Manganese Nodules from the Tasman Sea, 4300m Depth

Two manganese nodules recovered from a water depth of 4300 meters in the Tasman Sea southeast of Sydney. The nodules are subspherical, about 10 cm in diameter, and have a high clay content, a low Mn:Fe ratio, and low contents of Ni (0.25%), Cu (0.17%) and Co (0.06%). The data is provided by the Australian Ocean Data Network and was last updated in April 2026.

Use Cases

• Analyze deep-sea mineral composition based on reported Ni, Cu, and Co percentages.
• Study the morphology and formation environment of manganese nodules based on their described size, shape, and associated calcareous mud.
• Investigate geochemical ratios in marine deposits based on the provided Mn:Fe ratio.
• Model the distribution of deep-sea resources based on the specific geographic location and depth.

Strengths

• Specific geochemical composition data is provided, including Ni (0.25%), Cu (0.17%), and Co (0.06%).
• Precise location and depth information: 4300 m depth, 250 nautical miles southeast of Sydney.
• Detailed physical description of the nodules: subspherical, about 10 cm in diameter.

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 geographic bias inherent to data_gov_au.

Provenance

Source

Australian Ocean Data Network

Collection Method

Recovered by HMAS Kimbla from a deep-sea trough.

Time Range

Recovery date is not specified.

Freshness

Last updated 2026-04-10 19:18:46.389495; freshness should be verified.

Geography

Tasman Sea, about 250 nautical miles southeast of Sydney (155° 35'E, 36° 15'S).