⁄ liquid and ⁄ or quenched melt) or as foreign atoms substituted into the crystal lattice (e.g., [9,[20][21][22]). Watling et al (23) were among the first to report the use laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) to discriminate rough diamond sources based on trace element impurities.…”

mentioning

confidence: 99%

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Trace Element Analysis of Rough Diamond by LA‐ICP‐MS: A Case of Source Discrimination?*^,†

Dalpé

Hudon

Ballantyne

et al. 2010

Journal of Forensic Sciences

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Current profiling of rough diamond source is performed using different physical and/or morphological techniques that require strong knowledge and experience in the field. More recently, chemical impurities have been used to discriminate diamond source and with the advance of laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) empirical profiling of rough diamonds is possible to some extent. In this study, we present a LA-ICP-MS methodology that we developed for analyzing ultra-trace element impurities in rough diamond for origin determination ("profiling"). Diamonds from two sources were analyzed by LA-ICP-MS and were statistically classified by accepted methods. For the two diamond populations analyzed in this study, binomial logistic regression produced a better overall correct classification than linear discriminant analysis. The results suggest that an anticipated matrix match reference material would improve the robustness of our methodology for forensic applications.

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A comparative trace element study of diamonds from Premier, Finsch and Jagersfontein mines, South Africa

Cited by 48 publications

References 28 publications

Results of integrated geological-geophysical examination of Makhtesh Ramon area (southern Israel) on diamond-bearing associations

Results of integrated geological-geophysical examination of Makhtesh Ramon area (southern Israel) on diamond-bearing associations

Diamonds: Minor elements in silicate inclusions: Pressure‐temperature implications

Trace Element Analysis of Rough Diamond by LA‐ICP‐MS: A Case of Source Discrimination?*^,†

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A comparative trace element study of diamonds from Premier, Finsch and Jagersfontein mines, South Africa

Cited by 48 publications

References 28 publications

Results of integrated geological-geophysical examination of Makhtesh Ramon area (southern Israel) on diamond-bearing associations

Results of integrated geological-geophysical examination of Makhtesh Ramon area (southern Israel) on diamond-bearing associations

Diamonds: Minor elements in silicate inclusions: Pressure‐temperature implications

Trace Element Analysis of Rough Diamond by LA‐ICP‐MS: A Case of Source Discrimination?*,†

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Product

Resources

About

Trace Element Analysis of Rough Diamond by LA‐ICP‐MS: A Case of Source Discrimination?*^,†