Petrology, 2025, V 33, N 3, June.

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  

Jadeitite in Metalherzolite of the El’denyr Massif, 
Chukotka: Mechanism and Setting of Its Formation
B. A. Bazylev, and G. V. Ledneva 
p. 180  

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  

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  

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