The Northeastern Oceanus Procellarum (NE-OP) study area is a patchwork of lava flows that range in model age from 1.4–3.5 Ga (average age for all count areas is 2.3 Ga), but whose FeO and TiO₂ contents deviate little. The intermediate TiO₂ content values (4.0–6.8 wt%) exhibited by the mare in this region represent material that is underrepresented in the current lunar sample collection. The model ages in the study region are bimodal (~2.2 Ga and ~3.0+ Ga), with eruption of lava flows at the Chang‘E-5 landing site occurring at ~3.0 Ga. By comparison, other investigators estimate the model age of the Chang‘E-5 site to be ~1.2 to 1.6 Ga. We find preliminary evidence that differences in measurement methodology may lead to disparate model ages and explain the difference in predicted model age of the Chang‘E-5 site.