Zaisho

Zaisho is the name of a stony-iron pallasite meteorite whose fall in Japan in February 1898 was recorded by observers on the ground.^[1][2] Zaisho made landfall in the city of Kami, located in the prefecture of Kōchi on Shikoku Island.^[3] Zaisho weighs approximately 0.33kg (12oz) and exhibits a rare composition of primarily iron rich phosphoran olivine, and pyroxene. Zaisho also contains traces of stanfieldite, farringtonite, troilite, schreibersite, chromite, and mg-phosphate, albeit in smaller amounts.^[1][4][5] Notably, Zaisho is also one of two confirmed meteorite landings to take place on the island of Shikoku^[1], and as of 2019 it remains one of only four known pallasite falls, along with Marjalahti, Mineo and Omolon.^[4] Currently, access to Zaisho is not available to the public as the main mass of the meteorite is being held in a private collection.^[4]

Zaisho meteorite
Type	Stony-iron
Class	Pallasite
Group	Pallasite main group, anomalous[1]
Country	Japan[1]
Region	Shikoku
Coordinates	33°42′N 133°48′E[1]
Observed fall	Yes
Fall date	1898[2]
TKW	330 grams (12 oz)[1]

See also

• Glossary of meteoritics

References

1. "Zaisho". Meteoritical Bulletin Database. Meteoritical Society. Retrieved 8 January 2013.
2. "METEORITE FALLS CALENDAR - FEBRUARY". impactika.com. Retrieved 18 October 2014.
3. Hudson Institute of Mineralogy. (2016). Zaisho meteorite, Kami City, Kochi Prefecture, Japan. Mindat.org. https://www.mindat.org/loc-262253.html
4. Buseck, Peter R.; Jim Clark (June 1984). "Zaisho a pallasite containing pyroxene and phosphoran olivine" (PDF). Mineralogical Magazine. 48 (347): 229–35. Bibcode:1984MinM...48..229B. CiteSeerX 10.1.1.608.9261. doi:10.1180/minmag.1984.048.347.06. Retrieved 8 January 2013.
5. Shima, M., Okada, A., & Yabuki, H. (1980). Mineralogical and petrographical study of the Zaisho meteorite, a pallasite from Japan. Zeitschrift fuer Naturforschung Teil A, Physik, Physikalische Chemie, Kosmophysik, 35(1), 64-68.