2009
DOI: 10.1134/s0016702909050085
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The genesis of low-N diamonds

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Cited by 6 publications
(6 citation statements)
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“…At high P–T Ti binds oxygen and, therefore, restores metallic Fe and Ni from FeO and NiO oxides, as followed from the fugacity values of O 2 in equilibrium buffer reactions (Supplementary Fig. S10 ) 11 , 51 . On the one hand, the reactions increase hydrogen solubility in the melt.…”
Section: Discussionmentioning
confidence: 99%
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“…At high P–T Ti binds oxygen and, therefore, restores metallic Fe and Ni from FeO and NiO oxides, as followed from the fugacity values of O 2 in equilibrium buffer reactions (Supplementary Fig. S10 ) 11 , 51 . On the one hand, the reactions increase hydrogen solubility in the melt.…”
Section: Discussionmentioning
confidence: 99%
“…It is proposed that an extremely high reactivity of metallic Ti is a key factor that leads to crystallization of low-nitrogen diamond. Also, that is the reason why introduction of Ti in the form of oxide with a maximum degree oxidation (TiO 2 ) did not affect the N-state: metallic Ti extracts oxygen from Fe–Ni melt, but TiO 2 does not 11 . Nevertheless, crystallization of low-nitrogen diamond is related rather to the behavior of hydrogen, than oxygen.…”
Section: Discussionmentioning
confidence: 99%
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“…It is indicative that the metallic Ti creates a strongly reducing medium that is corresponding to fugacity , that is 15 orders of mag nitude lower relative to the Fe-FeO buffer equilibrium [12]. The СаСО 3 -Ti interaction is not recorded, probably due to the relatively short duration of the experiment.…”
Section: On the Formation Of Element Carbon During Decomposition Of Cmentioning
confidence: 94%