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Unusual Concretion

sward

By sward
in Fossil Hunting Trips

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sward Regular Member

sward

Posted
Posted (edited)

I took a road trip today and hit everything from the Austin Chalk in Ellis County, TX:

post-6450-0-72553300-1368818543_thumb.jpg

to the Goodland limestone of western Tarrant County, TX:

post-6450-0-18383400-1368818639_thumb.jpg

While in the Austin Chalk of Ellis County, I found this unusual concretion:

post-6450-0-47742600-1368818850_thumb.jpgpost-6450-0-24897000-1368818876_thumb.jpg

The piece is approximately 50mm x 25mm.

I thought the "vertical" structure seemed unusual.

Edited by sward

SWard
Southeast Missouri

(formerly Dallas/Ft. Worth, TX)

USA

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Auspex Regular Member

Auspex

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Gypsum or calcite, maybe?

"There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant

“Try to learn something about everything and everything about something.” - Thomas Henry Huxley

>Paleontology is an evolving science.

>May your wonders never cease!

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vertman Regular Member

vertman

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It also looks like some sort of mineral, possibly calcite to me.

It looks like a nice road trip. Think about how many millions of years you traversed on your trip back in time from the Austin Group to the Fredericksburg Group.

I take it the Austin did not yield many goodies?

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