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

Diogenites

 

The achondrites of this group are named for a Greek philosopher of the fifth century B.C., Diogenes of Apollonia. He was the first to suggest that meteorites actually have their origin in outer space, a fundamental realization that was subsequently forgotten for the next two thousand years. The diogenites are as rare as an ingenious spirit, and this group consists only of about 40 members if we exclude all probable pairings, especially those that have been found in the ice fields of Antarctica.

Mineralogically, the diogenites are composed primarily of magnesium-rich orthopyroxene, with only minor amounts of olivine and plagioclase. The pyroxenes are usually coarse-grained, suggesting a cumulate origin for the diogenites in magma chambers within the deeper regions of Vesta's crust. They are intrusive igneous rocks similar to plutonic rocks found on Earth, and they experienced much lower cooling rates than did the eucrites, which allowed the pyroxene to form sizeable crystals. This is especially true for Tatahouine, a unique diogenite that fell in Tunesia in 1931. This meteorite is renowned for its green, centimeter-sized pyroxene crystals. Other diogenites are monomict breccias, e.g. Bilanga, a recent fall from Burkina Faso, Johnstown, a famous fall from Colorado, USA, and Hamara, a most beautiful breccia from Morocco recovered by our own team in April 2000. More recently, our team has recovered another diogenite from Morocco, currently under publication, that is a polymict fragmental breccia containing less than 10% eucritic clasts. This analysis suggests that we have discovered the first polymict diogenite - a true scientific sensation. 

Olivine Bearing Diogenite
(Jambon, Jussieu University 2003)

Provisional name LMT042

Find in 2001 in Occidental Sahara

TKW : 184 gr

 

Main mass of our Olivine Diogenite

Olivine diogenite1

2.7 x 1.1 x 0.15 cm

1.258 gr

 nice slice

Price: $ 370 

 

Olivine diogenite2

1.7 x 1.4 x 0.7  cm

5.52 gr

endcut piece with crust

price: $ 1600

Olivine diogenite3

1.7 x 1.7 x 0.6 cm

3.8 gr

endcut piece with crust    

Price: $1100

 

 

Olivine diogenite4

4.5 x 2.8 x 0.15 cm

5.16 gr

 slice

price: $1540

Olivine diogenite5

30 x 17 x 2 mm

2.2 gr

 slice

price: $ 650

 

Olivine diogenite6

2.4 x 1.5 x 0.2 cm

2.48 gr

 slice

price: $740

Olivine diogenite7

2.3 x 1.7 x 0.15 cm

1.85 gr

Slice

price: $ 550

 

Olivine diogenite8

1.6 x 1.7 x 0. 15 cm

1.16 gr

Slice

price: $340 

 

Olivine diogenite9

1.6 x 1.7 x 0.10 cm

0.83 gr

Slice

price: SOLD

 

Olivine diogenite10

1.6 x 1.5 x 0.15 cm

0.868 gr

Slice

price: $260 

 

Olivine diogenite11

1.5 x 1 x 0.15 cm

0.722 gr

Slice

price: $ 215 SOLD

 

Olivine diogenite12

1.4 x 1 x 0.10 cm

0.692 gr

Slice

price: $207 

 

Olivine diogenite13

2.8 x 1 x 0.10 cm

1.136 gr

Slice

price: $ 340

 

 

 

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