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Hoelzel Classification

4 OXIDES

4.D Dioxides

4.DA Quartz-Group

4.DA.1

Quartz SiO2 trigonal P3121, P3221 32 4.DA.100

4.DA.3

Amethyst(Var.v. Quartz) SiO2 trigonal P3121, P3221 32 4.DA.350
Rose Quartz(Var.v. Quartz) SiO2 4.DA.360
Prase(Var.v. Quartz) SiO2 trigonal 4.DA.380
Aventurine(Var.v. Quartz) 4.DA.390
Milky Quartz(Var.v. Quartz) trigonal 4.DA.395

4.DA.4

Sceptre Quartz(Var.v. Quartz) 4.DA.400
Needle quartz(Var.v. Quartz) 4.DA.420
Twisted Quartz(Var.v. Quartz) SiO2 trigonal 4.DA.430
Window quartz(Var.v. Quartz) 4.DA.440
Fadenquartz(Var.v. Quartz) 4.DA.450

4.DA.5

Chalcedony(Var.v. Quartz) SiO2 4.DA.500
Carnelian(Var.v. Chalcedony) 4.DA.510
Sard(Var.v. Chalcedony) SiO2 4.DA.515
Jasper(Var.v. Chalcedony) SiO2 4.DA.520
Chrysoprase(Var.v. Chalcedony) 4.DA.540
Agate(Var.v. Chalcedony) SiO2 4.DA.560
Mossy Agate(Var.v. Agate) SiO2 4.DA.565
Heliotrope(Var.v. Chalcedony) SiO2 4.DA.570



Mineralsystematik-Übersicht