breunneriten.
/ˈbrɔɪnərʌɪt/ Mineralogy.
The name given by Haidinger to a variety of magnesite in which some of the magnesium is replaced by iron.
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magnesite1815
breunnerite1825
giobertite1835
1825 W. Haidinger tr. F. Mohs Treat. Min. I. 411 Brachytypous. Rhombohedral... Breunnerite.
1857 J. D. Dana Man. Mineral. (new ed.) vi. 248 Mesitine spar, (Breunnerite.) A carbonate of iron and manganese occurring in yellowish rhombohedrons.
1929 H. L. Bowman Miers's Mineral. (ed. 2) i. 255 The anhydrous rhombohedral carbonate known by the name of breunnerite.
1960 W. H. Dennen Princ. Mineral. vii. 288 Magnesite... Chemical varieties: Ferroan (breunnerite), manganoan, calcian.
This entry has not yet been fully updated (first published 1933; most recently modified version published online June 2018).
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n.1825