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dillonf Cave Dweller Member since February 2022 Posts: 91	What am I Mar 13, 2022 19:13:06 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by dillonf on Mar 13, 2022 19:13:06 GMT -5 Creek Rock Found in a creek in Central Texas. Has vertical striations. Softer than pocket knife steel. Most other examples are thinner, but have similar color bands. Any ideas are appreciated!! Cheers,Dillon

Pat Cave Dweller Member since February 2012 Posts: 10,233	What am I Mar 13, 2022 19:21:46 GMT -5 via mobile Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by Pat on Mar 13, 2022 19:21:46 GMT -5 Pictures, please!!
	Pat

hummingbirdstones
misunderstood rock expert

Member since October 2017
Posts: 10,882

What am I Mar 13, 2022 19:52:20 GMT -5 Pat, LazerFlash, and 1 more like this

Quote

Post by hummingbirdstones on Mar 13, 2022 19:52:20 GMT -5

Here you go, Pat!

Robin
www.hummingbirdstones.com

"Of all tyrannies, a tyranny sincerely exercised for the good of its victims may be the most oppressive. It would be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated; but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience."

-- C.S. Lewis

Pat Cave Dweller Member since February 2012 Posts: 10,233	What am I Mar 13, 2022 20:28:57 GMT -5 via mobile hummingbirdstones and LazerFlash like this Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by Pat on Mar 13, 2022 20:28:57 GMT -5 Can you show the back? Looks manmade so far. Thanks, hummingbirdstones Robin
	Last Edit: Mar 13, 2022 20:29:34 GMT -5 by Pat Pat

Tommy Administrator Member since January 2013 Posts: 11,234	What am I Mar 13, 2022 23:46:58 GMT -5 via mobile Pat likes this Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by Tommy on Mar 13, 2022 23:46:58 GMT -5 Just for clarification dillonf did you shape it or is it as found?

amygdule gets rocks for Christmas Watch out for Sneaker Waves Member since April 2012 Posts: 5,801	What am I Mar 14, 2022 0:30:18 GMT -5 hummingbirdstones and dillonf like this Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by amygdule on Mar 14, 2022 0:30:18 GMT -5 Satin Spar variety of Gypsum

vegasjames gets rocks for Christmas Member since June 2013 Posts: 5,978	What am I Mar 14, 2022 1:23:59 GMT -5 hummingbirdstones and dillonf like this Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by vegasjames on Mar 14, 2022 1:23:59 GMT -5 Could be several things. Satin spar, ulexite or calcite. Does it react to acids such as vinegar?

dillonf Cave Dweller Member since February 2022 Posts: 91	What am I Mar 14, 2022 2:56:22 GMT -5 hummingbirdstones likes this Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by dillonf on Mar 14, 2022 2:56:22 GMT -5 Mar 13, 2022 23:46:58 GMT -5 Tommy said: Just for clarification dillonf did you shape it or is it as found? This was as it was found. I'll place some vinegar on some other pieces we found and report back.

dillonf
Cave Dweller

Member since February 2022
Posts: 91

What am I Mar 14, 2022 3:06:11 GMT -5 hummingbirdstones likes this

Quote

Post by dillonf on Mar 14, 2022 3:06:11 GMT -5

Mar 13, 2022 20:28:57 GMT -5 Pat said:

Can you show the back?

Looks manmade so far.

Thanks, hummingbirdstones
Robin

I'll get some more pictures today.

I'll also see if I can get any good pictures of the other specimens we found - they are much thinner in cross section and the colors are much more muted (hard to photograph).
The stones fracture/cleave in straight lines.

dillonf
Cave Dweller

Member since February 2022
Posts: 91

What am I Mar 14, 2022 16:18:29 GMT -5

Quote

Post by dillonf on Mar 14, 2022 16:18:29 GMT -5

Mar 14, 2022 3:06:11 GMT -5 dillonf said:

Mar 13, 2022 20:28:57 GMT -5 Pat said:

Can you show the back?

Looks manmade so far.

Thanks, hummingbirdstones
Robin

I'll get some more pictures today.

I'll also see if I can get any good pictures of the other specimens we found - they are much thinner in cross section and the colors are much more muted (hard to photograph).
The stones fracture/cleave in straight lines.

Photo of all sides and an additional specimen in the link below:

New Photos

The rock had no reaction to vinegar (6% acidity)

Cheers,
Dillon