{"product_id":"guemar-002","title":"Guemar 002 Lunar Meteorite Individual, Lunar (basalt) unbrecciated, 45.92g, Complete Fusion Crust","description":"\u003cp\u003eGuemar 002 is one of 33 approved meteorites in the world classified as \u003ca href=\"\/collections\/lunar-meteorites\"\u003eLunar (basalt)\u003c\/a\u003e. This 45.92g complete individual was among four oriented stones discovered together on February 10, 2023, in El-Alia, Touggurt Province, Algeria, all four retaining fresh fusion crust on recovery. This stone preserves that crust intact.\u003c\/p\u003e\n\n\u003ch2\u003eThe specimen\u003c\/h2\u003e\n\n\u003cp\u003eThis 45.92g stone is a complete, unmodified individual with no cuts, polishing, or preparation beyond documentation. The exterior carries a black, shiny fusion crust, the glassy veneer formed during atmospheric entry, preserved here in fresh condition. The interior is gray, consistent with the fine-grained basaltic mineralogy confirmed by thin section analysis at the Cascadia Meteorite Laboratory.\u003c\/p\u003e\n\n\u003cp\u003eAt 45.92g, this specimen sits well above the 1 to 20g range that defines most complete \u003ca href=\"\/collections\/lunar-meteorites\"\u003elunar individuals\u003c\/a\u003e reaching the private market. More importantly, it is unbrecciated, a categorical distinction from the regolith and impact-melt breccias that constitute the large majority of recovered lunar material.\u003c\/p\u003e\n\n\u003ch2\u003eClassification and scientific context\u003c\/h2\u003e\n\n\u003cp\u003eGuemar 002 is classified in the Meteoritical Bulletin (MB 114, approved July 25, 2025) as Lunar (basalt), recovered from Ouargla, Algeria. Classification was performed by V. Mugica, D. Sheikh, and M. Hutson at the Cascadia Meteorite Laboratory, Portland State University. The type specimen, 20.1g, is held at Cascadia.\u003c\/p\u003e\n\n\u003cp\u003eThe unbrecciated designation is the scientifically significant feature of this specimen. The Moon's surface has been heavily reworked by impacts across billions of years, and nearly all lunar material ejected to Earth arrives as regolith breccia, fragmented and compacted surface debris. A rock that escaped that processing preserves its primary igneous fabric from the original lava cooling event intact. To understand how meteorites are classified, see our guide to \u003ca href=\"\/pages\/learn-about-meteorites\"\u003ehow meteorites are classified\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003eThin section analysis documents a sub-ophitic texture with shock melt pockets. \u003ca href=\"\/pages\/learn-about-meteorites\"\u003eMaskelynite\u003c\/a\u003e laths are distributed throughout the sample. Maskelynite is plagioclase feldspar converted to amorphous glass by hypervelocity shock pressures, retaining the original chemical composition and lath morphology of the feldspar while losing its crystalline structure. Its presence records the impact event that launched the rock off the Moon. The published shock stage is M-S5. Olivine grains show zoned compositions with magnesian cores and thin Fe-rich rims, and pyroxene grains display complex zonation, consistent with a slowly cooled igneous rock subjected to later shock processing.\u003c\/p\u003e\n\n\u003cp\u003ePublished geochemistry by SEM-EDS (Cascadia, lab number CML 1816): olivine Fa50.8±15.6 (Fe\/Mn=92±6, n=19); pigeonite Fs52.4±10.5Wo15.1±2.9 (Fe\/Mn=60±6, n=10); high-Ca pyroxene Fs40.6±11.0Wo25.5±11.0 (Fe\/Mn=57±8, n=18); maskelynite An87.6±0.7 (n=19). Minor sulfides, phosphates, and titanomagnetite are also present. Classification as lunar basalt is based on texture, grain size, and mineral chemistry.\u003c\/p\u003e\n\n\u003cp\u003eThese lavas originated from partial melting of the lunar mantle and flooded impact basins between approximately 3.9 and 3.0 billion years ago, forming the dark maria visible from Earth. Apollo sampling covered only the equatorial near-side; \u003ca href=\"\/collections\/lunar-meteorites\"\u003elunar meteorites\u003c\/a\u003e like Guemar 002 extend the sampled volcanic geology of the Moon beyond the mission footprint.\u003c\/p\u003e\n\n\u003ch2\u003eAcquisition\u003c\/h2\u003e\n\n\u003cp\u003eThis specimen is offered via private sale. Purchase may be completed by bank wire transfer following invoice and confirmation of terms. A formal invoice and purchase agreement will be issued prior to payment. Escrow is available for qualified buyers upon request. Delivery is arranged through insured \u003ca href=\"\/pages\/white-glove-service-1\"\u003ewhite-glove shipping\u003c\/a\u003e with coordinated handling.