caracolite
/ˌkærəkəˈlaɪt/Definitions
1. noun
A manganese iron phosphate mineral, Mn,FePO4·H2O.
“The geologist found caracolite in the ancient rock formation.”
2. noun
A secondary mineral formed from the alteration of phosphates, particularly in iron-rich environments.
“Caracolite is often found in iron-rich environments where phosphate minerals are present.”