Cobalt mineralization at Mount Isa, Queensland, Australia, with references to Mount Cobalt

The Idaho cobalt belt, northwestern United States ? A metamorphosed Proterozoic exhalative ore district

“…At the Mt. Isa deposit, some mineralized zones which are rich in copper also contain cobaltite (Croxford 1974).…”

Aqueous oxidation of pyrite by molecular oxygen

“…Framboidal pyrite has been discussed by a number of authors.23 '28 Czyscinski29 showed that framboidal material was formed during the past 30 years beneath abandoned rice paddies in Thailand. It has been suggested that in some cases framboidal pyrite is a necessary precursor to the euhedral form;28,30 this is sup-ported by the discovery of framboidal cores in euhedral pyrite grains,31 framboidal cores in euhedral cobaltite, 32 and euhedral overgrowths on dispersed framboids.33 Caruccio18,34 observed that in coal seams formed in a brackish marine paleoenvironment a higher proportion of the total sulfur was framboidal rather than euhedral pyrite compared to that associated with coal seams formed in a freshwater paleoenvironment. However, it is not clear whether the brackish marine paleoenvironment favored the formation and retention of framboidal pyrite or prevented the subsequent transformation to euhedral pyrite.…”

“…The adsorption mechanisms are effectively chemical reactions at the pyrite surface involving adsorbed oxygen. An alternative approach is an electrochemical (31) (32) surface a theo- mechanism with separate anodic reactions (eq 15 and 16) and a cathodic reaction (eq 20).…”

The Petrology and Geochemistry of Alteration Assemblages in the Eastern Creek Volcanics, as a Guide to Copper and Uranium Mobility Associated with Regional Metamorphism and Deformation, Mount Isa, Queensland

“…The elements Ni, Co, and MnO, depleted in the chlorite 4-albite type, are present in the copper ore bodies in trace amounts (O'Meara 1961;Croxford 1974). …”