Description: Hello, up for sale is NWA 15910 classified as a Martian Shergottite (Evolved pyroxene-phyric basalt). This gorgeous slice weighs 13.534 grams with a perfect polish to one side and light golden brown color. The two major phases in this meteorite are clinopyroxene and maskelynite. Ubiquitous minor phases are magnetite, titanomagnetite, ilmenite, merrillite, troilite, and fayalite. The clinopyroxene has a modal abundance of approximately 60%, with significant core to rim zoning observed in backscatter electron images indicating an igneous crystallization trend with Mg-rich pigeonite cores, mantled by augite, and rimmed with ferropigeonite. Clinopyroxene average grain size is approximately 300-500 m. Maskelynite has modal abundance of approximately 30%, most grains are thin and elongate with maximum length ~1 mm. This is my last slice available and comes with a COA card "Streaming Meteorites" and a display case. Thanks for your interest and take care. Name: Northwest Africa 15910 This is an OFFICIAL meteorite name. Abbreviation: NWA 15910 Observed fall: No Year found: 2023 Country: (Northwest Africa) Mass: 362 g Northwest Africa 15910 (NWA 15910) (Northwest Africa) Purchased: 2023 Classification: Martian meteorite (Shergottite) History: Two identically appearing stones 276.6 and 85.3 g were found together. The 85.3 g stone was purchased from Mark Lyon by Jiong Ge in 2023. Physical characteristics: Sandblasted exterior lacking fusion crust. Petrography: (C. Agee and A. Ross UNM) The two major phases in this meteorite are clinopyroxene and maskelynite. Ubiquitous minor phases are magnetite, titanomagnetite, ilmenite, merrillite, troilite, and fayalite. The clinopyroxene has a modal abundance of approximately 60%, with significant core to rim zoning observed in backscatter electron images indicating an igneous crystallization trend with Mg-rich pigeonite cores, mantled by augite, and rimmed with ferropigeonite. Clinopyroxene average grain size is approximately 300-500 m. Maskelynite has modal abundance of approximately 30%, most grains are thin and elongate with maximum length ~1 mm. Geochemistry: (A. Ross, UNM) Clinopyroxene Fs54.719.5Wo17.46.0, Fe/Mn=365, n=12; maskelynite An50.64.8Ab47.94.3Or1.50.5, n=6; fayalite Fa97.21.0, Fe/Mn=556, n=4. Classification: Evolved pyroxene-phyric basalt, clinopyroxene compositional zoning trends are similar to QUE 94201, NWA 12522, NWA 12550, NWA 12960, and Ben Kesbes 002, however this meteorite also has minor amounts of fayalitic olivine present. Specimens: 20 g on deposit at UNM, Jiong Ge holds one stone of 85.3 g,. Data from: MB112 Table 0 Line 0: Date:P 2023 Mass (g):361.9 Pieces:2 Class:Martian (shergottite) Shock stage:high Weathering grade:moderate Fayalite (mol%):97.21.0 Ferrosilite (mol%):54.719.5 Wollastonite (mol%):17.46.0 Classifier:C. Agee, UNM Type spec mass (g):20 Type spec location:UNM Main mass:Mark Lyon Comments:Fieldname BAS-48/49; submitted by C. Agee How did these rocks from Mars end up on Earth? Only one thing could send a piece of rock flying out fast enough to escape Mars's gravity: an asteroid or comet slamming into Mars. Mars's gravity is about one-third as strong as Earth's, and its atmosphere is about 125 times thinner, so it is easier to eject a rock from Mars than from Earth. After orbiting the Sun for more than a million years, some of the ejected pieces eventually struck Earth as meteorites.
Price: 1049.3 USD
Location: Riverside, California
End Time: 2024-09-08T00:03:12.000Z
Shipping Cost: 9 USD
Product Images
Item Specifics
All returns accepted: ReturnsNotAccepted
