Geological Report on Bauxite Occurrences in Manus Island

Australian Ocean Data Network provides a geological reconnaissance report detailing nodular bauxite deposits on Manus Island. The document describes three separate surface occurrences derived from basaltic flows and tuffaceous rocks, analyzing their formation and potential extent. The report was last updated in April 2026.

Use Cases

• Analyze the relationship between volcanic rock types (basaltic flows, tuffaceous rocks) and bauxite formation processes.
• Map potential bauxite deposit locations based on described geological conditions like sub-horizontal volcanics and underlying limestone.
• Assess mineral quality using reported analytical results for available alumina content in individual bauxite nodules.
• Study the influence of environmental factors (high temperature, high rainfall, slow drainage) on bauxitization rates.

Strengths

• Report details three distinct bauxite deposit localities with specific geological origins.
• Includes analytical results for available alumina content from individual nodules.

Limitations

• Dataset consists of a single reconnaissance report without quantitative tabular data.
• Deposits were only observed at the surface, with no depth testing conducted.
• Palaeontological evidence for sediment age is lacking, relying on probable Miocene or younger estimates.

Provenance

Source

Australian Ocean Data Network

Collection Method

Geological reconnaissance and field observation.

Time Range

null

Freshness

Report metadata last updated April 2026.

Geography

Manus Island, Territory of Papua and New Guinea