Yamato 691

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Yamato 691
Type Chondrite
Class Enstatite chondrite
Composition Pl(An32-75), En99.2Wo-0.3, tro., nini., oldh., perr., schr., metal(2.2-2.5%Ni, 0.16-0.22%Co)[1]
Country Antarctica
Region Queen Fabiola Mountains (Yamato Mountains)
Coordinates Lua error in package.lua at line 80: module 'strict' not found.[2]
Observed fall No
Fall date 4.5 billion years ago
Found date December 21, 1969
TKW 715 grams (1.576 lb)

The Yamato 691 (abbreviated Y-691) is the 4.5 billion year old chondrite meteorite discovered by members of the Japanese Antarctic Research Expedition[3] on the blue ice field of the Queen Fabiola Mountains (Yamato Mountains) in Antarctica, on December 21, 1969.[2]

History

Yamato 691 was one among 9 meteorite specimens identified by the Japanese Expedition Team in 1969. It was later studied at the Max Planck Institute for Chemistry, Mainz, Germany.[4]

On April 2011, NASA and co-researchers from the United States, South Korea and Japan have found a new mineral named "Wassonite" in Yamato 691.[5]

Composition and classification

This meteorite is a stony enstatite chondrite. Minerals reported from the meteorite include:[6]

See also

References

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External links

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  2. ↑ 2.0 2.1 Lua error in package.lua at line 80: module 'strict' not found.
  3. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  4. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  5. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  6. ↑ Lua error in package.lua at line 80: module 'strict' not found.
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