description NWA 856 Overview
NWA 856 is a Martian meteorite classified as a basaltic shergottite, discovered in Northwest Africa around 2001. As a shergottite, it is a piece of Mars that was ejected into space by a massive asteroid impact on the Red Planet before eventually landing on Earth. The meteorite is particularly notable for its geochemical enrichment signature, sharing characteristics with other enriched shergottites found in the region. Researchers study specimens like NWA 856 to better understand the volcanic history, mantle evolution, and geochemical diversity of Mars.
help NWA 856 FAQ
What does the basaltic shergottite classification tell me about NWA 856?
It identifies NWA 856 as a Martian igneous rock, specifically a basalt formed from volcanic material on Mars. The meteorite reached Earth after an asteroid impact ejected it from the Martian surface.
Where was NWA 856 found, and when was it classified?
NWA 856 was discovered in Northwest Africa around 2001. Its name follows the Northwest Africa designation used for many meteorites found in the region.
How is NWA 856 different from the famous Martian meteorite ALH 84001?
NWA 856 is a basaltic shergottite, while ALH 84001 is an older Martian orthopyroxenite. Both came from Mars, but they represent different rock types and geological histories.
What should a collector check before buying an NWA 856 specimen?
The specimen should be identified as a basaltic shergottite and accompanied by provenance or classification information. A seller should also state the specimen's mass, dimensions, and whether it is a fragment or a polished slice.
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