{"product_id":"nwa-11900-ureilite-meteorite-specimen-official-augite-bearing-ureilite-northwest-africa-1","title":"NWA 11900 Ureilite Meteorite Specimen Official Augite-Bearing Ureilite Northwest Africa","description":"\u003cp\u003eAn authentic specimen of the officially classified Northwest Africa 11900 (NWA 11900) meteorite, a rare augite-bearing ureilite approved in Meteoritical Bulletin 107 in 2018. Recovered in Western Sahara and purchased in 2017, this meteorite belongs to the highly sought-after ureilite class — an unusual category of achondrite meteorites prized for their crystal-rich interiors and carbon-bearing mineralogy.\u003c\/p\u003e\u003cp\u003eNWA 11900 is especially notable for its striking interior mosaic of green and brown crystals revealed when cut and polished. The combination of olivine, pyroxene, metallic phases, and dispersed graphite creates a highly distinctive appearance rarely seen in ordinary meteorites.\u003c\/p\u003e\u003ch2\u003eOfficial Classification\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eName:\u003c\/strong\u003e Northwest Africa 11900 (NWA 11900)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry:\u003c\/strong\u003e Western Sahara\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYear Purchased:\u003c\/strong\u003e 2017\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClassification:\u003c\/strong\u003e Ureilite (Augite-Bearing)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShock Stage:\u003c\/strong\u003e Low\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeathering Grade:\u003c\/strong\u003e Moderate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal Known Weight:\u003c\/strong\u003e 457 grams\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOfficial Publication:\u003c\/strong\u003e Meteoritical Bulletin 107\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003ePhysical Characteristics\u003c\/h2\u003e\u003cp\u003eOfficial reports describe: weathered exterior, green and brown crystalline interior, mosaic mineral texture, fine-grained Fe-metal along grain boundaries, and scattered graphite grains throughout the stone.\u003c\/p\u003e\u003ch2\u003eScientific Composition\u003c\/h2\u003e\u003cp\u003eScientific analysis identified: olivine, pigeonite, augite, Fe-metal, and graphite inclusions.\u003c\/p\u003e\u003cp\u003eThe graphite-bearing nature of ureilites gives many specimens a unique dark matrix and crystalline appearance that makes them instantly recognizable among advanced collectors.\u003c\/p\u003e\u003cp\u003eUnlike ordinary chondrites, ureilites are achondritic meteorites composed primarily of coarse silicate crystals with carbon-rich phases and metallic inclusions. Their unusual texture and rarity make them especially desirable among collectors seeking visually distinctive meteorites.\u003c\/p\u003e\u003ch2\u003eIdeal For\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eUreilite collectors\u003c\/li\u003e\n\u003cli\u003eAchondrite enthusiasts\u003c\/li\u003e\n\u003cli\u003eAdvanced meteorite collections\u003c\/li\u003e\n\u003cli\u003eCarbon-bearing meteorite collectors\u003c\/li\u003e\n\u003cli\u003eMuseum and educational displays\u003c\/li\u003e\n\u003cli\u003eCollectors seeking unusual crystalline meteorites\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eDepending on preparation, specimens may display: green olivine crystals, brown pyroxene structures, metallic grain boundaries, graphite inclusions, polished crystalline textures, and brecciated achondritic appearance.\u003c\/p\u003e\u003cp\u003eA remarkable extraterrestrial artifact representing one of the more visually distinctive and uncommon meteorite classes available to collectors today.\u003c\/p\u003e\u003ch2\u003eMeasurements \u0026amp; Weight\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDimensions: 30 x 15 x 0.3 mm\u003c\/li\u003e\n\u003cli\u003eWeight: 1.68g\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCondition\u003c\/h2\u003e\u003cp\u003ePlease review all photos carefully for overall condition, weathering, fractures, crystalline structure, and preparation characteristics, as they are considered part of the description. Meteorites are natural extraterrestrial objects and commonly display structural variation, oxidation, and natural mineralogical textures.\u003c\/p\u003e","brand":"Prospector's Vault","offers":[{"title":"Default Title","offer_id":42422915465298,"sku":null,"price":26.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0575\/8805\/6146\/files\/IMG_4050.jpg?v=1779763385","url":"https:\/\/prospectorsvault.com\/products\/nwa-11900-ureilite-meteorite-specimen-official-augite-bearing-ureilite-northwest-africa-1","provider":"Prospector's Vault","version":"1.0","type":"link"}