Winchite

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Winchite
General
CategoryMineral
IMA symbolWnc[1]
Crystal systemMonoclinic
Identification
Mohs scale hardness5½
LustreVitreous
StreakPale blue-grey

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.[3]

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]: 137  It can be found in schist with metamorphosed manganese deposits.[7]

Distribution

It has been found on the south eastern part of Anglesey.[2] 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. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
  2. ^ a b "Mineral Database - Mineralogy of Wales". National Museum Wales. Retrieved 2021-11-07.
  3. ^ a b "Winchite". www.mindat.org. Retrieved 2021-11-07.
  4. ^ "End Member". CiteSeerX 10.1.1.602.4009.
  5. ^ Mineralogical Magazine. Oxford University Press. 1907. p. 413.
  6. ^ Ring, Uwe; London, Geological Society of; Brendan, M. T.; Lister, G.; Willett, Sean D. (1999). Exhumation Processes: Normal Faulting, Ductile Flow and Erosion. Geological Society of London. ISBN 978-1-86239-032-4.
  7. ^ a b "Winchite [NaCa][(Mg; Fe2+)4Al]Si8O22(OH)2" (PDF). Retrieved 2023-10-06.
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