Winchite Explained

Imasymbol:	Wnc^[1]
System:	Monoclinic
Mohs:	5½
Streak:	Pale blue-grey
Lustre:	Vitreous

Winchite is a mineral in the amphibole group.^[2]

Name

The mineral is named after Howard James Winch, who was the one discovered it in Madhya Pradesh, India.^[3] Sir Lewis Fermor was the one who named the mineral.^[4]

Winchite is also called Aluminowinchite or Eckrite.

Chemistry

Winchite has a chemical composition similar to tremolite. But it contains iron, potassium, sodium, and manganese.^[5]

Occurrence

Winchite occurs on grains of riebeckite.^[6] 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.^[7]

References

1. Warr. L.N.. 2021. IMA–CNMNC approved mineral symbols. Mineralogical Magazine. 85. 3. 291–320. 10.1180/mgm.2021.43. 2021MinM...85..291W. 235729616. free.
2. Web site: Mineral Database - Mineralogy of Wales. 2021-11-07. National Museum Wales. en.
3. Web site: Winchite. 2021-11-07. www.mindat.org.
4. 10.1.1.602.4009. End Member.
5. Book: Mineralogical Magazine. 1907. Oxford University Press. 413. en.
6. Book: Ring. Uwe. Exhumation Processes: Normal Faulting, Ductile Flow and Erosion. London. Geological Society of. Brendan. M. T.. Lister. G.. Willett. Sean D.. 1999. Geological Society of London. 978-1-86239-032-4. en.
7. Web site: Winchite [NaCa][(Mg; Fe2+)4Al]Si8O22(OH)2]. 2023-10-06.