Diamond potential estimation based on kimberlite major element chemistry

Vasilenko, V. B.; Зинчук, Н. Н.; Красавчиков, В О; Kuznetsova, L. K.; Хлестов, В. В.; Волкова, Н. И.

doi:10.1016/s0375-6742(02)00219-4

Cited by 38 publications

(25 citation statements)

References 28 publications

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“…The concentrations of most major elements in the studied kimberlites (Table 1; see Supplementary Table for a complete data set) are in a good agreement with previously published analyses from Udachnaya (e.g., Ilupin et al, 1974;Vasilenko et al, 2002) and typical group-I kimberlites (e.g., Kjarsgaard et al, 2009;Price et al, 2000). All samples are highly magnesian (27.8-35.9 wt.% MgO) and lie along the olivinecontrol line (Fig.…”

Section: Major Elementssupporting

confidence: 88%

Ultrafresh salty kimberlite of the Udachnaya–East pipe (Yakutia, Russia): A petrological oddity or fortuitous discovery?

Kamenetsky

Golovin

et al. 2012

Lithos

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Section: Major Elementssupporting

confidence: 88%

Ultrafresh salty kimberlite of the Udachnaya–East pipe (Yakutia, Russia): A petrological oddity or fortuitous discovery?

Kamenetsky

Golovin

et al. 2012

Lithos

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“…Sablukov (1995) distinguished two chemical groups of Arkhangelsk kimberlites of differing diamond prospectivity. Kimberlite composition has been used to predict diamond grade by Vasilenko et al (2002) using major-element data. A statistically significant relationship between rock composition and diamond grade was claimed, but diamond grades were determined on small samples of only 300 kg.…”

Section: Previous Studiesmentioning

confidence: 99%

“…A statistically significant relationship between rock composition and diamond grade was claimed, but diamond grades were determined on small samples of only 300 kg. Vasilenko et al (2002) combined two equations in an effort to predict diamond grade, one for a low-grade population and a second for a high-grade population. Aside from substantial uncertainty resulting from small samples, and difficulties associating a diamond grade with a specific lithology in practical sampling, their results suggest that two different populations were being analyzed and assembled in their final equations.…”

Section: Previous Studiesmentioning

confidence: 99%

FIRST-ROW TRANSITION ELEMENTS, Y AND Ga IN KIMBERLITE AND LAMPROITE: APPLICATIONS TO DIAMOND PROSPECTIVITY AND PETROGENESIS

Birkett¹

2008

The Canadian Mineralogist

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Whole-rock magmatic compositions of hypabyssal-facies samples from on-craton kimberlites predict diamond prospectivity. Within a database of some 100 kimberlites worldwide, 88% of occurrences are correctly assigned using Ti, Cr, Ni and Y whole-rock concentrations. Prospective occurrences show lower Ti, Y, Ga, Mn, Fe, Sc, Zn, V and Cu, and higher Ni and Cr than non-prospective, otherwise similar rocks. Magnesium, more abundant in prospective occurrences, can also be used to distinguish these two groups, although to a lesser extent. Similar differences, excepting Ti, are observed between diamondiferous (prospective) and non-diamondiferous (non-prospective) lamproites. These distinctions result from differences in both groundmass and suspended-load compositions of these rocks. Differences in oxygen fugacity attending the genesis and evolution of kimberlitic magma most likely contribute to these distinct compositions, although other factors such as diamond presence in source regions and pressure and temperature conditions probably contribute as well.Le potentiel diamantifère des kimberlites cratoniques se prédit par la composition magmatique des échantillons provenant du faciès hypabyssal. Avec une base de données de quelques 100 kimberlites, 88% des indices se catégorisent correctement avec les concentrations de Ti, Cr, Ni et Y de la roche totale. Les indices à potentiel élevé se distinguent par de teneurs faibles en Ti, Y, Ga, Mn, Fe, Sc, Zn, V et Cu, et de teneurs élevées en Ni et Cr, en comparaison avec les indices d'intérêt moindre. La teneur en MgO, plus élevée dans les indices à potentiel élevé, peut servir aussi à séparer ces deux groupes, bien qu'avec un degré de confiance moindre. Des différences similaires, sauf pour le Ti, sont observées avec les lamproïtes en corrélation avec leur potentiel diamantifère. Ces différences en composition résultent à la fois des compositions de la pâte et de la nature des macrocristaux et des nodules des magmas. Des variations de la fugacité d'oxygène dans les régions-sources des magmas contribuent probablement aux différences compositionnelles entre ces groupes de roches, bien que d'autres causes, telles la présence du diamant à la source, la pression et la température, jouent aussi un rôle.

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“…Колебания составов кимберлитов удобно описывать на основе петрохимической популяционной модели (Василенко и др., 1997, 2012Vasilenko et al, 2002). Согласно этой модели, химические составы кимберлитов делятся на 7 дискретных групп или популяций (кимберлитов, возникших в сходных условиях), которые выделяются по содержанию TiO 2 (табл.…”

Section: типохимические признаки кимберлитовunclassified

Conjugation of chemical compositions of rocks and accessory minerals in kimberlites

et al. 2019

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Сделан вывод о комагматичности пироповых гранатов, алмазов и породообразующих минералов кимберлитов. Для исследования использованы данные по алмазным месторождениям Якутии, в том числе по кимберлитовым трубкам Ботуобинская, Нюрбинская, Интернациональная, Мир, Айхал, Юбилейная, Сытыканская, Удачная-западная, Удачная-восточная и Заполярная. База данных химических составов пород содержит более 7000 анализов, из которых 1976 сопровождаются данными об алмазоносности пород и 1529-нейтронно-активационными определениями хрома. База данных составов пиропового граната включает 1491 микрозондовый анализ, составы пикроильменита охарактеризованы 986 микрозондовыми анализами. Для обоснования достоверности сделанных заключений сопоставлены коэффициенты вариации содержаний породообразующих оксидов в породах кимберлитовой и других магматических формаций.

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Diamond potential estimation based on kimberlite major element chemistry

Cited by 38 publications

References 28 publications

Ultrafresh salty kimberlite of the Udachnaya–East pipe (Yakutia, Russia): A petrological oddity or fortuitous discovery?

Ultrafresh salty kimberlite of the Udachnaya–East pipe (Yakutia, Russia): A petrological oddity or fortuitous discovery?

FIRST-ROW TRANSITION ELEMENTS, Y AND Ga IN KIMBERLITE AND LAMPROITE: APPLICATIONS TO DIAMOND PROSPECTIVITY AND PETROGENESIS

Conjugation of chemical compositions of rocks and accessory minerals in kimberlites

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