Lunar Meteorite: Northwest Africa 14727
| from The Meteoritical Bulletin, No. 111 Northwest Africa 14727 (NWA 14727)Western Sahara Lunar meteorite (feldspathic breccia) History: The stone was found near Bir Anzarane in Western Sahara. It was purchased by Stone Gallery (NL; https://www.stonegallery.nl/en/) from a dealer in Morocco. Physical Characteristics: The stone (~15.0 × 15.0 × 10.0 cm) has a rugged surface with cm-sized vugs, dusted by desert soil, and no visible fusion crust. A cut surface exposes a fresh-looking interior. This polymict breccia includes a light-gray matrix with numerous angular or more rounded white to light-gray lithic clasts. Petrography: (A. Bouvier, UBayr) The polished section consists of lithic clasts and mineral fragments within a clastic to glassy matrix with abundant small vesicles. Clasts are generally angular to more rounded in shape dominated by anorthositic lithologies, and mineral clasts of anorthite, olivine, low-Ca pyroxene with exsolution lamellae, and minor chromite and ilmenite. Geochemistry: Anorthositic clast: plagioclase An95.2±0.7 (n=8), olivine Fa51.3 (Fe/Mn=85, n=1). Matrix: olivine Fa45.3±5.2 (Fe/Mn= 91±11, n=17), one Fo-rich olivine Fa25.6 (Fe/Mn=101), low-Ca pyroxenes Fs27.3±8.0Wo5.2±2.9 (Fe/Mn=59±10, n=11) with exsolution lamellae of high-Ca pyroxene Fs23.6Wo40.6 (Fe/Mn=46, n=1), and Fs48.2±1.6Wo3.6±2.9 (Fe/Mn=57±8, n=4). Classification: Lunar (feldspathic breccia) Specimens: 46.84 g including a polished mount, 40.8 g slice and fragments, and 6.0 g saw dust at UBayr. Stone Gallery holds the main mass. |
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More InformationMeteoritical Bulletin Database NWA 14727 |