It can react with hydrochloric acid to form bubbles, probably containing carbonate, which is almost nonexistent in meteorites. Maybe it is an Oolitic Limestone.
There are also two suspicious places: There seems to be olivine crystals in area B (the blue gray part under orthogonally polarized light), and there appears to be a vesicle in area C (seems to be a kind of glass, which is completely black under orthogonal polarization).
Recent news reports suggest that there is carbonate on the Bennu asteroid.
Ask the master's advice. Is it possible that it is a meteorite?
Thin section,Natural light. Areas A, B and C are marked with blue boxes.
Area B is magnified by 100 times,plane-polarized light.
Area B is magnified by 100 times,cross-polarized light. The blue gray part appears to be olivine crystals.
Area C is magnified by 40 times,plane-polarized light.There appears to be a vesicle in area C.
Area C is magnified by 250 times,plane-polarized light.There appears to be a vesicle in area C.
This is a strange stone, obviously not chondrite, It contains a lot of carbonate,but there seems to be evidence of impact. I found two melt pockets in the thin section, which containing flow-cooled glass.
I took dozens of photos and stitched them together into one. Although I'm not sure it's a meteorite, this color composition seems to be common in meteorite thin section. I will continue to explore it. If anyone has any suggestions, I would be grateful.
The photos were taken under cross-polarized light and stitched together.
Thank you,Naukoveckiy. I'm just guessing ,I still need to find the right channel for professional testing to confirm.
In fact, there are hundreds of these stones I picked up in the oval belt about 2km, which is just one of them. The surface of the desert reveals these black stones, completely different from the surrounding gravel.
If they could be meteorites, they might have come from a planet with water, maybe Mars.