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Cool rock I found in a parking lot (media.piefed.world)
submitted 8 months ago by to c/cool_rocks@lemmy.today
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Any idea what kind it is?

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[–] 2 points 7 months ago (2 children)

I think it's some kind of (maybe hydrothermally altered) sandstone.

That vein is quartz, i'm pretty sure. Does the rest have a slightly grainy texture or is it smooth?

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  • [–] [S] 1 point 7 months ago* (last edited 7 months ago) (1 child)

    It's fairly smooth. I agree the vein is quartz.

    I think it might be petrified wood

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  • [–] 1 point 7 months ago* (last edited 7 months ago)

    I don't know. Petrified wood isn't all that common. Why do you think it's that?

    To me it looks like a finegrained, silicious, sedimentary rock. Might be slightly hydrothermally altered or metamorphosed, can't really tell from the photos.

    That's not to take away from the coolness of the rock though. It absolutely is a cool rock. I absolutely adore that quartz vein.

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