  The paper presents the summary data of the authors' research within the
framework of the OLIMPIYA project (the Russian acronym of {\bf OLI}viny iz {\bf
M}eteoritov --- {\bf P}oisk tyazholykh {\bf I} sverkhtyazholykh {\bf YA}der /
Olivines from meteorites: Search for heavy and superheavy nuclei) and results
of track analysis for heavy cosmic ray nuclei (\emph{Z} = 26--129) in olivine
crystals from meteorites using an original processing technique. A total of
21,743 tracks of nuclei heavier than iron have been identified in meteoritic
matter to date to form the largest database within this charge range. The
database includes three tracks of superheavy nuclei with the lifetimes of about
a few decades, which can be considered as direct experimental evidence for the
existence of natural superheavy nuclei from the "island of stability".
Comprehensive comparative analysis of data from two meteorites with different
cosmic ray exposure ages, Marjalahti (from 178 to 205 Myr) and Eagle Station
(from 35 to 71 Myr), is presented for the first time. The results are discussed
within the existing concepts of nuclei formation in astrophysical processes.
