nontroniten.

Brit.

/ˈnɒntrənʌɪt/, U.S.

/ˈnɑntrəˌnaɪt/

Origin: A borrowing from French. Etymon: French nontronite.

Etymology: < French nontronite (P. Berthier 1827, in Ann. de Chim. et de Physique 36 22) < Nontron , the name of the town in Dordogne, France, where the mineral was first found + -ite -ite suffix¹.

Mineralogy.

A pale yellow or greenish crystalline clay mineral, Na_0.33Fe₂³⁺(Si,Al)₄O₁₀(OH)₂, belonging to the smectite or montmorillonite group and sometimes resembling opal. Also called chloropal.

ΘΚΠ

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

pinguite1831

nontronite1832

fettbol1835

volkonskoite1844

gramenite1858

morencite1904

1832 C. U. Shepard Treat. Mineral. 246 Nontronite... Soft; opake: unctuous and tender.

1875 G. J. Brush Man. Determinative Mineral. (ed. 2) Index 101 Nontronite = Chloropal.

1928 Amer. Jrnl. Sci. 215 10 A large number of names have been proposed for the hydrous silicates of ferric iron; and of these nontronite, chloropal, pinguite, fettbol, and graminite are recognized by most mineralogists as belonging to the species nontronite.

1963 M. H. Hey App. to 2nd Ed. of Index Mineral Species 117 Nontronite... The older name Chloropal has passed out of common use.

1988 Nature 6 Oct. 532/2 The lavas in the two vent fields are mantled with red-orange ‘nontronite’ deposits, an assemblage of varying amounts of iron oxides, silica and iron-rich smectite.

1993 A. M. Clark Hey's Mineral Index (ed. 3) 499/2 The name nontronite was accepted by the IMA Commission, although chloropal has priority.

This entry has been updated (OED Third Edition, December 2003; most recently modified version published online March 2022).

单词	nontronite
释义	nontroniten. Brit. /ˈnɒntrənʌɪt/, U.S. /ˈnɑntrəˌnaɪt/ Origin: A borrowing from French. Etymon: French nontronite. Etymology: < French nontronite (P. Berthier 1827, in Ann. de Chim. et de Physique 36 22) < Nontron , the name of the town in Dordogne, France, where the mineral was first found + -ite -ite suffix¹. Mineralogy. A pale yellow or greenish crystalline clay mineral, Na_0.33Fe₂³⁺(Si,Al)₄O₁₀(OH)₂, belonging to the smectite or montmorillonite group and sometimes resembling opal. Also called chloropal. ΘΚΠ the world > the earth > minerals > types of mineral > silicates > phyllosilicate > [noun] > smectites > nontronite pinguite1831 nontronite1832 fettbol1835 volkonskoite1844 gramenite1858 morencite1904 1832 C. U. Shepard Treat. Mineral. 246 Nontronite... Soft; opake: unctuous and tender. 1875 G. J. Brush Man. Determinative Mineral. (ed. 2) Index 101 Nontronite = Chloropal. 1928 Amer. Jrnl. Sci. 215 10 A large number of names have been proposed for the hydrous silicates of ferric iron; and of these nontronite, chloropal, pinguite, fettbol, and graminite are recognized by most mineralogists as belonging to the species nontronite. 1963 M. H. Hey App. to 2nd Ed. of Index Mineral Species 117 Nontronite... The older name Chloropal has passed out of common use. 1988 Nature 6 Oct. 532/2 The lavas in the two vent fields are mantled with red-orange ‘nontronite’ deposits, an assemblage of varying amounts of iron oxides, silica and iron-rich smectite. 1993 A. M. Clark Hey's Mineral Index (ed. 3) 499/2 The name nontronite was accepted by the IMA Commission, although chloropal has priority. This entry has been updated (OED Third Edition, December 2003; most recently modified version published online March 2022). < n.1832
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