Jamborite
{{Infobox mineral|boxwidth=|boxtextcolor=black|boxbgcolor=lightgreen|name=Jamborite|image=|imagesize=|caption=|formula=Ni2+1-xCo3+x(OH)2-x(SO4)x · nH2O|IMAsymbol=Jbr|system=Hexagonal|color=Green|cleavage=Perfect|fracture=|mohs=|opticalprop=Uniaxial (−)|refractive=nω = 1.607 nε = 1.602|birefringence=0.0050|pleochroism=|dispersion=|streak=|gravity=2.67|density=2.67 g/cm3|diagnostic=|references={{cite web | url=https://webmineral.com/data/Jamborite.shtml | title=General Jamborite Information
}}|lustre=}}
Jamborite is a hexagonal-trigonal, green, mineral consisting of nickel, cobalt, hydroxides and sulphur. Its discovery was first published in 1973.{{Cite journal |last1=Morandi |first1=N. |last2=Dalrio |first2=G. |date=1973-10-01 |title=Jamborite: A New Nickel Hydroxide Mineral From the Northern Apennines, Italy |url=https://pubs.geoscienceworld.org/msa/ammin/article-abstract/58/9-10/835/542881/Jamborite-A-New-Nickel-Hydroxide-Mineral-From-the?redirectedFrom=PDF |journal=American Mineralogist |volume=58 |issue=9–10 |pages=835–839 |issn=0003-004X}}
Etymology
It is named after John Leslie Jambor, a Canadian geologist.
Properties
It has a lamellar structure, superficially resembling grass.{{Cite web |title=Jamborite |url=https://www.mindat.org/min-2070.html |access-date=2025-04-27 |website=www.mindat.org}}
It was formerly believed to be in the hydrotalcite supergroup, but was later disproved.{{Cite journal |last1=Bindi |first1=Luca |last2=Christy |first2=Andrew G. |last3=Mills |first3=Stuart J. |last4=Ciriotti |first4=Marco E. |last5=Bittarello |first5=Erica |date=September 2015 |title=New Compositional and Structural Data Validate the Status of Jamborite |url=http://www.canmin.org/lookup/doi/10.3749/canmin.1400050 |journal=The Canadian Mineralogist |language=en |volume=53 |issue=5 |pages=791–802 |doi=10.3749/canmin.1400050 |bibcode=2015CaMin..53..791B |issn=0008-4476|hdl=1885/152280 |hdl-access=free }}
Distribution
This mineral has been found in the Northern Apennines of Italy, Spain and Wales.{{Cite web |title=Mineral Database |url=https://amgueddfa.cymru/mwnyddiaeth-cymru/database/?mineral=291&name=Jamborite |access-date=2025-04-27 |website=Museum Wales |language=cy}}{{Cite web |title=Jamborite - RRUFF Database: Raman, X-ray, Infrared, and Chemistry |url=https://rruff.info/Jamborite |access-date=2025-04-27 |website=rruff.info}}
Media appearances
{{Unsourced section|date=April 2025}}
It is featured in the Stardew Valley video game as a minor item obtained from geodes.