Chlorbartonite

 Koashva Open Pit, Koashva Mt, Khibiny Massif, Murmansk Oblast, Russia

Chlorbartonite is a very rare K-Fe-sulfide-halide mineral. It forms bronze masses on astrophyllite-natrolite matrix, with black sphalerite and pale yellow burbankite. 

The specimen size 1.9cm x 1.2cm x 0.9cm 

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

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.

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