Northwest Africa 7325, also known as NWA 7325, is a unique igneous meteorite which crystallized as a basalt on a large asteroid or planetesimal approximately 4.56 billion years ago. It is classified as an ungrouped achondrite, and is notable for its green fusion crust and high-magnesium/low-iron composition.

2025年3月27日 · Northwest Africa 7325 (NWA 7325) (Northwest Africa) Purchased: 2012 Apr. Classification: Ungrouped achondrite. History: Purchased by Stefan Ralew in April 2012 from a dealer in Erfoud, Morocco. The material was found reportedly in southern Morocco in early 2012.

西北非7325（Northwest Africa 7325，縮寫：NWA 7325），被認為是地球上已知第一顆來自水星的隕石。該隕石於2012年4月在摩洛哥 厄夫 （ 英语 ： Erfoud ） 的市場被購得 [1] 。該隕石總共有35個碎塊，總重量約345公克 [2] 。

这项新研究显示，一块名为NWA 7325的太空岩石来自水星，并非来自一颗小行星或火星。 NWA 7325事实上是2012年在摩洛哥发现的35个陨石样本组。 它们很古老，经欧文和他的科研组的分析，时间可追溯到约45.6亿年前。 这可能是一个来自水星的样本，或许是一个来自比水星还小的天体的样本，但很可能是水星。 一次比较大的撞击可能使NWA 7325飞离水星，落到地球上。 NWA 7325陨石不同于以前在地球上发现的任何陨石样本。 火星陨石被渗透进一些火星大气，所以 …

2018年9月1日 · As part of a larger study of mineralogically and spectroscopically unique achondrites, we report here the results of a spectroscopic study of the unique achondrite Northwest Africa (NWA) 7325. NWA 7325 likely represents a sample of an ancient differentiated crust, of cumulate rather than residue origin (Barrat et al., 2015).

Northwest Africa 7325 has been described by the primary investigative team as a reduced, cumulate olivine microgabbro (typical grain size 0.5–1 mm), having petrographic characteristics that are distinct from all other known meteorites.

2013年5月3日 · Analysis suggests that the meteorite, called NWA 7325, came from Mercury, and not an asteroid or Mars. With its uncharacteristically chartreuse-green fusion crust and curious chemical composition, it does not resemble any other space rock documented by scientists.

The unique achondrite Northwest Africa (NWA) 7325, which has previously been suggested to represent the first sample from Mercury, was investigated by optical and electron microscopy, and infrared and Raman spectroscopy.

2015年11月1日 · The recent discovery of Northwest Africa 7325 (NWA 7325) and its pairing (NWA 8014 and 8486) was stimulating. Thirty-seven fragments totaling ca. 600 g, of an unusual achondrite displaying a distinctive green fusion crust ( Fig. 1 …

2013年11月26日 · (Phys.org) —Talk about a precious stone—the largest piece of the only known meteorite from the planet Mercury has found its way to Yale, where it is now on display at the Peabody Museum of Natural...