Description
Magnificent piece, beautiful texture, rare !
Delivered with certificate in a box.
29,72 $
Plateau du Tademait 008 est une météorite provenant de Mars, classifiée Shergottite (olivine-phyric basalt).
She was discovered in Algeria in 2022.
A rare and highly aesthetic meteorite.
Plateau du Tademait 008 28°55’03.8″N, 0°59’05.6″E
Adrar, Algeria
Purchased: 2022
Classification: Martian meteorite (Shergottite)
History: Purchased from Algerian dealer Ali Mftah Mftah by Mark Lyon in 2022.
Physical characteristics: Single stone with patches of black fusion crust, sandblasted surfaces show exposed olivine phenocrysts. A polished slice reveals numerous pale green olivine phenocrysts up to ~1 cm in diameter that poikilitically enclose smaller pyroxene grains. The groundmass consists of dark gray pyroxene grains up to 500 μm and smaller olivine grains.
Petrography: (C. Agee, UNM) This meteorite has the approximate modal abundances: 50% clinopyroxene, 25% olivine, 10% maskelynite, with accessory ilmenite, chromite, Ti-Cr spinel, and pyrite. Clinopyroxene shows a tightly bound, continuous calcium enrichment trend. Olivine phenocrysts show a narrow compositional range from low Ca-pyroxene to pigeonite to subcalcic augite. Maskelynite is usually observed occupying pyroxene and olivine grain boundary pockets. Small vesicles are scattered throughout.
Geochemistry: (M. Spilde, UNM) Olivine Fa40.4±0.9, Fe/Mn=50±2, CaO=0.25±0.05, (wt%), n=6; clinopyroxene Fs26.3±4.6Wo17.6±9.2, Fe/Mn=29±2, n=12; maskelynite An51.0±3.2Ab47.2±3.4Or1.8±0.5, n=7.
Classification: Martian shergottite (olivine-phyric basalt).
Specimens: 45 g on deposit at UNM, Mark Lyon holds the main mass
Out of stock
Magnificent piece, beautiful texture, rare !
Delivered with certificate in a box.
Weight | 0,2 g |
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Dimensions | 1 × 0,6 × 0,2 cm |
Form | Slice |