Boron in magnesium minerals of the humite group

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 t...

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Bibliographic Details
Published inMoscow University geology bulletin Vol. 68; no. 1; pp. 43 - 51
Main Authors Gerasimova, E. I., Pekov, I. V., Kononkova, N. N., Vigasina, M. F., Chukanov, N. V., Guseva, E. V.
Format Journal Article
LanguageEnglish
Published Heidelberg Allerton Press, Inc 01.02.2013
Springer Nature B.V
Subjects
Boron
Earth and Environmental Science
Earth Sciences
Geochemistry
Geology
Magnesium
Minerals
humite
norbergite
chondrodite
clinohumite
humite group
IR-spectroscopy
boron in natural silicates
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Summary: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 % B 2 O 3 in 63 samples). The diagnostic bands of B-O stretching vibrations in IF-spectra of magnesium minerals of the humite group occur within the 1170–1190, 1262–1289, and 1306–1331 cm −1 ranges and are regularly shifted to the low frequencies in a norbergite-chondrodite-humite-clinohumite series. Boron isomorphically replaces silicon in tetrahedra, probably, by Pertsev’s scheme: Si 4+ + O 2− → B 3+ + (F,OH) − .
Bibliography:ObjectType-Article-1
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ISSN:0145-8752
1934-8436
DOI:10.3103/S0145875213010031