Editing Cobaltite (section)

== Occurrences ==
Although rare, it is mined as a significant source of the strategically important metal cobalt. It occurs in high-temperature [[hydrothermal]] deposits and [[Contact metamorphism|contact metamorphic]] rocks. It occurs in association with [[magnetite]], [[sphalerite]], [[chalcopyrite]], [[skutterudite]], [[allanite]], [[zoisite]], [[scapolite]], [[titanite]], and [[calcite]] along with numerous other Co–Ni sulfides and arsenides.<ref name=Handbook/> 
It is found chiefly in [[Sweden]], [[Norway]], [[Germany]], [[Cornwall, England]], [[Canada]], La Cobaltera<references group="https://www.bloomberg.com/news/features/2018-08-14/battery-boom-spurs-quest-to-resurrect-world-war-ii-cobalt-mines" />, Chile, [[Australia]], the [[Democratic Republic of the Congo]], and [[Morocco]].<ref name="Handbook" /><ref name="Klein" /><ref name="Report" />  Crystals have also been found at [[Khetri]] in [[Rajasthan]], and under the name ''sehta'' the mineral was used by [[Indian people|Indian]] jewellers for producing a blue [[Vitreous enamel|enamel]] on gold and silver ornaments.<ref name="EB1911">{{EB1911|inline=y |first=Leonard James |last=Spencer |author-link=Leonard James Spencer |wstitle=Cobaltite|volume=6|page=605}}</ref>

Secondary [[weathering]] incrustations of [[erythrite]], hydrated cobalt [[arsenate]], are common.{{Citation needed|date=April 2022}}

A variety containing much iron replacing cobalt, and known as ferrocobaltite ({{langx|de|link=no|Stahlkobalt}}), was found at [[Siegen]] in [[North Rhine-Westphalia|Westphalia]].<ref name="EB1911"/>