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STONY
METEORITES:
Stony meteorites fall into two main classes. The chondrites (so-called because they contain tiny spheres called chondrules
- look at NWA 4522 below for a really clear example) make up around 85%
of all metorites. These contain very primitive material, some of
which is as old as (or older than) the solar system itself.
About 7% of meteorites are achondrites
- they don't show chondrules at all. These are believed to have
formed on large parent bodies, and represent the crust or mantle of
asteroids broken free as a result of the parent body being struck by an
impacting object. The asteroid Vesta is believed to be the parent
for many achondrite meteorites. A handful, however, are formed in
the same
way but originate from the planet Mars or the Moon.
Martian
(and especially lunar) material is extremely rare.
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ZAGAMI
Fell 3rd October, 1962
Katsina Province, Nigeria
TKW 18kg
Sample:0.03g |
Martian
basaltic shergottite |
Nigeria
1962
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DAR AL GANI 400
Found 1998
Al Jufrah, Libya
TKW 1425g
Sample: 0.22g |
Lunar
anorthositic breccia |
Libya
1998
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TAFASSASSET
Found 14th February, 2000
Tenere Desert, Niger
TKW 144kg
Sample: 8.0g |
Anomalous CR carbonaceous chondrite, or primitive achondrite |
Niger
2000
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NWA 3348
Found 2000
Northwest Africa
TKW 654g
Sample: 32.2g |
L5 ordinary chondrite |
NWA
2000
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ADRAR CHIRIET
Found 2003
Agadez, Niger
TKW 926g
Sample:10.2g |
L6
ordinary chondrite |
Niger
2003
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DHOFAR 1290
Found 2004
Zufar, Oman
TKW 1211g
Sample: 22g |
LL4 ordinary chondrite |
Oman
2004
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DHOFAR 1180
Found 2005
Zufar, Oman
TKW 115.2g
Sample: 0.056g |
Lunar breccia |
Oman
2005
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NWA 3359
Found 2005
Northwest Africa
TKW 509g
Sample: 15.8g |
Polymict eucrite achondrite |
NWA
2005
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NWA 4473
Found 2006
Northwest Africa
TKW 32g
Sample: 4.6g |
Polymict brecciated diogenite achondrite |
NWA
2006
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NWA 4522
Found 2006
Northwest Africa
TKW 949g
Sample: 28.4g in total |
LL3.5
ordinary chondrite |
NWA
2006
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NWA 4558
Found 2006
Northwest Africa
TKW 900
Sample: 45.3g | L4
ordinary chondrite |
NWA
2006
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NWA 4680
Found 2006
Northwest Africa
TKW 3830g
Sample: 17.2g |
L4-6 ordinary chondrite |
NWA
2006
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