Diamond growth during ultrahigh-pressure metamorphism of the Kokchetav Massif, northern Kazakhstan |
| |
| Authors: | K De Corte A Korsakov W R Taylor P Cartigny M Ader and P De Paepe |
| |
| Institution: | Department of Geology and Soil Science, University of Ghent, Belgium (;), Department of Geology and Mineralogy, Royal Museum for Central Africa, Tervuren, Belgium,;Institute of Mineralogy and Petrography, Novosibirsk, Russia,;Research School of Earth Sciences, Australian National University, Canberra, Australia,;Laboratoire de Géochimie des Isotopes Stables, Universitéde Paris 7 et Institut de Physique du Globe, France |
| |
| Abstract: | Abstract Characteristic features of in situ diamonds can be used to retrace diamond formation during ultrahigh pressure (UHP) metamorphism of the Kokchetav Massif, Kazakhstan. These features include the nitrogen aggregation state in diamond, dissolution features observed on diamond surfaces, and the carbon and nitrogen isotopic composition of the diamonds. The minerals in which the diamonds are included provide additional information and support the view that at least some of the Kokchetav microdiamonds are the products of prograde or peak UHP metamorphism. The coexistence of diamond and graphite is evaluated within this framework. |
| |
| Keywords: | diamond graphite ultrahigh-pressure metamorphism |
|
|
