Soil Geochemistry Data from La Negra Formation, Chile, June-July 2025

Soil-geochemistry data collected during a field campaign in the Antofagasta Region of Chile from 2 June to 9 July 2025. The dataset includes quality-assurance metrics from ICP-MS/CV-AAS analysis and independent AAS cross-validation for six trace metals (Mn, Co, Ni, Cu, Zn, Pb). It was released by Elizabeth Lam-Esquenazi on figshare in May 2026.

Use Cases

• Analyzing spatial distribution of environmentally relevant trace metals based on the six metals (Mn, Co, Ni, Cu, Zn, Pb) mentioned.
• Validating laboratory analytical methods based on the independent cross-validation performed at Universidad Católica del Norte.
• Studying soil-rock geochemical relationships based on the collection of outcrop rock samples alongside soils.
• Assessing data quality for geochemical surveys based on the provided QA/QC metrics.

Strengths

• Includes independent laboratory cross-validation for six trace metals, providing quality assurance.
• Sample preparation is documented, including drying, disaggregation, and sieving to a 63 µm fraction.
• Released under an open CC-BY-4.0 license.

Limitations

• Row count is unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.
• The dataset is very small (32.4 KB), indicating a limited scope.

Provenance

Source

Elizabeth Lam-Esquenazi via figshare.

Collection Method

Field collection, laboratory analysis by AGS Análisis Geoquímicos, and cross-validation at Universidad Católica del Norte.

Time Range

Field campaign from 2 June to 9 July 2025.

Freshness

Last updated 2026-05-06 01:01:43; freshness should be verified.

Geography

Antofagasta Region, Chile, specifically the La Negra Formation.