sellaiten.

/ˈsɛləʌɪt/

Etymology: < Italian sellaite (Strüver 1868, in Atti d. R. Accad. d. Sci. di Torino: Classe di Sci. fis., etc. IV. 35), < the name of Q. Sella (1827–84), Italian mining engineer and mineralogist: see -ite suffix¹.

Mineralogy.

Native magnesium fluoride, MgF₂, occurring as fibrous aggregates of colourless tetragonal crystals.

ΚΠ

1872 G. J. Brush in J. D. Dana Syst. Mineral. (new ed.) App. i. 14 Sellaite... Found with anhydrite at Geibroula in Piedmont.

1923 J. W. Mellor Comprehensive Treat. Inorg. & Theoret. Chem. IV. xxix. 296 Warm crystals of sellaïte show a faint violet luminescence with cleavage.

1933 Mineral. Abstr. V. 238 Microscopical examination of the dolomite of bore-cores from the southern Harz showed the presence of sellaite as minute (0·04–0·075 mm.) tetragonal prisms.

1968 I. Kostov Mineral. 189 Sellaite is isostructural with rutile.., the chain type of structure explaining its perfect {110} cleavage, prismatic to acicular habit, and optically positive character.

This entry has not yet been fully updated (first published 1986; most recently modified version published online June 2018).

单词	sellaite
释义	sellaiten. /ˈsɛləʌɪt/ Etymology: < Italian sellaite (Strüver 1868, in Atti d. R. Accad. d. Sci. di Torino: Classe di Sci. fis., etc. IV. 35), < the name of Q. Sella (1827–84), Italian mining engineer and mineralogist: see -ite suffix¹. Mineralogy. Native magnesium fluoride, MgF₂, occurring as fibrous aggregates of colourless tetragonal crystals. ΚΠ 1872 G. J. Brush in J. D. Dana Syst. Mineral. (new ed.) App. i. 14 Sellaite... Found with anhydrite at Geibroula in Piedmont. 1923 J. W. Mellor Comprehensive Treat. Inorg. & Theoret. Chem. IV. xxix. 296 Warm crystals of sellaïte show a faint violet luminescence with cleavage. 1933 Mineral. Abstr. V. 238 Microscopical examination of the dolomite of bore-cores from the southern Harz showed the presence of sellaite as minute (0·04–0·075 mm.) tetragonal prisms. 1968 I. Kostov Mineral. 189 Sellaite is isostructural with rutile.., the chain type of structure explaining its perfect {110} cleavage, prismatic to acicular habit, and optically positive character. This entry has not yet been fully updated (first published 1986; most recently modified version published online June 2018). < n.1872
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