Primary stratigraphic controls on ore mineral assemblages in the Wannaway komatiite-hosted nickel-sulfide deposit, Kambalda camp, Western Australia

Mineralogy of Nickel and Cobalt Minerals in Xiarihamu Nickel–Cobalt Deposit, East Kunlun Orogen, China

“…The primary vein mineralization was magmatic as mentioned above. But the pyrrhotite and chalcopyrite were not completely metasomatized by the gersdorffite cluster along the fracture in the granite and formed a hackly erosion boundary along fractures ( Figures 4K,L, 5K), which might support their hydrothermal origin (Raič and Mogessie, 2015;Hazen et al, 2017;Moroni et al, 2017;Manuel et al, 2018;Stefan et al, 2018;Liang et al, 2019;Huang et al, 2020). During hydrothermal processes, nickel and cobalt in the silicate mineral lattice or earlier minerals were extracted or dissolved.…”

Partition behavior of platinum-group elements during the segregation of arsenide melts from sulfide magma

“…DOI: https://doi.org/10.2138/am-2020-7477. http://www.minsocam.org/ Ni sulfide deposit, Kambalda (Moroni et al 2017). In this last case, gersdorffite and irarsite crystallized from an arsenide melt segregated from sulfide melt before MSS crystallization took place at a temperature higher than 1200 ºC and are enriched in all take place.…”

“…Liquid immiscibility between arsenide and sulfide melts has been documented in several magmatic sulfide ores (e.g., Ronda, Spain, Gervilla et al 1996, Piña et al 2015 Amasined mineralization, Beni Bousera massif, Morocco, Gervilla et al 1996, Piña et al 2013Kylmäkoski deposit, Finland, Gervilla et al 1998;Dundonald Beach South deposit, Canada, Hanley 2007;Talnotry deposit, Scotland, Power et al 2004;Rosie Nickel prospect, Australia, Godel et al 2012; Wannaway komatiite-hosted Ni sulfide deposit, Kambalda, Australia, Moroni et al 2017). Among all these occurrences, the chromite-Ni arsenide mineralization of the Serranía de Ronda (Spain) probably represents the most interesting example due to its unique metallogeny and the well-This is the peer-reviewed, final accepted version for American Mineralogist, published by the Mineralogical Society of America.…”

“…Similarly, at the Dundonald Beach South deposit, Hanley (2007) concluded that komatiite magmas were contaminated with organic-rich shale rocks with high As/Sb ratios leading to the segregation of an arsenide melt. At the Wannaway komatiite-hosted Ni sulfide deposit, Moroni et al (2017) indicated that sulfidic shales containing accessory As and Te sulfosalts were the source of As via contamination of sulfide melts. Gervilla et al (1998) also suggested that arsenide melt segregation in Kylmaköski (Finland) resulted from contamination of parental silicate magma with Asrich Svecofenian metasediments (Lahtinen and Lestinen 1996).…”

“…http://www.minsocam.org/ melt is segregated from the original sulfide liquid. This mechanism of liquid immiscibility has successfully explained the formation of PGE-enriched arsenide and sulfarsenide minerals in close spatial relation with Fe-Ni-Cu sulfide minerals in a number of magmatic sulfide ores (Gervilla et al 1996(Gervilla et al , 1998Hanley 2007;Power et al 2004;Godel et al 2012;Piña et al 2013Piña et al , 2015Moroni et al 2017). Certainly, arsenide melt immiscibility is an uncommon process observed only in a few locations due to the unusually high As concentrations required in the sulfide magmas to segregate an arsenide melt.…”