This European Standard specifies methods for making technical petrographic descriptions of natural stone, except for roofing slates. Although chemical and physical methods of analysis are required for petrographic classification of some stone types, these methods will not be described in this standard For this product, the method for the petrographic examination is defined in EN 12326-2.
DS/EN 12407:2007 history
2007DS/EN 12407:2007 Natural stone test methods - Petrographic examination