caveman

Ok reprocessing some now working on some pictures as well 

Thanks for the response ok first when I pulled the fired pieces out I wipe off the ash with a damp rag the first time I knew I was not close because they were still clay they started to go soft and would have dissolved I think but I will put some in and let you know.
I will get some pictures for you if it helps I am in Zanesville pretty close to the licking river about the middle of an old bluff I think . a chunk of it came out from under the house I had to replace a couple of the original block that was used for door between the basement and coal room I figured that spot probably had not been disturbed since the house was built over a 100 years ago I wondered if and how it would have been effected that close to the coal room the floor in basement is concrete and the coal room looks like red brick. I think that is the spot where I seen the white mostly unfortunately I don't have pictures of the stuff I got there and there is a very heavy house on it.  At one time there was a draining issues and water did come in basement for how long don't know but at least a season probably a lot longer. I will work on those pictures for you. I hope these details are of help.
I was wondering the same thing.... Wait let me rephrase that I was wondering if I was washing away the stuff that I should have been keeping.  My thinking was maybe clay brick had like certain size particles and white porcelain was like really fine particles 
Thanks
Caveman