NIR spectral trends of HED meteorites: Can we discriminate between the magmatic evolution, mechanical mixing and observation geometry effects?

► Despite exsolutions primary pyroxene composition are retrievable from spectroscopy. ► Eucrite-Diogenite mixing is linear in the Band I/Band II diagram. ► Howardites are not pure mixture of eucrites and diogenites. ► The BAR criteria can help identify olivine-diogenites. ► Observation geometry has a minor effect on the retrieval of Band I and II positions.