Contents

Geochemistry International

Vol. 57, No. 9, 2019

Iron and Its Compounds in the Earth’s Core: New Data and Ideas

D. Yu. Pushcharovsky p. 941  abstract

Reaction between Forsterite and Nitrogen Fluid at High Pressure and High Temperature

Hiroyuki Kagi, Toshinori Kubo, Ayako Shinozaki, Taku Okada, Hiroaki Ohfuji and Aiko Nakao p. 956  abstract

SiO2 Inclusions in Sublithospheric Diamonds

D. A. Zedgenizov, A. L. Ragozin, H. Kagi, H. Yurimoto and V. S. Shatsky p. 964  abstract

The Compositional Peculiarities of Microinclusions in Diamonds from the Lomonosov Deposit (Arkhangelsk Province)

G. Yu. Kriulina, A. V. Iskrina, D. A. Zedgenizov, A. V. Bobrov and V. K. Garanin p. 973  abstract

Synthesis and Raman Spectra of K–Ca Double Carbonates: K2Ca(CO3)2 Bütschliite, Fairchildite, and K2Ca2(CO3)3 at 1 Atm

A. V. Arefiev, I. V. Podborodnikov, A. F. Shatskiy and K. D. Litasov p. 981  abstract

Melting Relations in the Model Pyrolite at 2.5, 3.0, 7.0 GPa and 1400–1800°C: Application to the Problem of the Formation of High-Chromium Garnets

E. A. Matrosova, A. A. Bendeliani, A. V. Bobrov, A. A. Kargal’tsev and Yu. A. Ignat’ev p. 988  abstract

Evolution of Diamond-Forming Systems of the Mantle Transition Zone: Ringwoodite Peritectic Reaction (Mg,Fe)2SiO4 (Experiment at 20 GPa)

A. V. Spivak, Yu. A. Litvin, E. S. Zakharchenko, D. A. Simonova and L. S. Dubrovinsky p. 1000  abstract

Formation of Iron Hydride and Iron Carbide from Hydrocarbon Systems at Ultra-High Thermobaric Conditions

A. Yu. Serovaiskii, A. Yu. Kolesnikov and V. G. Kutcherov p. 1008  abstract

Texture and Genesis of Polycrystalline Varieties of Diamond Based on Phase-Contrast and Diffraction Contrast Tomography

A. A. Shiryaev, F. V. Kaminsky, W. Ludwig, D. A. Zolotov, A. V. Buzmakov and S. V. Titkov p. 1015  abstract

MgCO3 + SiO2 Reaction at Pressures up to 32 GPa Studied Using in-Situ X-Ray Diffraction and Synchrotron Radiation

K. D. Litasov and A. F. Shatskiy p. 1024  abstract