2025年4月10日 · Name: Northwest Africa 4801 This is an OFFICIAL meteorite name. Abbreviation: NWA 4801 Observed fall: No Year found: 2007 Country: Morocco Mass: 252 g …

2021年3月3日 · The trace element characteristics of NWA 4801 show similarities to both the coarse- and fine-grained angrites. It is possible that NWA 4801 originated from a distinct …

Noble gases in the five angrites Northwest Africa (NWA) 1296, 2999, 4590, 4801, and 4931 were analyzed with total melting and stepwise heating methods. The noble gases consist of in situ …

2012年11月1日 · The least contaminated quenched-angrites and NWA 4590 overlap data fields of lunar, martian, and terrestrial basalts. However, NWA 4801 contains elevated HSE …

2015年12月15日 · The recent identification of several new angrites, specifically Northwest Africa (NWA) 4590, NWA 4801, and NWA 2999, has more than doubled the number of coarse …

Introduction: The discovery of angrite NWA 4801 brings the total number of these enigmatic achon-drites to 12, of which 6 have been found in the deserts of northwest Africa since 1999. …

Northwest Africa (NWA) 4590 and NWA 4801 are two recently recovered coarse-grained an-grites comprised primarily of Al, Ti-diopside, pure anorthite, olivine (with kirschteinite present in NWA …

Noble Gases in Angrites NWA 2999/4931, NWA 4590 and NWA 4801: Exposure Ages and Evidence of Fissiogenic Xe

2008年10月31日 · We found that the angrites Northwest Africa (NWA) 2999 and NWA 4801 have been substantially remagnetized by collectors' hand magnets (as indicated by communication …

2018年11月8日 · An analysis was conducted at the University of Washington in Seattle (A. Irving and S. Kuehner), and it was ascertained that NWA 4801 is a plutonic igneous cumulate …