Manganese Oxide Chemistry in Limonite Samples from Five Laterite Deposits

Electron microprobe analyses provide elemental percentages for Mn-oxyhydroxide phases within limonite samples. Data were acquired between 2015 and 2018 using a Cameca SX100 instrument at the Natural History Museum, London. The dataset was used to identify Co and Ni host minerals and assess their variability in specific Mn-oxyhydroxide phases.

Use Cases

• Identify Co and Ni bearing host minerals within Mn-oxyhydroxide phases using elemental percentage data.
• Assess the amount and variability of Co and Ni within specific Mn-oxyhydroxide phases from different laterite deposits.
• Compare elemental composition of Mn-oxyhydroxide phases across samples from Acoje, Caldag, Nkamouna, Piaui, and Shevchenko deposits.
• Support resource assessment and processing strategies for laterite deposits by analyzing Mn-oxyhydroxide chemistry.

Strengths

• Data collection spanned a 4-year period from 2015 to 2018.
• Analyses cover samples from five distinct laterite deposits across the Philippines, Turkey, Cameroon, Brazil, and Kazakhstan.
• Data were acquired using a Cameca SX100 electron microprobe, a standard instrument for precise elemental analysis.

Limitations

• The specific number of point analyses (rows) and measured elements (columns) is not provided.
• Sample data and file formats are unavailable, limiting immediate assessment of data structure.
• The dataset's focus on five specific deposits may limit broader geographical generalizability.

Provenance

Source

British Geological Survey (BGS), acquired by the NHM CoG3 team at the Natural History Museum, London.

Collection Method

Wavelength dispersive X-ray spectrometry on a Cameca SX100 electron microprobe, performed on polished, carbon-coated samples in epoxy resin blocks.

Time Range

2015 to 2018.

Freshness

Metadata was last updated in March 2026, but the underlying data collection ended in 2018.

Geography

Samples from Acoje (Philippines), Caldag (Turkey), Nkamouna (Cameroon), Piaui (Brazil), and Shevchenko (Kazakhstan).