Nr. 100167476
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En smuk skive af Månen NWA 17700 månemeteoritt (troctolite smeltes breccia) - 8.33 g - (1)
Northwest Africa 17700 (NWA 17700)
(Northwest Africa)
Purchased: 2025 Apr
Classification: Lunar meteorite (troctolite melt breccia)
History: The meteorite was purchased from a dealer in Temara, Morocco.
Physical characteristics: Many grayish rocks some with minor fusion crust.
Petrography: Melt breccia predominantly composed of up to 4 mm sized anorthosite and melt clasts plus up to 0.8 mm sized olivine aggregates and fewer Ca-rich pyroxene grains set in abundant plagioclase-rich melt rock matrix. The matrix is partly glassy, partly recrystallized to small often lath-shaped plagioclase crystals. Olivine aggregates mostly consist of numerous smaller subgrains. Accessories include ilmenite, chromite, and troilite. No metal detected.
Geochemistry: olivine: Fa25.2±0.6 (Fa24.2-25.8, FeO/MnO=82±9; n=8); Ca-pyroxene: Fs22.8±1.1Wo11.6±3.0 (Fs21.7-24.2Wo9.2-18.0, FeO/MnO=48±4, n=7); calcic plagioclase: An96.3±0.3 (An95.8-96.7, n=7)
Nr. 100167476
Solgt
En smuk skive af Månen NWA 17700 månemeteoritt (troctolite smeltes breccia) - 8.33 g - (1)
Northwest Africa 17700 (NWA 17700)
(Northwest Africa)
Purchased: 2025 Apr
Classification: Lunar meteorite (troctolite melt breccia)
History: The meteorite was purchased from a dealer in Temara, Morocco.
Physical characteristics: Many grayish rocks some with minor fusion crust.
Petrography: Melt breccia predominantly composed of up to 4 mm sized anorthosite and melt clasts plus up to 0.8 mm sized olivine aggregates and fewer Ca-rich pyroxene grains set in abundant plagioclase-rich melt rock matrix. The matrix is partly glassy, partly recrystallized to small often lath-shaped plagioclase crystals. Olivine aggregates mostly consist of numerous smaller subgrains. Accessories include ilmenite, chromite, and troilite. No metal detected.
Geochemistry: olivine: Fa25.2±0.6 (Fa24.2-25.8, FeO/MnO=82±9; n=8); Ca-pyroxene: Fs22.8±1.1Wo11.6±3.0 (Fs21.7-24.2Wo9.2-18.0, FeO/MnO=48±4, n=7); calcic plagioclase: An96.3±0.3 (An95.8-96.7, n=7)
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