http://www.psrd.hawaii.edu/Jan13/NWA7034.html

New Martian Meteorite:New Martian Meteorite:Northwest Africa (NWA 7034)Northwest Africa (NWA 7034)

Meteorite NWA 7034 is a breccia, with minerals and rock fragments set in a fine-grained glassy matrix.

http://www.psrd.hawaii.edu/Jan13/NWA7034.html

Evidence for a Martian OriginEvidence 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.

http://www.psrd.hawaii.edu/Jan13/NWA7034.html

New Martian Meteorite is Similar toNew Martian Meteorite is Similar toTypical Martian CrustTypical 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.

http://www.psrd.hawaii.edu/Jan13/NWA7034.html

Distinctive Mantle Source RegionDistinctive Mantle Source Region

NWA 7034 has different REE abundances and pattern, and slightly different oxygen isotopic compositions compared to known Martian meteorites.

http://www.psrd.hawaii.edu/Jan13/NWA7034.html

NWA 7034 Older Than Most Martian MeteoritesNWA 7034 Older Than Most Martian Meteorites

Martian meteorite ages ALH 84001: 4100 MaNWA 7034: 2089 MaNakhlites & Chassigny: 1300 MaShergottites: 170-575 Ma