The Kokchetav Massif, Kazakhstan:“Type locality” of diamond-bearing UHP metamorphic rocks

HP Schertl, NV Sobolev - Journal of Asian Earth Sciences, 2013 - Elsevier
After the discovery of metamorphic coesite in crustal rocks from the Western Alps (Italy) and
the Western gneiss region (Norway) in the mid 1980s of the last century, metamorphic …

Microdiamonds—frontier of ultrahigh-pressure metamorphism: a review

LF Dobrzhinetskaya - Gondwana Research, 2012 - Elsevier
This is a comprehensive review paper devoted to microdiamonds from ultrahigh-pressure
metamorphic (UHPM) terranes incorporated in orogenic belts formed at convergent plate …

Carbon, carbides, carbonates and carbonatitic melts in the Earth's interior

V Stagno - Journal of the Geological Society, 2019 - lyellcollection.org
Over recent decades, many experimental studies have focused on the effect of CO2 on
phase equilibria and melting behaviour of synthetic eclogites and peridotites as a function of …

Application of Raman spectroscopy to the study of graphitic carbons in the Earth Sciences

O Beyssac, M Lazzeri - 2012 - pubs.geoscienceworld.org
Abstract Graphitic (sp 2-bonded) carbons are widespread on Earth and throughout the
Universe. They have a complex structural organization ranging from amorphous and …

Diamond formation by carbon saturation in C–O–H fluids during cold subduction of oceanic lithosphere

ML Frezzotti, JM Huizenga, R Compagnoni… - … et Cosmochimica Acta, 2014 - Elsevier
Microdiamonds in garnet of graphite-free ultrahigh pressure metamorphic (UHPM) rocks
from Lago di Cignana (western Alps, Italy) represent the first occurrence of diamond in a low …

Graphitization of synthetic diamond crystals: A morphological study

BB Bokhonov, DV Dudina, MR Sharafutdinov - Diamond and Related …, 2021 - Elsevier
In the present work, the morphological and structural evolution occurring upon graphitization
of synthetic diamond microcrystals of cuboctahedral shape at 1600° C during vacuum …

Redox state determination of eclogite xenoliths from Udachnaya kimberlite pipe (Siberian craton), with some implications for the graphite/diamond formation

DS Mikhailenko, V Stagno, AV Korsakov… - … to Mineralogy and …, 2020 - Springer
The formation of diamonds within eclogitic rocks has been widely linked to the fate of carbon
during subduction and, therefore, referred to conditions of pressure, temperature, and …

Origin of graphite–diamond-bearing eclogites from Udachnaya kimberlite pipe

DS Mikhailenko, S Aulbach, AV Korsakov… - Journal of …, 2021 - academic.oup.com
Kimberlite-borne mantle eclogites represent an important diamond source rock. Although
the origin and stability of diamond, as opposed to its low-pressure polymorph graphite, have …

Juxtaposition of diverse, subduction-related tectonic blocks with contrasting metamorphic features and ages in the Paleoproterozoic Aketashitage orogen, NW China …

QWL Zhang, JH Liu, ZMG Li, MY Shi, YC Chen… - …, 2021 - pubs.geoscienceworld.org
The comprehensive investigation of orogenic-related litho-structural assemblages,
metamorphism, and geochronology in early Precambrian orogens can help us better …

Phase relations of arsenian pyrite and arsenopyrite

AS Stepanov, RR Large, ES Kiseeva… - Ore Geology …, 2021 - Elsevier
Arsenian pyrite containing above 1 wt% As plays a crucial role in deposition and deportment
of Au and other chalcophile elements. The importance of arsenian pyrite led to theoretical …