winchite
{{Short description|Mineral}}
{{Lead too short|date=November 2021}}{{Infobox mineral|image=File:Hackmanite, winchite 1.JPG| IMAsymbol = Wnc{{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}}|system=Monoclinic|mohs=5½|streak=Pale blue-grey|lustre=Vitreous}}
Winchite is a mineral in the amphibole group.{{Cite web|title=Mineral Database - Mineralogy of Wales|url=https://museum.wales/mineralogy-of-wales/database/?mineral=234&name=Winchite|access-date=2021-11-07|website=National Museum Wales|language=en}}
Name
The mineral is named after Howard James Winch, who was the one discovered it in Madhya Pradesh, India.{{Cite web|title=Winchite|url=https://www.mindat.org/min-4296.html|access-date=2021-11-07|website=www.mindat.org}} Sir Lewis Fermor was the one who named the mineral.{{Cite CiteSeerX|citeseerx=10.1.1.602.4009|title=End Member}}
Chemistry
Occurrence
Winchite occurs on grains of riebeckite.{{Cite book|last1=Ring|first1=Uwe|url=https://books.google.com/books?id=KxnB3szzvzgC&dq=winchite&pg=PA140|title=Exhumation Processes: Normal Faulting, Ductile Flow and Erosion|last2=London|first2=Geological Society of|last3=Brendan|first3=M. T.|last4=Lister|first4=G.|last5=Willett|first5=Sean D.|date=1999|publisher=Geological Society of London|isbn=978-1-86239-032-4|language=en}}{{Rp|137}} It can be found in schist with metamorphosed manganese deposits.
Distribution
It has been found on the south eastern part of Anglesey. It has been found in Kajlidongri mine located in India as well at Ward creek in California.{{cite web|url=http://www.handbookofmineralogy.org/pdfs/winchite.pdf | access-date=2023-10-06| title=Winchite [NaCa][(Mg; Fe2+)4Al]Si8O22(OH)2}}