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You are right Neil. Sorry can not help.

Neil it could be CF with those "holes" as I am trying to learn more about them I collect even rock they come from and one of the samples does have small holes in it which look like it was smashed...

Nice stones. Well done. As you said two are 100% CFs. The left one looks simmilar to one of my sandstones (prety hard to lap, quite coarse but very pretty). The second from left could be one of the...