Description: Hello up for auction is NWA Unclassified meteorite, this is probably a CM2 or something more rare. This gorgeous oriented shield shape individual weighs 374.90 grams with insane looking regmaglypts and unique matrix, and foamy crust on the backside, comes with XRF Analysis paper from Blaine Reed. This meteorite is actually Unclassified and not studied, it has a polished window on the edge, no sample was cut from this, only a light polish to the flat side. This is an excellent candidate for research and classification, I can only guarantee it's a meteorite and not what type it is. I purchased this meteorite from a Moroccan dealer in 2020, and it was found in Northwest Africa 2019. It will come with COA card, thanks for your interest and take care. Oriented meteorites are the result of the fortuitous distribution of its mass prior to atmospheric entry and its angle of entry. The parabolic "heat shield" curvature seen here was naturally sculpted as a result of frictional heating with Earth's atmosphere. An oriented meteorite is typically cone shaped specimen covered with flow lines and display a roll-over rim called lip. This is the result of the passage of the meteorite through the Earths atmosphere, the heat generated by the high pressure in the front of the meteorite is enough to melt and ablate material away and roll-over onto the back side If the meteorite travels through our atmosphere with a quite stable orientation, then the material will ablate from a particular point named the apex. The apex is more or less the middle of the face of the meteor from where the flow lines radiate in the front side of the meteorite. For large oriented iron meteorite the regmaglyptes are elongated and radiate from the apex. Typically the ablation results in a more or less flat face on the back side. Some oriented meteorites display on the back side a very thick fusion crust with bubble which is an accumulation of boiling material. Sometimes described as bubbling, this thick crust on the back side is not necessary to define a meteorite as oriented but its only observed in well oriented meteorite. Oriented Meteorites What about the word ORIENTED when describing a meteorite? Perfectly flight-oriented meteorite, meaning that the meteorite held a stable flight angle during entry into Earth's atmosphere, burning a curved face onto the stone. Price for perfectly oriented meteorite can be very high even for an common ordinary chondrite, in this case what makes meteorite so special is not the type, but the shape. In some case, oriented meteorites flow lines, emanating from a single point in all directions, some are shield-shaped with a very slight curve Oriented meteorites were studied by NASA when developing the manned space program to design the re-entry vehicle. Oriented meteorite give the best shape for maximum heat deflection and the way meteorites burned under the stress of entry showed NASA the best way and shape.
Price: 11000 USD
Location: Riverside, California
End Time: 2024-12-23T21:51:40.000Z
Shipping Cost: 12.99 USD
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