Geological Inspection Report for Gold Prospecting on Misima Island, 1961

February 1961 inspection report of prospecting work by Pacific Island Mines Limited on Misima Island, Papua. The report details a program of costeaning to discover gold-bearing quartz-manganese lodes, the installation of a 50-ton-per-day treatment plant, and the geological context of the findings. Further work is recommended to accurately grade the lode material and investigate extensions of the mineralized zone.

Use Cases

• Historical analysis of gold prospecting techniques based on the described costeaning and adit driving methods.
• Study of lode geology based on descriptions of shear zones, porphyry intrusions, and schist contacts.
• Resource estimation research based on reported gold grades of four to six pennyweights per ton and the 2500-foot outcrop distance.
• Comparative analysis of mineral exploration programs based on the detailed work plan outlined for further investigation.

Strengths

• Report provides specific geological details, including an 80-foot wide shear zone and a 2500-foot outcrop distance.
• Contains concrete operational data, such as the installation of a plant capable of treating fifty tons a day.
• Includes a specific gold grade estimate of four to six pennyweights per ton.

Limitations

• Row count is unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.
• Data may reflect temporal bias inherent to a single 1961 inspection report.

Provenance

Source

Geoscience Australia Data

Collection Method

Field inspection report.

Time Range

February 1961

Freshness

Last updated 2026-05-10 16:53:09.655407; freshness should be verified.

Geography

Misima Island, Papua (now part of Papua New Guinea)