volkonskoiten.

/vɒlˈkɒnskəʊʌɪt/

Forms: Also 1800s wolch-, wolk-; volch-.

Etymology: < German wolchonskoit (A. Kämmerer 1831, in Jahrb. f. Mineral., etc. II. 420), < the name of Prince ‘Wolchonskoy’ (? i.e. Volkonsky): see -ite suffix¹.

Mineralogy.

A green or bluish-green amorphous clay mineral of the montmorillonite group in which there is some substitution by chromium, now regarded as a variety of nontronite.

ΘΚΠ

the world > the earth > minerals > types of mineral > silicates > phyllosilicate > [noun] > smectites > nontronite

pinguite1831

nontronite1832

fettbol1835

volkonskoite1844

gramenite1858

morencite1904

1844 J. D. Dana Syst. Mineral. (ed. 2) vi. 533 Wolchonskoite. Amorphous. Dull-shining.

1852 Amer. Jrnl. Sci. 64 62 Silicated Chrome (Wolchonskoite?).

1892 E. S. Dana J. D. Dana's Syst. Mineral. (ed. 6) 696 Wolchonskoite... Volchonskoite.

1953 R. E. Grim Clay Mineral. iv. 58 Substitutions within the octahedral sheet [of montmorillonite] may vary from few to complete... Replacement of aluminum by iron yields nontronite; by chromium, volkonskoite; by zinc, sauconite.

1973 Norsk Geol. Tidsskr. LIII. 329 The Cr₂O₃ content of volkonskoite may vary within wide limits, and values up to 15–20% have been reported from Russian occurrences.

This entry has not yet been fully updated (first published 1986; most recently modified version published online December 2020).

单词	volkonskoite
释义	volkonskoiten. /vɒlˈkɒnskəʊʌɪt/ Forms: Also 1800s wolch-, wolk-; volch-. Etymology: < German wolchonskoit (A. Kämmerer 1831, in Jahrb. f. Mineral., etc. II. 420), < the name of Prince ‘Wolchonskoy’ (? i.e. Volkonsky): see -ite suffix¹. Mineralogy. A green or bluish-green amorphous clay mineral of the montmorillonite group in which there is some substitution by chromium, now regarded as a variety of nontronite. ΘΚΠ the world > the earth > minerals > types of mineral > silicates > phyllosilicate > [noun] > smectites > nontronite pinguite1831 nontronite1832 fettbol1835 volkonskoite1844 gramenite1858 morencite1904 1844 J. D. Dana Syst. Mineral. (ed. 2) vi. 533 Wolchonskoite. Amorphous. Dull-shining. 1852 Amer. Jrnl. Sci. 64 62 Silicated Chrome (Wolchonskoite?). 1892 E. S. Dana J. D. Dana's Syst. Mineral. (ed. 6) 696 Wolchonskoite... Volchonskoite. 1953 R. E. Grim Clay Mineral. iv. 58 Substitutions within the octahedral sheet [of montmorillonite] may vary from few to complete... Replacement of aluminum by iron yields nontronite; by chromium, volkonskoite; by zinc, sauconite. 1973 Norsk Geol. Tidsskr. LIII. 329 The Cr₂O₃ content of volkonskoite may vary within wide limits, and values up to 15–20% have been reported from Russian occurrences. This entry has not yet been fully updated (first published 1986; most recently modified version published online December 2020). < n.1844
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