Curious odds and ends

[Lone Hunter]

Some things from Post Oak creek not sure if they're something or not, with exception of #3, pretty sure the one with ridges is echinoid spine and other one is fossil just don't know what.  Really intrigued by whatever the yellow is, don't think it's man-made, it doesn't melt anyway.

[abyssunder]

#5 reminds me of oolitic limestone. If it's that the little tiny balls are ooids.

Edited December 20, 2021 by abyssunder

[Rockwood]

1 - Phosphate (?) Nodule

2 - Cortical bone

4 - Bryozoan

[Lone Hunter]

Why have I never seen yellow Bryzoan or any with color? That's what kept me from assuming it was, and it's #5 btw.  

[Rockwood]

3 hours ago, Lone Hunter said:

and it's #5 btw.  

No. It's #4 that's a bryozoan. The zooids are tiny.

[Lone Hunter]

Dang I got confused!  Might still be. Don't know how y'all see those things and never would thought Bryzoan.  I'll take y'all's word for it.  So what the heck is yellow stuff that looks Bryzoan to me?  Funny, just when I think I've figured something out it's back to class 101.

[Rockwood]

15 minutes ago, Lone Hunter said:

So what the heck is yellow stuff that looks Bryzoan to me?  Funny, just when I think I've figured something out it's back to class 101.

If the environment favored the formation of oolites, it's likely sulfur from decomposing organic matter. There must have been insufficient iron to combine with to form iron minerals.

[JohnJ]

Have you ruled out a small chunk of yellow epoxy traffic paint with reflective beads?

[Rockwood]

12 minutes ago, JohnJ said:

Have you ruled out a small chunk of yellow epoxy traffic paint with reflective beads?

That would explain the angular impression, and black coating. The dumpster under the bridge would indicate that things do get abrasive on the roads at times also.

[DPS Ammonite]

I vaguely remember that someone mentioned that there was/is a plant in Sherman that made glass beads for road marking. Some of them made it into the local creeks. Did they market the paint too? Shine a flashlight at the chunk; is it very reflective?

[Lone Hunter]

I remembered I had a larger yellow stone from from same place I collected a few years ago.  Finally found it, they look the same and maybe will help, I hope, I don't think it's glass bead. 

[Lone Hunter]

Additional view of first one, there isn't a dark area it was just shadow.

Edited December 21, 2021 by Lone Hunter

[Rockwood]

Put it over a flame. I'm afraid this is road paint. The term paint has been stretched a bit these days though. Cement like putty goop might be more descriptive.