Ankerite [ Ca(FeII,Mg)(CO3)2 ]

Material properties

Formula Ca(FeII,Mg)(CO3)2
Abbreviation Ank
IMA Status Grandfathered (pre-IMA), 1825
Crystal symmetry Trigonal
Classifications Dolomite (group), Minerals containing CO3
Search other databases webmineral.com, mindat.org, rruf.info, mineralienatlas.de, Handbook of Mineralogy, American Mineralogist Crystal Structure Database
Tags Carbonate, Mineral

Composition

Element Wt%
Mg 3.53
Ca 19.42
Mn 2.66
Fe 16.24
C 11.64
O 46.51
Total: 100

Specimens of Ankerite

Name Owner Materials Phase purity Image
M0302 Sphalerite CSIRO Ankerite (41.8%), Chalcopyrite, Dolomite, Galena, Quartz, Sphalerite 41.8
M2096 Scheelite CSIRO Ankerite (25.0%), Arsenopyrite, Fluorapatite, Muscovite-2M1, Pyrite, Quartz, Scheelite 25.0
M0339 Pyrite CSIRO Ankerite (5.5%), Dolomite, Muscovite, Muscovite-1M, Muscovite-2M1, Pyrite, Quartz 5.5
M0188 Scheelite CSIRO Ankerite (3.9%), Dolomite, Quartz, Scheelite, Stibnite 3.9
M0834 Ankerite CSIRO Albite (var. Ca), Ankerite (3.1%), Augite, Forsterite (var. Fe), Ilmenite, Montmorillonite, Sanidine 3.1
M0014 Stibnite CSIRO Ankerite (2.1%), Muscovite-1M, Muscovite-2M1, Quartz, Stibnite 2.1
M2597 Bornite CSIRO Ankerite (2.0%), Bornite, Calcite, Chalcocite, Digenite, Quartz 2.0
MES124 Hambergite CSIRO Albite, Ankerite (2.0%), Cookeite, Hambergite (var. F), Microcline, Orthoclase, Quartz 2.0
M0185 Scheelite CSIRO Ankerite (1.8%), Magnesio-hornblende (var. Fe2+), Molybdenite-2H, Quartz, Scheelite 1.8
SHCa1.2 Hectorite CSIRO Ankerite (1.5%), Calcite (var. Mg), Hectorite, Quartz 1.5