Borzya 					Location 50°24.05’N, 116°33.08’E
Chitinskaya distrikt, Russia  
Find: May 2021
Pallasite (Main group)
History: The meteorite was found by anonymous person on a private field during plowing in the suburb of Borzya town 
(Zabaykalskiy kray, Russia) in May 2021.
Physical characteristics: A stone of 25.62 kg of total weight has elongated prismatic-like shape with lumpy surface 
formed by randomly distributed areas of metal and silicates. 
The surface have light-brown color and is covered by a thin layer of terrestrial weathering products. Fusion crust is absent.


Petrography: The meteorite is composed of rounded olivine crystals of 0.3 ? 1 cm in size surrounded by Fe,Ni metal. 
The olivine crystals at places are fractured. Olivine grains are mostly free of inclusions but some of them contain 
the oriented needles of finely intergrowing chromite and Ca-pyroxene. Occasionally the olivine grains are crossed by troilite veinlets. 
Metal is composed of zoned taenite up to 300 ? 50 ?m in size and plessite islands spaced by lamellas of low-Ni Fe,Ni phase (kamacite), 
up to 200 ? 1000 ?m in size oriented in octahedral directions. The shreibersite crystals are co-oriented with Fe,Ni phases. 
Metal contains accessory inclusions of troilite and chromite. Fe,Ni hydroxide decorates the contacts of metal and olivine. 
Accessory whitlockite tetrataenite and awaruite are occurred on the oxidized metal-olivine interfaces.


Geochemistry: Mineral compositions and geochemistry: Olivine is Fa12.0±0.1, Fe/Mn=34.4±3.3, CaO=0.07±0.02 wt.%; 
Cr2O3=0.07±0.02 wt.%; N=15; taenite 19-42 wt.% Ni, kamacite 3.7-7.0 wt% Ni; troilite 0.24±0.04 wt.% Cr (N=6).


Classification: Pallasite (Main group).