Chondrites
Metachondrites
Primitive Achondrites
Stony-Irons
Irons
Miscellaneous

ACHONDRITES

•ANGRITES

QUENCHED:

1. Primitive Melts:

2. Evolved Melts:

INTERMEDIATE

PLUTONIC:

•ENSTATITE
ACHONDRITES

AUBRITES
(ε54Cr = 0.06)

E ACHONDRITES
(ε54Cr = –0.12)

E ACHONDRITES
(ε54Cr = –0.26)

•VESTAN SUITE

HOWARDITES:

1. Fragmental Breccia:

2. Regolith Breccia:

EUCRITES:

1. Monomict:

A. Cumulate:

B. Noncumulate:

i. Main Group–Nuevo Laredo Trend:

ii. Stannern Trend:

iii. Restite:

iv. Partial Melt:

2. Polymict:

DIOGENITES (IUGS)

1. Orthopyroxenite:

3. Harzburgite:

4. Dunite:

5. Norite:

6. Anorthosite:

7. Polymict:

•MARTIAN SUITE

SHERGOTTITES:

1. Aphyric:

2. Porphyritic:

3. Poikilitic:

NAKHLITES:

1. Clinopyroxenite:

2. Dunite:

POLYMICT REGOLITH BRECCIA:

•LUNAR SUITE

FELDSPATHIC:

1. Regolith Breccia:

2. Fragmental Breccia:

3. Impact-Melt Breccia:

4. Granulitic Breccia:

5. Anorthosite:

MAFIC, Th-RICH, IMB:

MINGLED BRECCIAS:

1. Predominantly Feldspathic:

2. Predominantly Basaltic:

    'NWA 773 Clan'

MARE BASALTS:

•UNGROUPED
ACHONDRITES

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© 1997–2025 by David Weir