2025年3月3日 · Northwest Africa 2977. Morocco or Algeria. Find: 2005 November. Achondrite (lunar, gabbro) History: A single minimally weathered fusion-encrusted stone of 233 g was purchased from a Moroccan dealer in Tagounite, Morocco, by MFarmer in November 2005.

2010年12月22日 · Abstract– Northwest Africa (NWA) 2977 is an olivine-gabbro lunar meteorite that has a distinctly different petrographic texture from other lunar basalts. We studied this rock with a series of in situ analytical methods. NWA 2977 consists mainly of olivine and pyroxene with minor plagioclase.

2021年12月1日 · The NWA 773 clan of lunar meteorites, which consists of several stones (NWA 773, NWA 2727, NWA 2977, NWA 6950, etc.), is a coarse-grained regolith breccia with VLT basaltic composition, that includes a diversity of lithologies, …

2023年2月10日 · In this paper, we report on an in-situ U–Pb isotopic analysis of phosphate grains in lunar meteorite Northwest Africa 2977 (hereafter, NWA 2977) that was found in Morocco or Algeria in 2005.

2006年1月1日 · NWA 2977, an olivine gabbro interpreted as a shallow cumulate, consists mainly of olivine and pyroxene with only about 10% plagioclase Bunch et al., 2006] with a relatively high density of 3410...

NWA 2977 is a lunar gabbro meteorite that contains two pyroxenes, olivine, plagioclase shocked to maskelynite, K, Ba feldspar, and various Cr, Fe, Ti oxides. This cumulate lunar rock (cumulate = accumulation of crystals by gravity settling in a magma) probably originated in the lunar highlands environment as a thick lava flow or as a shallow ...

Northwest Africa (NWA) 2977 is an olivine-gabbro lunar meteorite that has a distinctly different petrographic texture from other lunar basalts. We studied this rock with a series of in situ analytical methods. NWA 2977 consists mainly of olivine and pyroxene with minor plagioclase.

NWA 2977 is a lunar gabbro meteorite that contains two pyroxenes, olivine, plagioclase shocked to maskelynite, K, Ba feldspar, and various Cr, Fe, Ti oxides. This cumulate lunar rock (cumulate = accumulation of crystals by gravity settling in a magma) probably originated in the lunar highlands environment as a thick lava flow or as a shallow ...

Northwest Africa (NWA) 2977 is a lunar basaltic meteorite that was found in 2005 and has been classified as an olivine cumulate gabbro. This meteorite contains a shock melt vein (SMV) induced by an intense shock event. We report herein on an in-situ analysis of phosphates in the host gabbro a …

2009年1月1日 · Sm-Nd and Rb-Sr Ages for Northwest Africa 2977, A Young Lunar Gabbro from the PKT Northwest Africa (NWA) 2977 is an olivine gabbro cumulate equivalent to one of the lithologies in lunar mare breccia NWA 773 [1,2,3]. The Ar-39-Ar-40 age is 2.77+/-0.04 Ga based on the last approx.57% of the gas release [4], similar to results for NWA 773 [5].