Location: |
Little Broken Hill, New South Wales, Australia |
Major Minerals: |
Magnetite |
Minor and Trace Minerals: |
Haematite, ilmenite, rutile, gahnite, minerals pyrite, pyrrhotite, chalcopyrite, cubanite, sphalerite, galena, marcasite |
Textures: |
Magnetite, garnet and quartz are equidimensional with 120' triple junctions. Magnetite-rich layers are interbanded with iron-poor layers. Minor intergrowths of magnetite-ilmenite-rutile-haematite are present. Ilmenite lies between grain boundaries of magnetite or as laths along (111) planes within magnetite. Pyrite has pyrrhotite, chalcopyrite, galena and magnetite inclusions. Pyrrhotite alters to pyrite and marcasite. Surface oxidation of magnetite to haematite to give martite pseudomorphs after magnetite is common in outcrop |
References: |
Richards, 1966; Stanton, 1976 |