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Calling all geologists! What is this reddish stuff?
Posted by: DP
Date: November 26, 2021 09:44PM
So as I shoot more and more of the artifacts I posted about a few days ago-

[forums.macresource.com]

-I'm noticing a recurrence of some reddish colored "bubbly" stuff as part of the rock used to make the artifacts. Here are some samples...

A close up of the material:



And the artifacts with this material as part of their makeup. It is rock and not something "growing" on them...







It definitely seems that the stone used is different so this reddish material doesn't seem to be associated with a certain type of stone/rock.

What say the forum geologists?





Why I needed a post to remind me of Buddy, I'll never know...


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Re: Calling all geologists! What is this reddish stuff?
Posted by: iaJim
Date: November 26, 2021 10:24PM
Looks like lichen.
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Re: Calling all geologists! What is this reddish stuff?
Posted by: Thrift Store Scott
Date: November 26, 2021 10:50PM
Iron oxide inclusions in the agate from which the arrowheads were made is my guess.

Quote
iaJim
Looks like lichen.

In the photos it kind of does. Looks-wise it reminds of a lichen I've seen growing on rocks in the desert that is vividly chartreuse in the spring and turns bright orange as the weather cools in the fall. I have no idea what it's official name is, I just call it Day-Glo Lichen.



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Re: Calling all geologists! What is this reddish stuff?
Posted by: jdc
Date: November 26, 2021 10:52PM






Edited 999 time(s). Last edit at 12:08PM by jdc.
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Re: Calling all geologists! What is this reddish stuff?
Posted by: Dennis S
Date: November 26, 2021 11:32PM
There is something that color on certain trees here in south Arkansas. I think I read it was a fungus.

Yep. Fungus. But my trees don’t get that bad, but look more like the rock pictures.



Edited 1 time(s). Last edit at 11/26/2021 11:36PM by Dennis S.
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Re: Calling all geologists! What is this reddish stuff?
Posted by: ztirffritz
Date: November 27, 2021 08:14AM
Looks like lichen to me.



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Re: Calling all geologists! What is this reddish stuff?
Posted by: DP
Date: November 27, 2021 08:21AM
This is not plant matter; it is rock so I'm going with iron oxide.

There is a lot of "rust" in the groundwater of Southern lower MI. Everyone with a well has to have a softener!





Why I needed a post to remind me of Buddy, I'll never know...


Disclaimer: This post is checked for correct spelling, punctuation, and grammar. Any attempts at humor are solely the responsibility of the author and bear no claim that any and all readers will approve or appreciate said attempt at humor.
My name is DP, and I approve this message.
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