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What stone is around this fireplace?
  
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Rno8




Joined: 03 Feb 2019
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PostPosted: Feb 03, 2019 12:36    Post subject: What stone is around this fireplace?  

Can anyone tell me what kind of stone is around this fireplace? I believe it’s from the early 1900s.

I did a quick test and added a drop of apple cider vinegar to a small place and it didn’t etch, so I’m thinking it may not be marble?

Any help would be greatly appreciated! Thanks!



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Josele




Joined: 10 Apr 2012
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PostPosted: Feb 03, 2019 14:02    Post subject: Re: What stone is around this fireplace?  

The darkest one looks like a brecciated black marble and the brown one could be also a carbonate rock, maybe with any degree of metamorphism too.
Is more reliable to do the acid test with a drop of dilute hydrochloric acid. Cold vinegar is very little reactive, specially with dolomitic rocks.
Another interesting test is to check hardness trying to scratch a bottle glass with an edge of the fireplace. If you get easily a permanent scratch on the glass, this means that my guess is completely wrong, sorry.
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