Ansermetite

 Fianel Mine, Ausserferrera, Ferrera Valley, Hinterrhein Valley, Grischun, Switzerland

This is a very rich miniature specimen of very rare dark red ansermetite (manganese vanadate), in quite large flattened crystals on chert matrix. 

 From the Type Locality

The specimen size 4.5cm x 3.4 cm x 1.3cm 

---------------------------------------------------------------------

I’m a professional geologist/mineralogist, with analytical background. Many of my minerals were checked by x-ray diffraction and energy dispersive spectrometry. Some of my specimens comes with the documentation of the analysises.

---------------------------------------------------------------------