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Based on microprobe analysis and IR-spectroscopy of a representative collection of magnesium minerals of the humite group (282 samples from 80 various geological-genetic occurrences all over the world), it was shown for the first time that these minerals typically concentrate trace boron (from 0.5 to 4.9 wt % B2O3 in 63 samples). The diagnostic bands of B-O stretching vibrations in IF-spectra of magnesium...
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