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⇱ Zaisho meteorite, Kami City, Kochi Prefecture, Japan

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Zaisho meteorite, Kami City, Kochi Prefecture, Japani
Regional Level Types
Zaisho meteoriteMeteorite Fall Location
Kami CityCity
Kochi PrefecturePrefecture
JapanCountry

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Latitude & Longitude (WGS84):
33° 42' North , 133° 48' East
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Aki20,117 (2017)24.1km
Kochi335,570 (2017)29.8km
Ikedachō15,895 (2017)36.5km
Ino24,123 (2017)37.8km
Kawanoechō37,641 (2017)40.7km
Mindat Locality ID:
262253
Long-form identifier:
mindat:1:2:262253:1
GUID (UUID V4):
0


Pallasite, main group [PMG-an]
Fall, 1 Feb 1898; 330 g

After the appearance of a fireball, a small mass was found. With its predominant components of Fe-Ni metal and olivine, Zaisho has been classified as a main group Pallasite and is one of only 4 witnessed falls as of late 2014. Zaisho is classified as an anomalous member of the Main Group of Pallasites. The nickel content of the Fe-Ni metal (Ni 10.75%) is unexceptional, but the olivine's rather high fayalite content (18 mol%) is closer to those of the Eagle Station Pallasite grouplet. Zaisho's unrounded Olivine also contains unusually high amounts of phosphorus and is sometimes 'kinked.' Minor amounts of troilite, schreibersite, chromite, stanfieldite, and farringtonite are also present. Zaisho also has small amounts of pyroxene. Pyroxene is usually absent in Pallasites, but in recent year has been detected in several Pallasites - usually in small quantities.

While oxygen isotopes, Ni-content of metal, olivine compositions, and other indicators all suggest that the Main Group Pallasites and the Eagle Station Pallasites are derived from a minimum of two separate original parent bodies (OPB). However, the implications of the oddballs and various main group outliers is not presently clear.

The main mass is in possession of S. Goto, Tokyo.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


5 valid minerals.

Meteorite/Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Entries shown in red are rocks recorded for this region.

Detailed Mineral List:

ⓘ Chromite
Formula: Fe2+Cr3+2O4
ⓘ Farringtonite
Formula: Mg3(PO4)2
ⓘ 'Fayalite-Forsterite Series'
ⓘ 'Meteoritic Iron'
ⓘ 'Pyroxene Group'
Formula: ADSi2O6
Description: Pyroxene in symplectic intergrowths around olivine
ⓘ Schreibersite
Formula: (Fe,Ni)3P
ⓘ Stanfieldite
Formula: Ca4Mg5(PO4)6
ⓘ Troilite
Formula: FeS

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘSchreibersite1.BD.05(Fe,Ni)3P
Group 2 - Sulphides and Sulfosalts
ⓘTroilite2.CC.10FeS
Group 4 - Oxides and Hydroxides
ⓘChromite4.BB.05Fe2+Cr3+2O4
Group 8 - Phosphates, Arsenates and Vanadates
ⓘFarringtonite8.AB.05Mg3(PO4)2
ⓘStanfieldite8.AC.70Ca4Mg5(PO4)6
Unclassified
ⓘ'Fayalite-Forsterite Series'-
ⓘ'Pyroxene Group'-ADSi2O6
ⓘ'Meteoritic Iron'-

List of minerals for each chemical element

OOxygen
Oⓘ ChromiteFe2+Cr23+O4
Oⓘ FarringtoniteMg3(PO4)2
Oⓘ StanfielditeCa4Mg5(PO4)6
Oⓘ Fayalite-Forsterite Series
Oⓘ Pyroxene GroupADSi2O6
MgMagnesium
Mgⓘ FarringtoniteMg3(PO4)2
Mgⓘ StanfielditeCa4Mg5(PO4)6
Mgⓘ Fayalite-Forsterite Series
SiSilicon
Siⓘ Fayalite-Forsterite Series
Siⓘ Pyroxene GroupADSi2O6
PPhosphorus
Pⓘ FarringtoniteMg3(PO4)2
Pⓘ Schreibersite(Fe,Ni)3P
Pⓘ StanfielditeCa4Mg5(PO4)6
SSulfur
Sⓘ TroiliteFeS
CaCalcium
Caⓘ StanfielditeCa4Mg5(PO4)6
CrChromium
Crⓘ ChromiteFe2+Cr23+O4
FeIron
Feⓘ ChromiteFe2+Cr23+O4
Feⓘ Schreibersite(Fe,Ni)3P
Feⓘ TroiliteFeS
Feⓘ Fayalite-Forsterite Series
NiNickel
Niⓘ Schreibersite(Fe,Ni)3P

Other Regions, Features and Areas containing this locality

Amur PlateTectonic Plate
AsiaContinent
Eurasian Plate
Japan

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

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