Diogenite NWA 18185

Achondrite: A rocky meteorite lacking chondrules that originated from a differentiated parent body.

Most of the achondrites are believed to come from the asteroid Vesta, located in the asteroid belt. This asteroid has a crust made up of silicates and a core made up of Fe and Ni, that is, it has undergone magmatic differentiation, and it has an impact crater that occupies a large surface of the asteroid. This meteorite impact generated a large amount of ejecta (the material projected in the formation of a crater), and some of it has fallen on our planet.​

• Classification: molten diogenite breccia.
• Total mass: 460 grams.
• Number of pieces: recovered divided into 3 pieces.
• The dominant mineral in diogenites is orthopyroxene.

Diogenites are closely related to two other groups of achondrites: eucrites and howardites; The three groups are collectively known as HED meteorites (asteroidal achondrites) which come from the crust of asteroid 4 Vesta.

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