Contents

Petrology

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Vol. 33, No. 3, 2025

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Archean Block in the Core of the Paleoproterozoic Lapland-Kola Orogen: New Data on the Composition and Age of Rocks from the Poriya Guba Islands

A. V. Samsonov, K. G. Erofeeva, O. A. Maksimov, A. V. Stepanova, and Yu. O. Larionova p. 163  abstract

Jadeitite in Metalherzolite of the El’denyr Massif, Chukotka: Mechanism and Setting of Its Formation

B. A. Bazylev, and G. V. Ledneva p. 180  abstract

Archean Pon’goma-Navolok Granulite–Charnockite–Enderbite Complex, Northern Karelia: Geological Structure, Composition, and Parameters of Formation

V. M. Kozlovskii, E. B. Kurdyukov, M. V. Strel’nikov, V. V. Travin, T. F. Zinger, M. A. Golunova, I. S. Volkov, S. A. Ushakova, V. I. Taskaev, and A. I. Yakushev p. 205  abstract

Volatile Contents During the Formation of Olivinite and Olivine-Monticellite Rocks of the Krestovskaya Alkaline–Ultrabasic Carbonatite Intrusion, Polar Siberia: Pyrolysis-Free Gas Chromatography-Mass Spectrometry Data

L. I. Panina, E. Yu. Rokosova, A. T. Isakova, A. A. Tomilenko, and T. A. Bul’bak p. 241  abstract

On the Connection between Sulfide Inclusions in Olivine from Tolbachik Volcano and Fluids from Mafic Cumulates beneath the Klyuchevskoy Group Volcanoes

A. G. Simakin p. 253  abstract

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