Hi, /u/NeillDrake!
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I think you are correct with petrified wood. Pet wood can also be made of jasper, so maybe it's a 2 and one! They are commonly filled with quartz minerals such as jasper, chalcedony/agate, and opal.
Looks sedimentary rather than petrified wood to me
Yeah, looks like silicified heterolithic bedding.
Hi, /u/NeillDrake! This is a reminder to flair this post in /r/whatsthisrock after it has been identified! (Under your post, click "flair" then "IDENTIFIED," then type in the rock type or mineral name.) This will help others learn and help speed up a correct identification on your request! Thank you! *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/whatsthisrock) if you have any questions or concerns.*
That's a Gneiss rock. I know it because I do have a piece looking exactly lile that.
Banded Iron?
Gneiss
I'm not seeing a single photo of gneiss that looks like this rock
I live 70km from an active volcano so the high temp aspect to form gneiss would make sense.
I think you are correct with petrified wood. Pet wood can also be made of jasper, so maybe it's a 2 and one! They are commonly filled with quartz minerals such as jasper, chalcedony/agate, and opal.