Fire Clay or Red Clay?

New to cob and permies. I have read and tried to soak in as much info as I can about cob the past week or so but still have a few questions before I get started on my first project.

My question is can you use Red clay for cob?
How would it compare to other clays used?

The plan is to build a small "survival shelter" for my daughter to use as a playhouse. My first step is to build a small cob oven and build a back wall around it with shelves and a bench. The rest will be made of bamboo and have a living roof.

can you use Red clay for cob?

YES! Any clay will do, but typically the majority of cob is sand you only need 20-30% of the mix to clay, the rest sand and some fiberous material.

How would it compare to other clays used?

Not too sure as I've never worked with red clay but the end product will probably be red!

Have fun!

YES! Any clay will do, but typically the majority of cob is sand you only need 20-30% of the mix to clay, the rest sand and some fiberous material.

How would it compare to other clays used?

Not too sure as I've never worked with red clay but the end product will probably be red!

Have fun!

Thanks for the info!
My hubby dropped off a few bucket loads of sand and clay earlier, I now have a few sample bricks drying!