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— Group —
Meteor Stonařov u Jihlavy.jpg
Stannern eucrite, found in the Czech Republic.
Compositional typeStony
ClassAsteroidal achondrite
ClanHED meteorite
  • Non-cumulate eucrites
    • Main series eucrites
    • Stannern trend eucrites
    • Nuevo Laredo trend eucrites
  • Cumulate eucrites
  • Polymict eucrites
Parent body4 Vesta and others
CompositionBasaltic rock, mostly Calcium-poor pyroxene, pigeonite, and Calcium-rich plagioclase (anorthite)
Total known specimens>100
Eucrite GRA98033.jpg
GRA98033 a brecciated eucrite about 5 cm across, found in the Graves Nunataks region of Antarctica.

Eucrites are achondritic stony meteorites, many of which originate from the surface of the asteroid 4 Vesta and are part of the HED meteorite clan. They are the most common achondrite group with over 100 meteorites found.

Eucrites consist of basaltic rock from the crust of 4 Vesta or a similar parent body. They are mostly composed of calcium-poor pyroxene, pigeonite, and calcium-rich plagioclase (anorthite).[1]

Based on differences of chemical composition and features of the component crystals, they are subdivided into several groups:[2]


Eucrites get their name from the Greek word eukritos meaning "easily distinguished". This refers to the silicate minerals in them, which can be easily distinguished because of their relatively large grain size.

Eucrite is also a now obsolete term for bytownite-gabbro, an igneous rock formed in the Earth's crust. The term was used as a rock type name for some of the Paleogene igneous rocks of Scotland.[3]

See also


  1. ^ B. Mason: Meteorites. John Wiley, New York 1962.
  2. ^ Mittlefehldt, McCoy, Goodrich and Kracher: Non-chondritic Meteorites from Asteroidal Bodies, In: Reviews in Mineralogy Vol. 36, Planetary Materials, Mineralogical Society of America, 1998.
  3. ^ Sutherland, D. S. (1982) Igneous Rocks of the British Isles, Chichester, John Wiley, page 536.