1) Carbonate mineral 2) Magnesium mineral 
Breunnerite is a variety of magnesite, with a magnesium / iron ratio of 90/10 to 70/30. It has been described by Wilhelm Karl Ritter von Haidinger in samples of Pfitsch pass, Zamser Grund and Großer Mt Greiner, Zemmgrund two cites of the Ziller Valley, Tyrol, Austria. ...