KFe2+3(AlSi3O10)(OH)2
Annite is a dark-coloured mica, and is probably more common that recorded. It is difficult to distinguish visually from other dark (“biotite”) micas.
Selected Australian Occurrences:
- Broken Hill, New South Wales.
- Thackaringa, New South Wales.
- In granite at the Anchor Mine, and common in many other granites in northeast Tasmania.
