ralstoniten.

Brit.

/ˈrɔːlstənʌɪt/,

/ˈrɔːlstn̩ʌɪt/, U.S.

/ˈrɔlstəˌnaɪt/

Origin: From a proper name, combined with an English element. Etymons: proper name Ralston , -ite suffix¹.

Etymology: < the name of J. Grier Ralston (1815–80), amateur mineralogist, who discovered the mineral + -ite suffix¹.

Mineralogy.

A fluoride mineral which occurs as colourless or white, transparent to translucent crystals, chiefly as an alteration product of cryolite.Ralstonite is a hydrated fluoride and hydroxide of sodium, magnesium, and aluminium, NaMgAl(F,OH)₆·H₂O. Crystal system: cubic.

ΚΠ

1871 G. J. Brush in Amer. Jrnl. Sci. 2 31 The conclusion [is] that the Greenland octahedral mineral is a new fluoride, and I propose for it the name Ralstonite, after its discoverer.

1964 Philos. Trans. (Royal Soc.) A. 256 557 Ralstonite..occurs in yellow warty crusts associated with halite, hieratite and cryolite (?) in specimen 540.

2006 Jrnl. Environmental Radioactivity 86 299 Fluorine..forms..precipitates known in the phosphate industry as ‘alkali fluorosilicates’. This latter material was found to be in all three samples in the form of..malladrite (Na₂SiF₆), together with additional hexafluorides (e.g. ralstonite).

This entry has been updated (OED Third Edition, June 2008; most recently modified version published online March 2022).

单词	ralstonite
释义	ralstoniten. Brit. /ˈrɔːlstənʌɪt/, /ˈrɔːlstn̩ʌɪt/, U.S. /ˈrɔlstəˌnaɪt/ Origin: From a proper name, combined with an English element. Etymons: proper name Ralston , -ite suffix¹. Etymology: < the name of J. Grier Ralston (1815–80), amateur mineralogist, who discovered the mineral + -ite suffix¹. Mineralogy. A fluoride mineral which occurs as colourless or white, transparent to translucent crystals, chiefly as an alteration product of cryolite.Ralstonite is a hydrated fluoride and hydroxide of sodium, magnesium, and aluminium, NaMgAl(F,OH)₆·H₂O. Crystal system: cubic. ΚΠ 1871 G. J. Brush in Amer. Jrnl. Sci. 2 31 The conclusion [is] that the Greenland octahedral mineral is a new fluoride, and I propose for it the name Ralstonite, after its discoverer. 1964 Philos. Trans. (Royal Soc.) A. 256 557 Ralstonite..occurs in yellow warty crusts associated with halite, hieratite and cryolite (?) in specimen 540. 2006 Jrnl. Environmental Radioactivity 86 299 Fluorine..forms..precipitates known in the phosphate industry as ‘alkali fluorosilicates’. This latter material was found to be in all three samples in the form of..malladrite (Na₂SiF₆), together with additional hexafluorides (e.g. ralstonite). This entry has been updated (OED Third Edition, June 2008; most recently modified version published online March 2022). < n.1871
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