Editing Cobaltite (section)

{{Short description|Sulfide mineral composed of cobalt, arsenic, and sulfur}}
{{Infobox mineral
| name        = Cobaltite
| category    = [[Sulfide mineral]]
| boxwidth    = 
| boxbgcolor  = 
| image       = Koboltglans.jpg
| imagesize   = 
| caption     = Cobaltite from [[Sweden]]
| formula     = CoAsS
| IMAsymbol=Cbt<ref>{{Cite journal|last=Warr|first=L.N.|date=2021|title=IMA–CNMNC approved mineral symbols|journal=Mineralogical Magazine|volume=85|issue=3|pages=291–320|doi=10.1180/mgm.2021.43|bibcode=2021MinM...85..291W|s2cid=235729616|doi-access=free}}</ref>
| molweight   = 
| strunz      = 2.EB.25
| system      = [[Orthorhombic]]
| class       = Pyramidal (mm2) <br/><small>(same [[H-M symbol]])</small>
| symmetry    = ''Pc2''<sub>1</sub>b
| unit cell   = a = 5.582&nbsp;Å, <br/>b = 5.582&nbsp;Å, <br/>c = 5.582&nbsp;Å; Z&nbsp;=&nbsp;4
| color       = Reddish silver white, violet steel gray to black 
| habit       = Granular to massive, rarely as striated crystals, pseudocubic.
| twinning    = About [111] creating pseudo-cubic forms and striations
| cleavage    = Perfect on {001}
| fracture    = Uneven
| tenacity    = Brittle
| mohs        = 5.5
| luster      = Metallic
| refractive  = 
| opticalprop = 
| birefringence = 
| pleochroism = 
| streak      = Grayish-black
| gravity     = 
| density     = 6.33 g/cm<sup>3</sup>
| melt        = 
| fusibility  = 
| diagnostic  = 
| solubility  = 
| diaphaneity = Opaque
| other       = 
| references  = <ref>[https://www.mineralienatlas.de/lexikon/index.php/MineralData?mineral=Cobaltite Mineralienatlas]</ref><ref name=Handbook>http://rruff.geo.arizona.edu/doclib/hom/cobaltite.pdf Mineral Handbook</ref><ref name=Webmin>http://webmineral.com/data/Cobaltite.shtml Webmineral data</ref><ref name=Report>https://www.corfo.cl/sites/Satellite?blobcol=urldata&blobkey=id&blobtable=MungoBlobs&blobwhere=1475166619420&ssbinary=true {{Webarchive|url=https://web.archive.org/web/20200722193444/https://www.corfo.cl/sites/Satellite?blobcol=urldata&blobkey=id&blobtable=MungoBlobs&blobwhere=1475166619420&ssbinary=true |date=2020-07-22 }} Corfo Report</ref>
}}
'''Cobaltite''' is an [[arsenide]] and [[sulfide]] mineral with the mineral formula [[cobalt|Co]][[arsenic|As]][[sulfur|S]]. It is the naming mineral of the [[cobaltite group]] of minerals, whose members structurally resemble [[pyrite]] (FeS<sub>2</sub>).