Diadochite

Diadochite, also known as destinezite, is a clay mineral. It is a secondary mineral formed by the weathering and hydration of other minerals. Its formula is Fe2(PO4)(SO4)OH·5H2O.

It has a greenish yellow to brown colour and forms nodules or crusts. Its appearance has been compared to cauliflower.

Identified originally in Belgium in 1831, it has been found in many places throughout the world.

Diadochite