Planetary Achondrite Meteorite - 6×4.5×2 cm - 41.2 g Specimen is the Main Mass (the lagest specimen in existence) of this lunar meteorite (exactly 41.23g). Sent with signed Meteoritical Society page, by original owner. Reserve price is set at 4120€ (100€/g), to own this Main Mass of an official lunar, sold by original owner (and not a random fragment supposed paired to a lunar, but still for sale under an official name). NWA 11212is a lunar meteorite found in 2015, classified by Anthony Irving at UWS (University of Washington at Seattle), and referenced, in the Meteoritical Society database : https://www.lpi.usra.edu/meteor/metbull.php?code=65388 This is a "Feldpathic Regolithic Breccia", come from the part of the Moon named "Highlands", the lunar older crust with an age of over 4 billion years, up to 4.4 billion years. With main mineral Feldspar, the structure is the one of Regolith : The impact of micrometeoroids, sometimes travelling faster than 96,000 km/h (60,000 mph), generates enough heat to melt or partially vaporize upper part of Moon soil. This melting and refreezing welds particles together into glassy, jagged-edged agglutinates. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Physical characteristics: A group of small stones (total 197.5 g) lacking fusion crust. Fresh interiors exhibit white to beige clasts in a dark gray matrix. Petrography: (A. Irving and S. Kuehner, UWS) Breccia composed of angular mineral grains of anorthite, olivine, pigeonite, ferropigeonite, subcalcic augite, augite, Ti-chromite and ilmenite in a finer grained, partly vesicular matrix containing kamacite, troilite, pentlandite, Mg-ilmenite and minor barite. Small bubbles are concentrated in groups within the matrix. ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------