Naukoveckiy
Full Member
I studied and studied and came to the conclusion that it could be lava-basalt. namely, very similar to Soltan Maidan basaltic rock. In the photo they have a lake of olivine, so to speak, which is replaced by calcite, I know there is a lot of this in the stone, plus the matrix is similar in color, plus it is very slightly magnetic. But if this is lava, then why does the stone have a shape that looks like the regmaglypts of a meteorite, plus the skin is visible as separate thin outer layers. who will say what
https://www.researchgate.net/figure...ic-rocks-under-cross-polarized_fig4_313634114 (Photomicrographs of thin sections of Soltan Maidan basaltic rocks under cross-polarized light. (a) Porphic texture and glomeroporphyritic cluster of clinopyroxene (Cpx) and plagioclase (Plg) crystals in the fine-grained plagioclase and opaque (Opq) groundmass. (b) A large clinopyroxene (augite) phenocryst in a groundmass of plagioclase and clinopyroxene (augite). (c) Subhedral phenocrysts of olivine (Ol) are entirely replaced by calcite (Cc) and opaque minerals. (d) Amygdaloidal texture. Filling minerals are calcite and and chlorite.)
----- DRAWING C
https://www.researchgate.net/figure...ic-rocks-under-cross-polarized_fig4_313634114 (Photomicrographs of thin sections of Soltan Maidan basaltic rocks under cross-polarized light. (a) Porphic texture and glomeroporphyritic cluster of clinopyroxene (Cpx) and plagioclase (Plg) crystals in the fine-grained plagioclase and opaque (Opq) groundmass. (b) A large clinopyroxene (augite) phenocryst in a groundmass of plagioclase and clinopyroxene (augite). (c) Subhedral phenocrysts of olivine (Ol) are entirely replaced by calcite (Cc) and opaque minerals. (d) Amygdaloidal texture. Filling minerals are calcite and and chlorite.)
----- DRAWING C
