haughtoniten.
/ˈhɔːtənʌɪt/ Mineralogy.
A variety of biotite n., in which iron replaces much of the magnesium.
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rubellan1832
haughtonite1878
hydrobiotite1881
siderophyllite1881
caswellite1894
1878 Min. Mag. V. 183 Plates of bronzy Biotite (or Haughtonite).
1881 Academy 6 Nov. 350 The black mica which Dr. Heddle described as Haughtonite.
This entry has not yet been fully updated (first published 1898; most recently modified version published online June 2018).
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n.1878- pointing sill
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