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How to say breunnerite high quality voices
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.
References
Breunnerite Wikipedia(Text) CC BY-SA