\u003c\/p\u003e\n\n\u003cp\u003eThis specimen ships with a certificate of authenticity from Treasure Coast Meteorite Co. (IMCA #3323) documenting its Meteoritical Bulletin classification and provenance. No display stand is included.\u003c\/p\u003e\n\n\u003cp\u003eSerious acquisition inquiries only. Contact \u003ca href=\"mailto:brian@tcmeteorites.com\"\u003ebrian@tcmeteorites.com\u003c\/a\u003e or visit our \u003ca href=\"\/pages\/white-glove-service-1\"\u003eWhite Glove Service\u003c\/a\u003e page for institutional and private treaty inquiries.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs Guemar 002 officially classified?\u003c\/strong\u003e\u003cbr\u003e\nYes. Guemar 002 is approved in the Meteoritical Bulletin, MB 114 (approved July 25, 2025), as Lunar (basalt), recovered from Ouargla, Algeria on February 10, 2023. Classification was conducted by V. Mugica, D. Sheikh, and M. Hutson at the Cascadia Meteorite Laboratory, Portland State University.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat does \"unbrecciated\" mean and why does it matter?\u003c\/strong\u003e\u003cbr\u003e\nUnbrecciated means the rock has not been shattered and re-cemented by later impact processes. It preserves the original igneous texture from when the lava cooled on the Moon. Most \u003ca href=\"\/collections\/lunar-meteorites\"\u003elunar meteorites\u003c\/a\u003e are breccias, mixtures of rock fragments produced by billions of years of surface gardening. Unbrecciated mare basalts are substantially less common and represent primary volcanic material rather than mixed surface debris.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is maskelynite and what does it indicate?\u003c\/strong\u003e\u003cbr\u003e\n\u003ca href=\"\/pages\/learn-about-meteorites\"\u003eMaskelynite\u003c\/a\u003e is plagioclase feldspar converted to amorphous glass by hypervelocity shock, without melting. It retains the original chemical composition and lath morphology of the feldspar while losing its crystalline structure. Its presence records the impact event that launched the rock off the Moon. The published shock stage for this specimen is M-S5.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow is lunar origin confirmed?\u003c\/strong\u003e\u003cbr\u003e\nLunar meteorites plot on the terrestrial oxygen isotope fractionation line but differ from Earth rocks in mineral chemistry and volatile content. Combined with petrographic features matching Apollo samples, the sub-ophitic igneous texture, and diagnostic FeO\/MnO ratios in olivine and pyroxene consistent with lunar basalts, these indicators confirm lunar origin. For more on how \u003ca href=\"\/pages\/learn-about-meteorites\"\u003elunar meteorites\u003c\/a\u003e are identified, see our Learn section.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat documentation is included?\u003c\/strong\u003e\u003cbr\u003e\nA certificate of authenticity from Treasure Coast Meteorite Co. (IMCA #3323) referencing the Meteoritical Bulletin entry for Guemar 002, MB 114. Classification imagery is available upon request.\u003c\/p\u003e\n\n\u003cp\u003eMeteoritical Bulletin entry: \u003ca href=\"https:\/\/www.lpi.usra.edu\/meteor\/metbull.cfm?code=85278\" target=\"_blank\" rel=\"noopener\"\u003eGuemar 002\u003c\/a\u003e | Classification: Lunar (basalt) | Find, El-Alia, Ouargla, Algeria, 2023 Feb 10 | MB 114, approved July 25, 2025 | Classifier: V. Mugica, D. Sheikh, and M. Hutson, Cascadia Meteorite Laboratory | Type specimen: 20.1g, Cascadia\u003c\/p\u003e\n\n\u003cp\u003eOffered by Treasure Coast Meteorite Co., IMCA #3323. Browse our \u003ca href=\"\/collections\/lunar-meteorites\"\u003eLunar Meteorites collection\u003c\/a\u003e for additional authenticated lunar specimens.\u003c\/p\u003e","brand":"Treasure Coast Meteorite Co.","offers":[{"title":"Default Title","offer_id":44758967189551,"sku":"GUEMAR-002-45.92G-INDIVIDUAL","price":45000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0726\/9724\/9839\/files\/FullSizeRender_935f4cdc-b7d3-4c5f-b9c5-f41a49ef2cf0.heic?v=1781029370","url":"https:\/\/www.tcmeteorites.com\/products\/guemar-002","provider":"Treasure Coast Meteorite Co.","version":"1.0","type":"link"}