Petrology, 2023, V 31, N 5, October.

Variations in the Composition of MORB Chilled Glasses
from the Mid-Atlantic Ridge, 12°–31° N: Reflection of 
Compositional Evolution of Parental Melts and the 
Influence of a Hydrothermal Component
S. A. Silantyev, A. I. Buikin, A. R. Tshovrebova, 
V. V. Shabykova and V. E. Bel’tenev 
p. 475  

Lower Talnakh Type Intrusions of the Norilsk Ore Region
S. F. Sluzhenikin, K. N. Malitch, M. A. Yudovskaya, 
D. M. Turovtsev, T. N. Antsiferova, S. K. Mikhalev, 
I. Yu. Badanina and N. G. Soloshenko 
p. 492  

Early Paleozoic Tectonothermal Evolution of the 
Khan-Khukhay Metamorphic Complex, Northern Mongolia
O. P. Polyansky, A. Yu. Selyatitskii, 
S. V. Zinoviev and A. V. Babichev 
p. 519  

Formation Stages and Conditions of Carbonate–Silicate 
Veins and Their Wall-Rock Aureoles in the Early 
Proterozoic Complexes of the Belomorian Mobile 
Belt, Northern Karelia
I. S. Volkov and V. M. Kozlovskii 
p. 538  

Updated COMAGMAT-5: Modeling the Effects of Sulfide 
Precipitation in Parallel to the Crystallization 
of Alumino-Chromian Spinel
A. A. Ariskin, K. A. Bychkov, G. S. Nikolaev 
and G. S. Barmina 
p. 558  

Microprobe Analysis of Titanium in Zircon: 
an Estimation of Secondary Fluorescence
A. A. Borisov, S. E. Borisovskiy and 
A. N. Koshlyakova 
p. 576