Ca(Fe2+,Mg)(CO3)2
Ankerite occurs as cream-coloured rhombohedral or saddle-shaped crystals and is very difficult to visually distinguish from ferroan dolomite. Some reported occurrences may in fact be ferroan dolomite.
Selected Australian Occurrences:
- As thin yellow to brown branching veins up to several tens of centimetres length in the limestone of Jenolan Caves, New South Wales.
- Henty Gold Mine, Tasmania.
- Renison Mine, Tasmania.
- In carbonate veins in the Victorian goldfields.
