Meteorite Gyarub Zangbo 267g – China
Type: Pallasite
Locality: China
Weight: 267g
Dimensions: 14,5 x 16,3 x 4 mm
Year found: 2020
Total known weight: 17,61 kg
Surface treatment: cut, polished slice
Note: The slice is encased in resin for better stability and protection
| Category: | Gyarub Zangbo |
|---|---|
| By name: | Gyarub Zangbo |
| ? Type: | Stony-iron |
| ? Surface treatment: | Cut |
| Packaging: | None |
Free gift
For order over 20 $
Shipping within 2 working days
Gyarub Zangbo Meteorite
The Gyarub Zangbo meteorite is a pallasite discovered in October 2020 by Mr. G. Tulga during an exploration of the uninhabited area of the Qinghai-Tibetan Plateau, northeast of the Gyarub Zangbo River in Tibet, China. Several scattered fragments composed of olivine and metal were found, as well as a larger metal-rich specimen nearby. The total mass of the recovered material was approximately 17.6 kg.
Pallasites are rare stony-iron meteorites composed mainly of olivine and iron-nickel metal. They are believed to have formed at the core-mantle boundary of planetesimals, making them valuable objects for studying processes of early planetary differentiation.
Composition
Analyses showed that the olivine in the Gyarub Zangbo meteorite is homogeneous with a fayalite content. The metallic component contains approximately 15.8% nickel and trace amounts of other elements such as cobalt, copper, and germanium. The oxygen and chromium isotope composition indicates that this meteorite is closely related to carbonaceous chondrites, making it an anomalous carbonaceous pallasite.
Pallasite meteorites are very rare. Only about 200 specimens are known, representing less than 0.2% of all classified meteorites. Their unique composition and structure provide valuable insights into processes occurring during the formation of planetesimals and the differentiation of planetary bodies.