Hoelzel Classification


5.A Carbonates (-Anions -Water)

5.AB Carbonates: hexagonal or trigonal

5.AB.1 Calcite-Group

Calcite CaCO3 trigonal R3c 3m 5.AB.100
Vaterite CaCO3 hexagonal P63/mmc 6/mmm 5.AB.105
Otavite CdCO3 trigonal R3c 3m 5.AB.110
Magnesite MgCO3 trigonal R3c 3m 5.AB.130
Siderite Fe2+CO3 trigonal R3c 3m 5.AB.140
Spherocobaltite CoCO3 trigonal R3c 3m 5.AB.145
Gaspéite (Ni,Mg,Fe2+)CO3 trigonal R3c 3m 5.AB.150
Rhodochrosite Mn(CO3) trigonal R3c 3m 5.AB.160
Smithsonite ZnCO3 trigonal R3c 3m 5.AB.170

5.AB.2 Double Carbonates - Dolomite-Group

Dolomite CaMg(CO3)2 trigonal R3 3 5.AB.200
Ankerite Ca(Fe2+,Mg,Mn)(CO3)2 trigonal R3 3 5.AB.210
Kutnohorite CaMn2+(CO3)2 trigonal R3 3 5.AB.220
Minrecordite CaZn(CO3)2 trigonal R3 3 5.AB.230
Eitelite Na2Mg(CO3)2 trigonal R3 3 5.AB.240
Norsethite BaMg(CO3)2 trigonal R3m 3m 5.AB.260
Bütschliite K2Ca(CO3)2 trigonal R3m 3m 5.AB.280

5.AB.3 Other Double Carbonates

Khanneshite (NaCa)3(Ba,Sr,Ce,Ca)3(CO3)5 hexagonal P63mc 6mm 5.AB.300
Sanrománite Na2CaPb3(CO3)5 hexagonal P63mc 6mm 5.AB.305
Burbankite (Na,Ca)3(Sr,Ba,Ce)3(CO3)5 hexagonal P63mc 6mm 5.AB.310
Calcioburbankite Na3(Ca,Ce,La,Sr)3(CO3)5 hexagonal P63mc 6mm 5.AB.315
Zemkorite (Na,K)2Ca(CO3)2 hexagonal P63mc, P62c, P63/mmc 6mm, 6m2, 6/mmm 5.AB.320
Fairchildite K2Ca(CO3)2 hexagonal P63/mmc 6/mmm 5.AB.330
Gregoryite (Na2,K2,Ca)CO3 hexagonal P63mc 6mm 5.AB.340
Olekminskite Sr(Sr,Ca,Ba)(CO3)2 trigonal P321 32 5.AB.360
Paralstonite BaCa(CO3)2 trigonal P321 32 5.AB.365
Huntite CaMg3(CO3)4 trigonal R32 32 5.AB.380
Benstonite (Ba,Sr)6(Ca,Mn)6Mg(CO3)13 trigonal R3 3 5.AB.390


Juangodoyite Na2Cu(CO3)2 monoklin P21/a 2/m 5.AB.400
Paratooite-(La) (La,Ca,Na,Sr)6Cu(CO3)8 orthorhombisch Pmmm, P2221 mmm, 222 5.AB.440


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