The mineralogical composition allows a statement regarding the origin of the particles (geogenic, anthropogenic, but also assignment to lithological units). Furthermore, the mineralogical composition has an influence on transport behavior, abrasiveness, light scattering and risk to human health.

We can determine the mineralogy of your particles by X-ray diffraction (XRD) on ground powder samples or investigate it by polarized light microscopy or scanning electron microscopy (*REM; Petrology and Mineralogy Department). It is also possible to determine the mineralogy directly on suitable filters by means of the methods mentioned.

If you have any questions, we will be glad to help you.

Radiographic analysis (D8 Discover, Bruker)

Method

Sample material

Statement

Powder diffraction (XRD)

Pulverized particles: Amount > 10 mg - 2 g

Occupied acetate filters

Qualitative, semi-quantitative mineral stock

Texture preparations (unconditioned, glycolized, burned)

Gravimetrically separated clay constituents

Specific characterization of clay minerals, identification of swellable clay minerals

Microscopy

Method	Instrument	Statement
Polarized light microscopy	Various models	Mineral composition, grain size, grain shape,
Scanning Electron Microscope (SEM) coupled with X-Ray Fluorescence*	Tescan Vega	High resolution information (nm to µm) on mineral composition, grain shape, surface texture, etc.