Metadata, specific surface area of pure basalt samples obtained from the buried mesh bags in mesocosms, determined with the Brunauer-Emmet-Teller method associated with measurements in Niron et al. 

Exploring the Synergy of Enhanced Weathering and Bacillus subtilis: A Promising Strategy for Sustainable Agriculture. 

Id_sample: the sample definition consisting of Unweathered_basalt, Basalt (from Bt treatment), Basalt_bacillus (from Bt_Bac) treatment and standard (alpha-Alumina-102) with information regarding the replication
SSA_(m2/g): specific surface area
St_dev: Standard deviation for the standard (alpha-Alumina 102) measurements