Whole-Rock Geochemistry of Breccia Samples from the Songwe Hill Complex

Breccia units at the Songwe Hill and Mauze complex in Malawi, located at the contact between nepheline syenite and country rock. The dataset contains major and trace element composition data for whole-rock samples, many of which are float due to sparse outcrop, and is associated with NERC Grant NE/R013403/1. Samples are described as heavily altered, composed predominantly of clay minerals and Fe- and Mn-oxide phases.

Use Cases

• Modeling hydrothermal alteration processes based on the described clay and oxide mineralogy.
• Investigating the geochemical signature of breccia-hosted mineralization near nepheline syenite contacts.
• Correlating whole-rock geochemistry with visual sample descriptions like Mn-oxide staining and buff-pink coloration.

Strengths

• Data is linked to a specific peer-reviewed publication in Geological Magazine (2021).
• Samples are from a defined geological context at the Songwe Hill / Mauze complex.
• Associated with a specific research grant (NERC Grant NE/R013403/1), providing traceability.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Sample size is described as small, with the largest breccia unit being approximately 125 x 125 meters.

Provenance

Source

British Geological Survey (BGS)

Collection Method

Likely contains laboratory analysis of collected rock samples.

Freshness

Last updated 2026-05-28 14:05:22.415582; freshness should be verified.

Geography

Breccias around Mauze and Nkalonje, part of the Songwe Hill complex, Malawi.