90.20 Standard under periodical review Jul 15, 2024
CEN
CEN/TC 246 Natural stones
European Norm
73.020 Mining and quarrying | 91.100.15 Mineral materials and products
Published
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.
WITHDRAWN
EN 12407:2007
PUBLISHED
EN 12407:2019
90.20
Standard under periodical review
Jul 15, 2024