Location: |
Manganese nodules. Pacific Ocean |
Major Minerals: |
Todorokite, birnessite, poorly crystalline iron and manganese hydroxides |
Trace Minerals: |
Include magnetite, ilmenite, haematite, rutile, pyrite, chalcopyrite, bornite, nicolite, covelline |
Textures: |
The nodules contain inclusions and cores of sedimentary clasts, older nodules or organic material. Complex collomorphic, higher and lower reflectance bands showing shrinkage cracks are typical |