Tile identification

[Rob Grady]

I am no expert on tile identification. I did an onsite evaluation of 1130sf of this tile today. What procedure would you experts recommend?
I have the Turbo Force, 175 machine, truck mounted unit and the Mikey Grinder handpiece.

 

[BIG WOOD]

It looks like a travertine wannabe that's ceramic. Just a normal alkaline treatment will clean it up nice