地球上已知最大的火星陨石将在纽约拍卖
仅事实

地球上已知最大的火星陨石将在纽约拍卖

摘要

苏富比将拍卖迄今为止在地球上发现的最大火星陨石,同时拍卖一具幼年恐龙骨架,火星陨石预计拍卖价高达400万美元。

一块重达54磅的火星陨石,被苏富比描述为迄今为止在地球上发现的最大火星陨石,将于周三在纽约拍卖。这块标本名为NWA 16788,预计拍卖价格在200万至400万美元之间,作为一场以自然历史为主题的拍卖的一部分,拍卖还包括一具幼年角鼻龙恐龙骨架。

据苏富比介绍,这块陨石被认为是由小行星撞击火星后喷射出来的,经过约1.4亿英里的旅程后降落在撒哈拉沙漠。它于2023年11月由一名陨石猎人在尼日尔发现。该岩石尺寸约为15英寸×11英寸×6英寸,体积比已知的第二大火星陨石大约70%,占所有在地球上发现的火星物质的近7%。

苏富比科学与自然历史副主席卡桑德拉·哈顿表示:“这块火星陨石是我们迄今为止发现的最大火星岩石,远远超过我们之前认为的最大火星陨石的两倍以上。”

经过实验室分析确认,这块陨石的化学成分与1976年维京号探测器识别的样本相匹配,证实其火星起源。苏富比报告称,该陨石属于橄榄石-微辉长岩型舍戈泰陨石,是一种由缓慢冷却的岩浆形成的罕见火星岩石,表面因穿越地球大气层时形成了玻璃质感。在地球上官方认可的7.7万多块陨石中,火星陨石约有400块。

该陨石此前曾在罗马的意大利航天局展出,但苏富比未透露当前所有者。检测显示它是在近年抵达地球的。

拍卖中还包括一具幼年角鼻龙(Ceratosaurus nasicornis)骨架,该骨架于1996年在怀俄明州发现,预计拍卖价在400万至600万美元之间。该骨架来自晚侏罗纪时期,由近140块化石骨骼和额外雕塑材料组装而成。此次拍卖是苏富比2025年极客周的一部分,展出122件拍品,包括陨石、化石和矿物。

来源

Yahoo

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A 54-pound Martian meteorite, described by Sotheby's as the largest piece of Mars ever discovered on Earth, is set to be auctioned in New York on Wednesday.

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The specimen, known as NWA 16788, is estimated to sell for between $2 million and $4 million as part of a natural history-themed sale that also features a juvenile Ceratosaurus dinosaur skeleton.

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According to Sotheby's, the meteorite is believed to have been ejected from Mars by an asteroid impact, traveling approximately 140 million miles before landing in the Sahara Desert.

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It was discovered in Niger by a meteorite hunter in November 2023.

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The rock measures nearly 15 inches by 11 inches by 6 inches and is about 70% larger than the next largest known Martian meteorite, representing nearly 7% of all Martian material found on Earth.

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The meteorite was confirmed to be of Martian origin after a laboratory analysis matched its chemical composition to samples identified by the Viking space probe in 1976.

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Sotheby's reports that it is an olivine-microgabbroic shergottite, a rare type of Martian rock formed from slowly cooled magma, and features a glassy surface from its entry through Earth's atmosphere.

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Only about 400 Martian meteorites are among the more than 77, ... on Earth.

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