TY  - JOUR
A1  - Hetzel, Ralf
A1  - Altenberger, Uwe
A1  - Strecker, Manfred
T1  - Structural and chemical evolution of pseudotachylytes during seismic events
Y1  - 1996
ER  - 
TY  - JOUR
A1  - Dämpfling, Helge L. C.
A1  - Mielke, Christian
A1  - Koellner, Nicole
A1  - Lorenz, Melanie
A1  - Rogass, Christian
A1  - Altenberger, Uwe
A1  - Harlov, Daniel E.
A1  - Knoper, Michael
T1  - Automatic element and mineral detection in thin sections using hyperspectral transmittance imaging microscopy (HyperTIM)
JF  - European journal of mineralogy
N2  - 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). 
This is accomplished by using a hyperspectral camera system that operates in the visible and near-infrared (VNIR) range with a specifically designed sample holder, scanning setup, and a microscope lens. 

We utilize this method on a monazite ore thin section from Steenkampskraal (South Africa), which we analyzed for the rare earth element (REE)-bearing mineral monazite ((Ce,Nd,La)PO4), with high concentrations of Nd. The transmittance analyses with the hyperspectral VNIR camera can be used to identify REE minerals and Nd in thin sections. 

We propose a three-point band depth index, the Nd feature depth index (NdFD), and its related product the Nd band depth index (NdBDI), which enables automatic mineral detection and classification for the Nd-bearing monazites in thin sections. In combination with the average concentration of the relative Nd content, it permits a destruction-free, total concentration calculation for Nd across the entire thin section.
Y1  - 2022
U6  - https://doi.org/10.5194/ejm-34-275-2022
SN  - 0935-1221
SN  - 1617-4011
VL  - 34
IS  - 3
SP  - 275
EP  - 284
PB  - Copernicus
CY  - Göttingen
ER  -