Strange “Rocks”

[TexAg]

Okay, I’ve asked several artifact hunters what these are, nobody knows for sure. Just a few of the many that are on the surface on my permission ranch in Loving Co, TX. I find them in the tiny dry sandy washes in the portion of the ranch where there are some ridges that are 10-20’ higher than the low lying areas. They are typically small and round, marble to golf ball size. They are not metallic or magnetic (checked with my metal detector and a strong magnet). They are dense and feel heavier than a normal rock of its size. Some have smaller round nodules on them. A possibility is non metallic meteorites, but they don’t seem to match photos of meteorites on the internet. Any ideas? Note: lower right hand corner is flint and not part of my question.

[SurfaceHunter]

Hit one with a hammer let’s see what is inside

[TexAg]

Good idea SH. Here are before and after hitting it with a hammer. Looks the same inside and outside.

[Artifascination]

Looks like asphaltum rocks to me.

[TexAg]

It doesn’t have any odor, hydrocarbons or anything else.

[SurfaceHunter]

Almost looks like pottery balls for cooking but I can’t tell

[Uncle Trav]

Some type of volcanic cinder?

[Glacial Pebble]

Maybe fulgurites??

[LongStride]

they look burned , if not natural cooking stones was my guess also

[tomclark]

sandstone concretions of some sort. individual grains of sand/minerals.... we call 'em crunchberries.

[Lindenmeier-Man]

Seen em off & on for near 50 years Mike.