The web search results discuss China-Mozambique cooperation and critical minerals generally, but none of the provided snippets explicitly confirm that 'Mozambique and China agreed to map the vast, untapped deposits of critical minerals buried beneath the African nation’s resource-rich northern provinces' as a specific, agreed-upon action. The evidence is suggestive of cooperation in this area but lacks direct confirmation of the specific agreement mentioned.

The web search results mention lithium, graphite, and rare earth elements in the context of mineral mapping generally (e.g., US efforts), but none of the provided evidence specifically links a planned geological survey *in Mozambique* to target these exact three elements. The evidence is too general to confirm the claim's specific scope for Mozambique.

The evidence confirms that attacks have displaced people in Cabo Delgado (e.g., one report mentions over 46,000 displaced people), and that the insurgency impacts projects. However, the provided snippets do not contain corroborating evidence from multiple independent sources to confirm the specific figures ('over a million people') or the direct involvement/stalling of 'multi-billion-dollar projects involving Chinese state-owned companies' as stated in the claim.