Manganese Nodules from the Tasman Sea, 4300 Meter Depth

Two manganese nodules recovered by HMAS Kimbla from a water depth of 4300 meters, about 250 nautical miles 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 Geoscience Australia and was last updated in April 2026.

Use Cases

• Analyze the geochemical composition of deep-sea manganese nodules based on reported Ni, Cu, and Co percentages.
• Study the morphology and formation environment of nodules based on described size, shape, and associated calcareous mud.
• Model the distribution of marine mineral resources in the Tasman Sea region based on the specific location coordinates.
• Investigate the relationship between nodule composition and deposition depth based on the 4300 meter depth and position relative to the lysocline.

Strengths

• Provides precise location coordinates (155° 35E, 36° 15S) and depth (4300 m) for the sample recovery.
• Includes specific geochemical measurements for Ni (0.25%), Cu (0.17%), and Co (0.06%) content.
• Describes physical characteristics including nodule diameter (~10 cm), shape (subspherical), and clay content.

Limitations

• Row count is unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.
• The dataset appears to describe only two physical samples, which is a very small sample size.

Provenance

Source

Geoscience Australia Data

Collection Method

Recovered by HMAS Kimbla.

Time Range

Recently recovered (specific date not provided).

Freshness

Last updated 2026-04 20 01:07:02.700366; freshness should be verified.

Geography

Tasman Sea, in a northeast-trending trough about 250 nautical miles southeast of Sydney (155° 35E, 36° 15S).