Rhein Quarzit Facade

Macroscopic description:
The hand sample is grey coloured ,
fine grained with schistose fabric.
Microscopic description:
The thin section show a clear anisotropy underlined by the orientation of the mica lamina
and of the level of quarzt.
The mineral present are:
Quartz (75%) in allotriomorphic grain whose dimensions vary from 0.05 to I mm;
White mica (10%o) whose lamina reach the millimetre;
Piroxene (augite), garnet, K feldspar, plagioclase, titanite, rutilo and chlorite for the
remaining 15 %.
The rock is a quartzitic paragneiss.