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Hoelzel Classification

6 Borates

6.D Tetraborates

6.DA Nesotetraborates

6.DA.1 Borax-Group - 4(2P+2T)
Hungchaoite MgB4O5(OH)4·7H2O triklin P1 1 6.DA.100
Fedorovskite Ca2(Mg,Mn)2B4O7(OH)6 orthorhombisch Pbam mmm 6.DA.120
Roweite Ca2Mn22+B4O7(OH)6 orthorhombisch Pbam mmm 6.DA.130
Tincalconite Na2B4O5(OH)4·3H2O trigonal R32 32 6.DA.160
Borax Na2B4O5(OH)4·8H2O monoklin C2/c 2/m 6.DA.170

6.DA.2 Borcarite-Group - 4(4T)
Borcarite Ca4MgB4O6(OH)6(CO3)2 monoklin C2/m 2/m 6.DA.200
Alfredstelznerite Ca4(H2O)4[B4O4(OH)6]4(H2O)15 orthorhombisch Pca21 mm2 6.DA.200
Numanoite Ca4CuB4O6(OH)6(CO3)2 6.DA.210



Mineralsystematik-Übersicht