Magnetite Sand Concentrations On Bougainville Island

Magnetite with combined titanium dioxide is the predominant heavy mineral in the island's beach sands, derived from active andesitic volcanoes like Mt. Balbi. The Australian Ocean Data Network published this geological survey, which analyzes concentrations on the eastern and western coasts. Data was last updated in April 2026.

Use Cases

• Map magnetite sand distribution using described geological features like 'unconsolidated pyroclastic and alluvial aprons'.
• Assess economic potential of magnetite concentrations by analyzing described 'old strands' on the western coastal plain.
• Plan magnetic surveys to delineate zones of magnetite concentration based on the survey methodology described.

Strengths

• Analysis covers multiple geographic regions including the eastern coast and western coastal plain.
• Identifies specific volcanic sources for the magnetite, such as Mt. Balbi, Mt. Bagana, and Mt. Taroka.

Limitations

• No quantitative sample data or concentration measurements are provided in the description.
• The report suggests high concentrations on the eastern coast are 'probably too small' for ore deposits, indicating limited commercial scope.

Provenance

Source

Australian Ocean Data Network

Collection Method

Geological survey and analysis.

Time Range

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Freshness

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Geography

Bougainville Island, Territory of Papua and New Guinea.