This is primitive meteorite classified as an H4 ordinary chondrite from the Sahara Desert weighs 477 grams and shows a well-preserved primary fusion crust, regmaglypts, secondary fusion crust, shock-melt veins, and abundant, well-defined chondrules. This is one of my most recent classifications, and you will be buying from the main mass holder. Except for the type specimen required for classification and a few small sections which will remain with me, this is all there is of this meteorite. The buyer will also receive (upon request) a few microscope thin-section, cross-polarised light images taken by the classifier, showing various types of chondrules and the matrix of the specimen. Northwest Africa 18525 (NWA 18525) (Northwest Africa) Purchased: 2025 Nov 19 Classification: Ordinary chondrite (H4) History: Purchased from a meteorite dealer at an online auction. Physical characteristics: Single specimen, showing primary fusion crust on ~15% of the surface together with regmaglypts, and secondary fusion crust on approximately 85% of the surface. Petrography: (Jose Garcia, ADARA) Thin section shows a well developed chondritic texture, with chondrules well preserved (445±142 µm (n=32)), chondrule fragments and minerals, set into a fine-grained matrix. Olivine shows undulatory extinction and irregular fractures. FeNi is partially converted into iron oxides. Troilite (partially altered) was observed. Geochemistry: Olivine (Fa19.1±0.2, N = 10), low-Ca pyroxene (Fs17.4±0.6Wo1.1±0.1, N = 10). Classification: Ordinary chondrite (H4, S2, W2) based on mineral composition, texture, and magnetic properties. I am a member of the Meteoritical Society (#7743), the Global Meteorite Association (#G0129) and have been collecting meteorites for over 16 years.