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Martian Meteorites | Lunar Rocks | HED Group | PAC Group | Carbonaceous Chondrites | Rare Chondrites Last Updated: March 2023

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.

 

 

NWA 1068 - Louise Michel

Found : April 2001, Morocco
TKW : 654 g
 Type : picritic shergottite

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.

Nwa 1068 02

7.898 gr

Nice endcut for this SNC !

price on request

 

Nwa 1068 03

3.456 gr

Very nice rectangular piece of the Red planet !

SOLD.

 

Nwa 1068 04

1.272 gr

Rectangular specimen showing olivines !

SOLD

 

Nwa 1068 05

0.854 gr

A square thick slice with a nice polished finition

SOLD

 

Nwa 1068 06

0.248 gr

A tiny square slice of martian meteorite !

SOLD

 

Nwa 1068 07

0.498 gr

A tiny  endcut !

SOLD

 

Nwa 1068 08

0.478 gr

A nice and thin slice showing a shock vein

SOLD

 

Nwa 1068 09

0.292 gr

Nice and thick slice

SOLD

 

Nwa 1068 10

0.370 gr

Nice and extremely thin slice, less than a millimeter thick !

SOLD

 

Nwa 1068 11

0.686 gr

Nice and thin slice with an outside part !

SOLD

 

Nwa 1068 12

0.850 gr

Nice and  thin slice of shergottite

SOLD

 

 

 

 

Chondrites for Sale :
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   > CH Group (High-Metal Type)
   > CB Group (Bencubbinites)
   > CI1 Group (Ivuna Type)
>Ordinary chondrite
 
>H Group
   >L Group
   >LL Group

> Rare Chondrites
   > E Group (Enstatite Type)
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   > Impact Melt Breccia IMB
> Oriented Chondrites
Achondrites for Sale :
> Martian Meteorites - SNC
   > Chassignite
   > Shergottites
   > Nakhlites
   > Lherzolite
> Lunar Meteorites - LUN
   > Lunar Mare Basalts
   > Lunar Anorthositic Breccias
> Vesta Meteorites - HED
   > Howardites
   > Eucrites
   > Diogenites
> Primitive Achondrites 
   > Lodranite
   > Ureilites
   > Acapulcoites
   > Ungrouped
> Other rares Achondrites
   > Angrites
   > Aubrites
tektites and impact glass:
> Spinning Tektites
> Lybian Glass
> Moldavite/carved moldavite
> Moldavite pendant

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