| Abstract: | The Hedjaz meteorite has been studied in detail and on a chemical basis, with 22.1% total Fe, 9% metallic Fe, 1.3% Ni and constant olivine composition (Fa23–24), can be classified as an L-group chondrite. However, petrographically Hedjaz is quite hoterogeneous and contains features characteristic of types 3, 4, 5, and 6, observations that refute a petrographic type classification. Indeed, Hedjaz, as a complex breccia, exhibits no evidence of metamorphic equilibration after accretion and supports the contention that type 4 (also 5 and 6) chondrites are not derivatives of type 3 material, and that types 5 and 6 are not necessarily more “metamorphosed,” only better crystallized. |
