Material question: Marble in the thermal mass?

Hi fellow permies,
I have a bunch of unpolished marble slabs laying around the garage. The landlord now finally agreed that they can go away. Before she pays someone to put them in a landfill: do you think it would be ok or even good material to include into the bench of a RMH?
I read it has a good heat conductivity and also heat capacity.
I would break it up and include it in the cob that will form the bench. Maybe even use them as the finish top of the bench.
Any thoughts?

Oh yes, marble would be great. Almost as good as granite, and you probably couldn't tell the difference in this application. I'd use them for finish surfaces if at all possible. It's bound to be an attractive feature and will develop a great patina over time as it gets reclined on.

Yes, marble is thermal mass because it is a dense material.

Marble can improve the home by absorbing external heat.

How would you use those marble slabs to absorb the heat?

Absolutely Ben;
They would make fine benchtops, and I have seen them used externally on a bell.
Keep them away from the extreme heat areas and they will be fine.

Thanks y’all. I’ll keep them then. If they end up on a bench I’ll try to remember to put a photo here

Ben,
Marble works great, I covered my entire bell with both marble and granite, And I think my reply will have it tagged (my build) and you can see how some of the granite was used. (lots of experimenting on the shell- but proven dimensions on the batch box were used)   Also-  I have every piece in place with nothing more than silicon, and I just gave the entire bell a review yesterday, and after a entire season of never with out at least three burns per day. Things look great.

Depending on how you like it to look, you can greatly increase your mass, by simply layering your marble in the thickest way that you would like to cut it i.e. 4" wide by 1.125" thick and how ever long I could cut up to 24" long were mine, with 80% simply 4 x 4 x 1.25" So even small pieces work well..

The entire rear of my brick bell, is a 4" thick shell of granite, dry stacked only. There is marble on it as well,  Little difference in the capabilities to be found.

Marble will cut easier on a brick/wet saw/

Best of success.

Scott