This standard BS EN 12407:2019 Natural stone test methods. Petrographic examination is classified in these ICS categories:
91.100.15 Mineral materials and products
73.020 Mining and quarrying
This document specifies methods for making technical petrographic descriptions of natural stone, except for roofing slates. For this product, the method for the petrographic examination is defined in EN 12326-2. 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.
