Automated quantitative mineralogy applied to metamorphic rocks

Nynke Keulen, Sebastian Næsby Malkki, Shaun Graham

Research output: Contribution to journalArticleResearchpeer-review

13 Citations (Scopus)

Abstract

The ability to apply automated quantitative mineralogy (AQM) on metamorphic rocks was investigated on samples from the Fiskenæsset complex, Greenland. AQM provides the possibility to visualize and quantify microstructures, minerals, as well as the morphology and chemistry of the investigated samples. Here, we applied the ZEISS Mineralogic software platform as an AQM tool, which has integrated matrix corrections and full quantification of energy dispersive spectrometry data, and therefore is able to give detailed chemical information on each pixel in the AQM mineral maps. This has been applied to create mineral maps, element concentration maps, element ratio maps, mineral association maps, as well as to morphochemically classify individual minerals for their grain shape, size, and orientation. The visualization of metamorphic textures, while at the same time quantifying their textures, is the great strength of AQM and is an ideal tool to lift microscopy from the qualitative to the quantitative level.

Original languageEnglish
Article number47
Number of pages29
JournalMinerals
Volume10
Issue number1
DOIs
Publication statusPublished - Jan 2020

Keywords

  • Automated quantitative mineralogy (AQM)
  • Bulk composition
  • Element concentration map
  • Feret angle
  • Fiskenæsset complex
  • Grain size
  • Mineral association
  • Scanning electron microscopy
  • Visualization
  • ZEISS Mineralogic

Programme Area

  • Programme Area 4: Mineral Resources

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