Automated Quantitative Mineralogy Applied to Metamorphic Rocks

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...

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Bibliographic Details
Published in:Minerals
Main Authors: Nynke Keulen, Sebastian Næsby Malkki, Shaun Graham
Format: Article in Journal/Newspaper
Language:English
Published: MDPI AG 2020
Subjects:
automated quantitative mineralogy (aqm)
scanning electron microscopy
zeiss mineralogic
fiskenæsset complex
feret angle
element concentration map
visualization
mineral association
bulk composition
grain size
Mineralogy
QE351-399.2
Greenland
Fiskenæsset
Online Access:https://doi.org/10.3390/min10010047
https://doaj.org/article/2b95f303377a4d21b4847c94b1652c73
Description
Summary: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.

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