Table 2 Identified crystalline phases of cave samples.

From: Characteristics and impact of aged coal ash with slag emplaced in a karst cave: the case of Divaška jama, Slovenia

Sediment

CAFAS

Quartz (SiO2)

Quartz (SiO2)

Lavendulan (NaCaCu5(AsO4)4Cl·5H2O)

Calcium carbonate (CaCO3)

Glauconite (K, Na)(Fe, Al, Mg)2(Si, Al)4O10(OH)2

Lead silicate (Pb2SiO4)

Volkonskoite (Ca0.3(Cr, Mg)2(Si, Al)4O10(OH)2·4H2O)

Albite (NaAlSi3O8)