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New Martian Meteorite: Northwest Africa (NWA 7034)

New Martian Meteorite: Northwest Africa (NWA 7034). Courtesy Carl Agee. Meteorite NWA 7034 is a breccia, with minerals and rock fragments set in a fine-grained glassy matrix. Evidence for a Martian Origin.

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New Martian Meteorite: Northwest Africa (NWA 7034)

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  1. New Martian Meteorite:Northwest Africa (NWA 7034) Courtesy Carl Agee Meteorite NWA 7034 is a breccia, with minerals and rock fragments set in a fine-grained glassy matrix.

  2. Evidence for a Martian Origin Mn and Fe concentrations in pyroxene is an effective way to distinguish rocks from different planetary bodies. Note that the data for NWA 7034 fall along the line defined by Martian meteorites.

  3. New Martian Meteorite is Similar toTypical Martian Crust TAS diagram for classification of igneous rocks. NWA 7034 falls with rocks and soils from the surface and mean surface measured from orbit (GRS) Martian meteorites (SNC) are depleted in alkalis.

  4. Distinctive Mantle Source Region NWA 7034 has different REE abundances and pattern, and slightly different oxygen isotopic compositions compared to known Martian meteorites.

  5. NWA 7034 Older Than Most Martian Meteorites Martian meteorite ages ALH 84001: 4100 Ma NWA 7034: 2089 Ma Nakhlites & Chassigny: 1300 Ma Shergottites: 170-575 Ma

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