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Petrified wood in metamorphic rock?


CornelDumitru

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Hello!

 

Please help me find out if the arched bands showing up after polishing this metamorphic rock are just random artifacts of sedimentation or an indication for petrified wood?

The material reacts to vinegar. I picked the stone in Romania, Harghita county.

 

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Thank you!

 

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Seems to be a quartz band running through sandstone. 

Maybe. 

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1 hour ago, CornelDumitru said:

The material reacts to vinegar.

Sounds like calcite in sandstone. If it takes a polish metamorphic to some degree is a safe bet. I don't think it's wood.

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What reacts to vinegar? 

The white material, the grey rock or both? 

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3 minutes ago, Tidgy's Dad said:

What reacts to vinegar? 

The white material, the grey rock or both? 

Both. None energetically (to table vinegar), but both produce bubbles.

 

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Then it's possibly calcite in limestone. 

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Counter offer; limy sandstone, bordering on marble a little bit.

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