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. It was purchased from anonymous finders in a marketplace in Erfoud, Morocco in April 2012. The original find was composed of 35 fragments with a combined weight of approximately 345 grams (12.2 oz), however many additional fragments with a total weight of over 1,100 grams (39 oz) were subsequently recovered.
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| - NWA 7325 (de)
- NWA 7325 (fr)
- NWA 7325 (ja)
- Northwest Africa 7325 (en)
- Northwest Africa 7325 (pl)
- NWA 7325 (zh)
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| - NWA 7325 (offizieller Name Northwest Africa 7325) ist ein ungewöhnlicher achondritischer Steinmeteorit, der im Februar 2012 in der marokkanischen Sahara in 35 Stücke zerbrochen gefunden wurde. Er hat eine Gesamtmasse von 345 Gramm und stammt möglicherweise vom Merkur. (de)
- NWA 7325 (Northwest Africa 7325) est une météorite acquise en avril 2012 dans un marché d'Erfoud, au Maroc. Elle est constituée de 35 fragments d'une masse totale d'environ 345 grammes (s) et est reconnue pour sa croûte de fusion verte ainsi que pour son haut taux de magnésium et son bas taux de fer. On estime son âge à environ 4,56 milliards d'années. Elle serait possiblement la première météorite provenant de Mercure, ayant été éjectée par un impact sur cette dernière et étant retombée par la suite sur Terre. (fr)
- NWA 7325 (Northwest Africa 7325) とは、エイコンドライトに属する石質隕石の1つである。史上初の、水星起源の隕石である可能性が示されている。 (ja)
- Northwest Africa 7325 (NWA 7325) − achondryt (meteoryt kamienny) niewiadomego pochodzenia odnaleziony w 2012 w Afryce Północnej. Łączna masa odnalezionych fragmentów meteorytu wynosi 345 gramów. Meteoryt ma nietypową zielonkawą skorupę i nietypowy skład chemiczny – nie zawiera on prawie w ogóle żelaza, co może sugerować, iż pochodzi on z Merkurego. Jeżeli pochodzenie meteorytu zostanie potwierdzone, stanie się on pierwszym tego typu obiektem powstałym na Merkurym, który został odkryty na Ziemi. (pl)
- 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月在摩洛哥的市場被購得。該隕石總共有35個碎塊，總重量約345公克。華盛頓大學的安東尼·歐文（Anthony Irving）在比對了隕石成分和信使号觀測資料後，判定該顆隕石來自水星。不過歐文也提醒NWA 7325也有可能是來自體積更小的類似水星的天體，另一個可能的解釋是NWA 7325也許是原始無球粒隕石。NWA 7325最讓人注意的就是它的綠色熔殼（Fusion crust）和高含鎂/低含鐵的組成。NWA 7325的年齡約為45.6億年，可能是因為撞擊事件使NWA 7325離開水星表面後進入與地球相交的軌道，最後落到地球。 (zh)
- 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. It was purchased from anonymous finders in a marketplace in Erfoud, Morocco in April 2012. The original find was composed of 35 fragments with a combined weight of approximately 345 grams (12.2 oz), however many additional fragments with a total weight of over 1,100 grams (39 oz) were subsequently recovered. (en)
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| - Northwest Africa 7325 (en)
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| - A slice of Northwest Africa 7325 with green chromium diopside crystals. Photograph courtesy of Stefan Ralew for the Jared Collins Collection. (en)
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| - NWA 7325 (offizieller Name Northwest Africa 7325) ist ein ungewöhnlicher achondritischer Steinmeteorit, der im Februar 2012 in der marokkanischen Sahara in 35 Stücke zerbrochen gefunden wurde. Er hat eine Gesamtmasse von 345 Gramm und stammt möglicherweise vom Merkur. (de)
- 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. It was purchased from anonymous finders in a marketplace in Erfoud, Morocco in April 2012. The original find was composed of 35 fragments with a combined weight of approximately 345 grams (12.2 oz), however many additional fragments with a total weight of over 1,100 grams (39 oz) were subsequently recovered. Investigation of the meteorite by Dr. Anthony Irving at the University of Washington determined that the meteorite's composition might be consistent with that of Mercury as determined by the MESSENGER spacecraft. Irving cautioned, however, that NWA 7325 could also have come from a smaller differentiated planetesimal. Dr. Irving had previously claimed that a different class of basaltic meteorites, angrites might be from Mercury. Later studies cast doubt upon the meteorite's association with Mercury by comparing FTIR spectra obtained from the meteorite to astronomical results of the planet's surface; the observed differences suggest that the meteorite is not from Mercury. Additionally, NWA 7325's relatively early crystallization age suggests that it formed on a small body that cooled rapidly after accreting. Mercury is far larger and any samples from the planet's surface would likely be ~108 years younger. (en)
- NWA 7325 (Northwest Africa 7325) est une météorite acquise en avril 2012 dans un marché d'Erfoud, au Maroc. Elle est constituée de 35 fragments d'une masse totale d'environ 345 grammes (s) et est reconnue pour sa croûte de fusion verte ainsi que pour son haut taux de magnésium et son bas taux de fer. On estime son âge à environ 4,56 milliards d'années. Elle serait possiblement la première météorite provenant de Mercure, ayant été éjectée par un impact sur cette dernière et étant retombée par la suite sur Terre. (fr)
- NWA 7325 (Northwest Africa 7325) とは、エイコンドライトに属する石質隕石の1つである。史上初の、水星起源の隕石である可能性が示されている。 (ja)
- Northwest Africa 7325 (NWA 7325) − achondryt (meteoryt kamienny) niewiadomego pochodzenia odnaleziony w 2012 w Afryce Północnej. Łączna masa odnalezionych fragmentów meteorytu wynosi 345 gramów. Meteoryt ma nietypową zielonkawą skorupę i nietypowy skład chemiczny – nie zawiera on prawie w ogóle żelaza, co może sugerować, iż pochodzi on z Merkurego. Jeżeli pochodzenie meteorytu zostanie potwierdzone, stanie się on pierwszym tego typu obiektem powstałym na Merkurym, który został odkryty na Ziemi. (pl)
- 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月在摩洛哥的市場被購得。該隕石總共有35個碎塊，總重量約345公克。華盛頓大學的安東尼·歐文（Anthony Irving）在比對了隕石成分和信使号觀測資料後，判定該顆隕石來自水星。不過歐文也提醒NWA 7325也有可能是來自體積更小的類似水星的天體，另一個可能的解釋是NWA 7325也許是原始無球粒隕石。NWA 7325最讓人注意的就是它的綠色熔殼（Fusion crust）和高含鎂/低含鐵的組成。NWA 7325的年齡約為45.6億年，可能是因為撞擊事件使NWA 7325離開水星表面後進入與地球相交的軌道，最後落到地球。 (zh)
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