villiaumiten.

/ˈvɪlɪəmʌɪt/

Etymology: < French villiaumite (A. Lacroix 1908, in Compt. Rend. CXLVI. 215), < Villiaume , name of a French explorer in whose collection the mineral was first identified: see -ite suffix¹.

Mineralogy.

Native sodium fluoride, NaF, occurring as red, pink, or orange transparent isometric crystals. The symmetry is erroneously described in quot. 1908.

ΘΚΠ

the world > the earth > minerals > types of mineral > halides > [noun] > other fluorides

cryolite1800

yttrocerite1817

fluocerite1835

prosopite1854

pachnolite1866

thomsenolite1868

tysonite1880

hieratite1882

villiaumite1908

neighborite1961

1908 Jrnl. Chem. Soc. 94 ii. 201 This new mineral, called villiaumite, is tetragonal and pseudo-cubic, with three perfect cleavages at right angles to one another.

1970 Amer. Mineralogist 55 126 Thermodynamic calculations show that fluorite is to be expected as the common fluoride mineral in both silica-saturated and under~saturated igneous rocks; in calcium- and silica-poor assemblages villiaumite is favored, but in calcium-poor quartz-bearing rocks, cryolite will prevail.

This entry has not yet been fully updated (first published 1986; most recently modified version published online March 2019).

单词	villiaumite
释义	villiaumiten. /ˈvɪlɪəmʌɪt/ Etymology: < French villiaumite (A. Lacroix 1908, in Compt. Rend. CXLVI. 215), < Villiaume , name of a French explorer in whose collection the mineral was first identified: see -ite suffix¹. Mineralogy. Native sodium fluoride, NaF, occurring as red, pink, or orange transparent isometric crystals. The symmetry is erroneously described in quot. 1908. ΘΚΠ the world > the earth > minerals > types of mineral > halides > [noun] > other fluorides cryolite1800 yttrocerite1817 fluocerite1835 prosopite1854 pachnolite1866 thomsenolite1868 tysonite1880 hieratite1882 villiaumite1908 neighborite1961 1908 Jrnl. Chem. Soc. 94 ii. 201 This new mineral, called villiaumite, is tetragonal and pseudo-cubic, with three perfect cleavages at right angles to one another. 1970 Amer. Mineralogist 55 126 Thermodynamic calculations show that fluorite is to be expected as the common fluoride mineral in both silica-saturated and under~saturated igneous rocks; in calcium- and silica-poor assemblages villiaumite is favored, but in calcium-poor quartz-bearing rocks, cryolite will prevail. This entry has not yet been fully updated (first published 1986; most recently modified version published online March 2019). < n.1908
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