 | Thomson, A. R., , , Kohn, S. C., Bulanova, G. P., Smith, C. B., Araujo, D., Walter, M. J. (2014) Origin of sub-lithospheric diamonds from the Juina-5 kimberlite (Brazil): constraints from carbon isotopes and inclusion compositions. Contributions to Mineralogy and Petrology, 168 (6) doi:10.1007/s00410-014-1081-8 | Journal (article/letter/editorial) | | of sub‑lithospheric diamonds from the Juina‑5 kimberlite (Brazil): constraints from carbon isotopes and...Forty-one diamonds sourced from the Juina-5 kimberlite pipe in Southern Brazil, which contain optically identifiable...Universitário Darcy Ribeiro, 90910‑900 Brasilia, Brazil D. Araujo Rio Tinto Exploration Pty. Limited, 1...organics, is equal to the composition of mantle carbon (−5 ‰), and we suggest that recycling/mixing of subducted...of inclusions and isotopic compositions of host Juina-5 diamonds are not correlated. The diamond and inclusion |  | Yang, Jingsui, Meng, Fancong, Xu, Xiangzhen, Robinson, Paul T., Dilek, Yildirim, Makeyev, Alexander B., Wirth, Richard, Wiedenbeck, Michael, Cliff, John (2015) Diamonds, native elements and metal alloys from chromitites of the Ray-Iz ophiolite of the Polar Urals. Gondwana Research, 27 (2) 459-485 doi:10.1016/j.gr.2014.07.004 | Journal (article/letter/editorial) | | temperatures and pressures of formation T N 2000 °C and P N 5 GPa. Importantly, UHP minerals, such as diamond, as...structural units in the region are subdivided into 5 sectors, which consist from west to east of: Lower–middle...The W214 orebody is approximately 100 m long and 5 m wide, and extends to over 100 m depth, indicating...% olivine (Ol), 5–15% orthopyroxene (Opx), 1–2% clinopyroxene (Cpx), and minor spinel or chromite (Cr)...bimodal grain size; coarse olivine grains are mostly 1–5 mm across, whereas fine-grained varieties are b0.2 |
|
