Location: |
Hamersley Basin, Western Australia |
Major Minerals: |
Haematite, limonite |
Minor Minerals: |
Magnetite, stilpnomelane, minnesotaite, siderite, dolomite/ankerite, pyrite |
Textures: |
Iron oxides/hydroxides occur as fine laminae interbanded with chert. Fine banding of magnetite, haematite and limonite occur within the iron-rich laminae. Haematite forms coarse tabular crystals between the fine-grained laminae and is associated with limonite. Magnetite is altered to haematite (martitization) and limonite |
References: |
Ayres, 1972; Morris, 1980; 1985 |