Evolution of Mineral Composition during Eclogite Metamorphism in the Belomorian Mobile Belt: Data from Vichennaya Luda Island

Features of olivine crystallization in ordinary chondrites (Saratov meteorite): geochemistry of trace and rare earth elements

“…To date, studies of EOC silicate minerals have been limited to the composition of major or minor elements, which has led to difficulties in assessing the petrological type of grains delivered from the Itokawa asteroid [9]. Trace and rare earth elements are widely used in assessing geochemical conditions, which makes it possible to use them to study the conditions for the formation of minerals of various genesis, such as zircon [10], tourmaline [11], beryl [12], pyroxene [13], and also glasses [14]. Trace elements in olivine and pyroxene are slightly affected by diffusion under the conditions of thermal metamorphism [15,16] observed in the parent bodies of chondrites, which allows them to be used in the study of EOC minerals.…”