Category talk:Sedimentary rocks

Category:Building stone
I have made Category:Building stone a sub category of Category:Sedimentary rocks but have not completed the job of of the necessary transfer of building stones from the Category:Sedimentary rocks list. I thought it best to give people an opportunity to comment before going too far. There is the problem of the granite and marble building stones which are not sedimentary but a Building stones category would be useful to people interested in architecture, for example. (RJP 18:00, 17 January 2007 (UTC))