Lahmada, Early Pre-NWA Meteorite, H6 Chondrite, Micromount

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Back before the flood of NWA meteorites, there were several meteorites recovered from the region and classified using their usual place names. Over time, this trickle of meteorite recoveries became a flood of thousands. Labs and scientists were overwhelmed and many of the new meteorites had incomplete or falsified find data. This lack of reliable data, combined with sheer numbers, led to the creation of NWA designation in 1999. Since 1999, meteorites from the Sahara are only given place names if their find data is solid and reliable, while most others receive a NWA-xxxx catalog number.

Most of these early pre-NWA meteorites are now very difficult to acquire. They were absorbed into institutional and private collections many years ago and they are rarely seen on the open market. I got lucky and managed to acquire a small fragment of Lahmada meteorite. Lahmada was recovered from the Western Sahara (near the town of Zag) in 1998. The Swiss and German finders had the meteorite analyzed at the Planetary Institute in Munster Germany. It was classified as an H6 chondrite that is moderately shocked (S3) and moderately weathered (W3).

Refer to the photo. The black centimeter cube is shown for scale and is not included. You are purchasing a small fragment like the one shown. Your purchase will include a labeled gemjar for safe storage.

From the Meteoritical Bulletin entry on Lahmada :


Western Sahara

Found 1998

Ordinary chondrite (H6)

Many fragments of a chondrite totaling 7.36 kg were found in the Lahmada region near the town of Zag. The three largest pieces fit together forming a mass of 3.08 kg. Classification and mineralogy (A. Bischoff and D. Weber, Mün): breccia containing shock veins; olivine Fa20.4, pyroxene Fs18.3; shock stage, S3; weathering grade, W3. Specimens: main mass, 7.34 kg, JNMC; type specimen, Mün