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Pallasites

Modern meteoriticists use the term "pallasite" to describe a certain structural class of stony-iron meteorites that contains abundant silicate inclusions in a nickel-iron matrix. Usually, the silicates are large olivine crystals, often of gem quality. These peridots make the pallasites some of the most attractive meteorites known, and cut and polished pallasite slices are highly coveted among meteorite collectors. Sometimes pallasites and pallasitic peridots are used in jewelry, making them the only genuine cosmic gemstones on Earth.

Based on their origin and formation history, the pallasites are regarded as samples of core/mantle boundary material from differentiated asteroids, inferring that a close relationship exists to the iron meteorites. Upon etching, larger metal portions of polished slices display typical Widmanstätten figures. In addition to this, pallasites display chemical, elemental, and isotopic trends that link them to specific chemical groups of iron meteorites, linking their origin to a common parent body. Hence, they are classified into three distinct groups or grouplets, similar to the chemical groups of the iron meteorites: (1) the main group pallasites, (2) the Eagle Station grouplet, and (3) the pyroxene grouplet.

Imilac
Found in
1822 in Chile

TKW 920 Kg

Main group pallasite

 

Imilac 00

Huge slice with crust !

212gr

 

Imilac 01

translucent slice with crust

27gr

750$

Imilac 02

slice with crust

36.27gr

$1000

Imilac 03

end cut with fresh exterior

36.87gr

$650

Imilac 04

perfect complete individual

27.41gr

$450

Imilac 05

individual with open window

20.50gr

$250

Imilac 06

perfect quality thin slice

6.87gr

$210

 

Imilac 07

perfect quality thin slice

9.7gr

$280

Imilac 08

perfect quality thin slice

10.37gr

$290

 

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