Lunar Meteorite: Northwest Africa 14704 & 14705
paired stones?
| from The Meteoritical Bulletin, No. 111 Northwest Africa 14704 (NWA 14704)Morocco Lunar meteorite (feldspathic breccia) History: Purchased by Kaiping Wang from a Moroccan dealer at the China Mineral and Gem show in Beijing in November, 2021. Physical Characteristics: A single stone. Nearly half the surface is covered with black fusion crust. The exposed interior shows a light to dark gray breccia in a dark matrix. Petrography: (H. Chen, L. Xie, Z. Xia, GUT): It exhibits a breccia texture which is composed of many kinds of clasts set in a fine-grained matrix. Fragmental breccia mainly includes mineral fragments, and impact melt clasts. Most abundant minerals are calcic plagioclase, olivine. Minor phases include ilmenite, chromite troilite and FeNi. The matrix is dominated by glass, as well as few very-fine particles (<10 µm). Geochemistry: (L. Xie, GUT): Plagioclase: An94.1-97.6Or0-0.21 (n=11); Olivine: Fo66.2-82.9, Fe/Mn=68-102 (n=20); Low-Ca pyroxene: Fs15.0-36.6Wo2.3-11.1, Fe/Mn=45-53 (n=10); High-Ca pyroxene: Fs9.8-31.0Wo36.9-45.5, Fe/Mn=32-59 (n=10). Classification: Lunar (feldspathic breccia. Specimens: A polished thin section and about 20 g sample are in deposit at GUT. The owner Kaiping Wang holds the main mass. |
| from The Meteoritical Bulletin, No. 111 Northwest Africa 14705 (NWA 14705)Morocco Lunar meteorite (feldspathic breccia) History: Purchased by Ziyao Wang from a Moroccan dealer at the China International Mineral and Gem show in Beijing in November 2019. Physical Characteristics: The single stone is dark brown in color. There are some black patches of fusion crust on the surface, and some rust and white specks are visible. The interior is a fine-grained black matrix. Petrography: (H. Chen, L. Xie, Z. Xia, GUT): It shows typical breccia structure and large-area melt. Fragmental breccia mainly composed of mineral fragments, and impact melt clasts set in a fine-grained partly shock-melted groundmass. The main minerals are calcic plagioclase, olivine and pyroxene. Minor phases include ilmenite and FeS. The matrix is dominated by very-fine particles and glass (<10 µm). The chemical composition of the glass is similar to that of anorthite. Geochemistry: (L. Xie and H. Chen, GUT): Plagioclase: An95.7-97.2Or0-0.26 (n=12); Olivine: Fo63.7-68.3, Fe/Mn=75-95 (n=14); Pigeonite: Fs25.2-26.4Wo7.5-8.8, Fe/Mn=54-65 (n=10); High-Ca pyroxene: Fs16.6-25.2Wo26.7-42.2, Fe/Mn=39-54 (n=8). Classification: Lunar (feldspathic breccia) Specimens: A total of 20 g of sample and one polished mount are on deposit at GUT. The owner Ziyao Wang holds the main mass. |
| Randy Says… I have not studied Northwest Africa 14704 and 14705. These meteorites may not be paired, but there are similarities in the descriptions. |