| Subdivision: | Group |
| Acapulcoite | |
| Alternative Names: | Acapulcoites, Acapulcoite group, Acapulcoite meteorites |
| Type: | Achondrite |
| Class: | Primitive achondrite |
| Structural Classification: | ? |
| Parent Body: | Unknown |
| Composition: | Olivine, orthopyroxene, plagioclase, meteoric iron, troilite |
| Number Of Specimens: | Fifty two |
Acapulcoites are a group of the primitive achondrite class of stony meteorites.
The acapulcoites are named after the only specimen of the group, with a witnessed fall. The Acapulco meteorite fell on 11 August 1976 at 11:00 near El Quemado Colony, outside Acapulco, Guerrero, Mexico. The stone was retrieved 15 minutes afterwards from a deep crater and was cool to the touch.[1] It had a mass of . Following that discovery, 52 meteorite specimens have been classified as acapulcoites.[2]
Acapulcoites are primarily composed of olivine, orthopyroxene, plagioclase, meteoric iron, and troilite.
Like all primitive achondrites, acapulcoites have chemical composition and mineralogical similarities with chondrites,[3] and some specimens even show relict chondrules. Their mineral composition lies between H and E chondrites.