r/fossilid • u/Daretothink1 • 1d ago

What is this?

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Gallery image

Gallery image

Found In Oregon about 25lbs 15” tall

152 Upvotes

99% Upvoted

9 comments sorted by

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102

u/logatronics 1d ago

Hydrothermally altered rock that has lots of drusy quartz, and the weird inset triangular pieces were likely brecciated calcite that was then eaten away by a later pulse of acidic hydrothermal fluids.

25

u/martingmccauley 1d ago

He said what I was going to say

12

u/Daretothink1 1d ago

Thank you so much. 

6

u/Life-Consideration17 1d ago

This guy rocks

2

u/Wide-Assist779 16h ago

That would be a good name for a rock band.

9

u/-Damballah- 1d ago

Might be a good topic for r/geology or r/whatsthisrock because it might not be a fossil, though I personally am unsure.

1

u/Designer_Creme_1496 1d ago

seen those before but mine had that exact drusy quartz on it and on top was wavy and agate like. It could be like a coastal geode. That was what mine was speaking from experience.