Bilal, Essaid
Chemical properties of helvite group minerals in different types of occurrences - Rotterdam A.A. Balkema 1991 - pp. 719-722 ilus.
ASOCIACION MINERAL
GEOQUÍMICA
HELVITA
PARAGENESIS
PROPIEDADES QUIMICAS
SILICATOS
553.21/.24/P16|4
Chemical properties of helvite group minerals in different types of occurrences - Rotterdam A.A. Balkema 1991 - pp. 719-722 ilus.
ASOCIACION MINERAL
GEOQUÍMICA
HELVITA
PARAGENESIS
PROPIEDADES QUIMICAS
SILICATOS
553.21/.24/P16|4