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Martian Meteorites | Lunar Rocks | HED Group | PAC Group | Carbonaceous Chondrites | Rare Chondrites Last Updated: 7 May 2018

Shergottites

The shergottites are named for their type specimen, an achondrite that fell in Shergotty, India, in 1865. Comprising 17 distinct members, they represent the most abundant type of Martian meteorite. Shergottites are igneous rocks of volcanic or plutonic origin, and they resemble terrestrial rocks more closely than do any other achondrite group. They all show exceptionally young crystallization ages of about 150 to 200 million years, and they usually exhibit signs of severe shock-metamorphism. Typically, the plagioclase in shergottites has been converted to maskelynite, a glass that is produced when plagioclase is subjected to shock pressures of at least 30 GPa. It is likely that the maskelynite was formed by the impact forces that blasted the shergottites from the Martian surface and into space. Calculations show that it requires a major impact event to accelerate any material to a speed high enough to escape the planet's gravity - one of the reasons why the SNC meteorites are such a rare class. Based upon their mineral compositions, the shergottites are further subdivided into two distinct subgroups: the basaltic subgroup, and the lherzolitic subgroup.

 

 Los Angeles Shergottite

found 1999 in California, USA

TKW 698 gr

Los Angeles 00

stunning thin slice with crust ! World record for augite size with 30 mm ! Museum class specimen......

8.43gr

          Price on request

Los Angeles 01

ultra thin slice (can see the light through the maskelynite...) contains melt pockets but very fragile.....

3.028gr

Hold T

Los Angeles 06

A lot of slices and fragments !!!

0.138gr

SOLD

Los Angeles 07

Wonderfull slice of LA !!!

5.790gr

Price on request

Los Angeles 08

Nice endcut with crust !!!

1.487gr

$ 2975

Los Angeles 09

Very nice endcut with crust ! 

1.121gr

SOLD

 

Chondrites for Sale :
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>Ordinary chondrite
 
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Achondrites for Sale :
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tektites and impact glass:
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