In this study we present a novel method for the automatic detection of minerals and elements using hyperspectral transmittance imaging microscopy measurements of complete thin sections (HyperTIM).

Rocks containing the serpentine mineral lizardite occur in many tectonic settings. Knowing the crystal orientation of lizardite in these rocks tells us how they deform and gives insights into their physical properties. The crystal orientation of lizardite is challenging to obtain using standard techniques. To overcome this challenge, we developed a method using Raman spectroscopy to map the crystal orientation of lizardite with minimal preparation on standard thin sections.

A very representative type of historic brick, made of Mg- and Ca-rich illitic clays fired at high temperatures and used in the city of Padua, was studied. The mineral phases formed during the firing and the processes that took place after firing have enhanced the durability of the bricks, so the data obtained may be significant to the current ceramic industry. This study was framed within the CLAYONRISK project (MSCA-IF-2018) and was performed based on archeometric methodologies.