From the pic it is hard to tell. I have seen Porcelain tiles that look just like slate...so it could be porcelain too
Frederick M. Hueston
www.stoneforensics.com 321 514 6845
-----Original Message-----
From: stuart rosen <mail@stoneshine.com>
To: sccpartners <sccpartners@stoneandtilepros.simplelists.com>
Sent: Sat, Apr 18, 2015 9:56 am
Subject: Stone ID
I was thinking this was a slate-Would anyone know this material?