Acapulcoite

Acapulcoite
— Group —
NWA 2989, an example of an acapulcoite meteorite
Type	Achondrite
Structural classification	?
Class	Primitive achondrite
Subgroups	None?
Parent body	Unknown
Composition	Olivine, orthopyroxene, plagioclase, meteoric iron, troilite
Total known specimens	Fifty two
Alternative names	Acapulcoites, Acapulcoite group, Acapulcoite meteorites

Acapulcoites are a group of the primitive achondrite class of stony meteorites.

The acapulcoites are named after the only specimen of the group that was a witnessed fall. The Acapulco meteorite fell on 11 August 1976 at 11:00 near El Quemado Colony (16°52′59″N 99°54′00″W / 16.883°N 99.9°W / 16.883; -99.9), outside Acapulco, Guerrero, Mexico. The stone was retrieved 15 minutes afterwards from a 30 centimetres (12 in) deep crater and was cool to the touch.¹ It had a mass of 1,914 grams (67.5 oz). Following that discovery, more than 90 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.³