16.36: Fluorita
- Page ID
- 90485
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\(\newcommand{\avec}{\mathbf a}\) \(\newcommand{\bvec}{\mathbf b}\) \(\newcommand{\cvec}{\mathbf c}\) \(\newcommand{\dvec}{\mathbf d}\) \(\newcommand{\dtil}{\widetilde{\mathbf d}}\) \(\newcommand{\evec}{\mathbf e}\) \(\newcommand{\fvec}{\mathbf f}\) \(\newcommand{\nvec}{\mathbf n}\) \(\newcommand{\pvec}{\mathbf p}\) \(\newcommand{\qvec}{\mathbf q}\) \(\newcommand{\svec}{\mathbf s}\) \(\newcommand{\tvec}{\mathbf t}\) \(\newcommand{\uvec}{\mathbf u}\) \(\newcommand{\vvec}{\mathbf v}\) \(\newcommand{\wvec}{\mathbf w}\) \(\newcommand{\xvec}{\mathbf x}\) \(\newcommand{\yvec}{\mathbf y}\) \(\newcommand{\zvec}{\mathbf z}\) \(\newcommand{\rvec}{\mathbf r}\) \(\newcommand{\mvec}{\mathbf m}\) \(\newcommand{\zerovec}{\mathbf 0}\) \(\newcommand{\onevec}{\mathbf 1}\) \(\newcommand{\real}{\mathbb R}\) \(\newcommand{\twovec}[2]{\left[\begin{array}{r}#1 \\ #2 \end{array}\right]}\) \(\newcommand{\ctwovec}[2]{\left[\begin{array}{c}#1 \\ #2 \end{array}\right]}\) \(\newcommand{\threevec}[3]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \end{array}\right]}\) \(\newcommand{\cthreevec}[3]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \end{array}\right]}\) \(\newcommand{\fourvec}[4]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \\ #4 \end{array}\right]}\) \(\newcommand{\cfourvec}[4]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \\ #4 \end{array}\right]}\) \(\newcommand{\fivevec}[5]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \\ #4 \\ #5 \\ \end{array}\right]}\) \(\newcommand{\cfivevec}[5]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \\ #4 \\ #5 \\ \end{array}\right]}\) \(\newcommand{\mattwo}[4]{\left[\begin{array}{rr}#1 \amp #2 \\ #3 \amp #4 \\ \end{array}\right]}\) \(\newcommand{\laspan}[1]{\text{Span}\{#1\}}\) \(\newcommand{\bcal}{\cal B}\) \(\newcommand{\ccal}{\cal C}\) \(\newcommand{\scal}{\cal S}\) \(\newcommand{\wcal}{\cal W}\) \(\newcommand{\ecal}{\cal E}\) \(\newcommand{\coords}[2]{\left\{#1\right\}_{#2}}\) \(\newcommand{\gray}[1]{\color{gray}{#1}}\) \(\newcommand{\lgray}[1]{\color{lightgray}{#1}}\) \(\newcommand{\rank}{\operatorname{rank}}\) \(\newcommand{\row}{\text{Row}}\) \(\newcommand{\col}{\text{Col}}\) \(\renewcommand{\row}{\text{Row}}\) \(\newcommand{\nul}{\text{Nul}}\) \(\newcommand{\var}{\text{Var}}\) \(\newcommand{\corr}{\text{corr}}\) \(\newcommand{\len}[1]{\left|#1\right|}\) \(\newcommand{\bbar}{\overline{\bvec}}\) \(\newcommand{\bhat}{\widehat{\bvec}}\) \(\newcommand{\bperp}{\bvec^\perp}\) \(\newcommand{\xhat}{\widehat{\xvec}}\) \(\newcommand{\vhat}{\widehat{\vvec}}\) \(\newcommand{\uhat}{\widehat{\uvec}}\) \(\newcommand{\what}{\widehat{\wvec}}\) \(\newcommand{\Sighat}{\widehat{\Sigma}}\) \(\newcommand{\lt}{<}\) \(\newcommand{\gt}{>}\) \(\newcommand{\amp}{&}\) \(\definecolor{fillinmathshade}{gray}{0.9}\)| Fluorita | |
|---|---|
| Composición química | CaF 2 fluoruro de alcio |
| Sistema de cristal | Cúbico |
| Hábito | Octaédrico, cubos, gemelos interpenetrantes |
| Escote | Perfecto, octaédrico |
| Fractura | Concoidal |
| Dureza | 4 |
| Naturaleza óptica | Isotrópico |
| Índice de refracción | 1.434 |
| Birrefringencia | Isotrópico |
| Dispersión | Muy bajo, 0.007 |
| Gravedad específica | 3.18 |
| Lustre | Mal vítreo |
| Fluorescencia | Blanco azulado, morado (LW) |
Figura\(\ PageIndex {1}\): Fluorita con Barita y Mina Galena
Elmwood, Carthage, Tennessee
Figure\(\ PageIndex {2}\): Fluorita con Mina de
Elmwood de Esfalerita y Barita, Cartago, Tennessee
Figura\(\PageIndex{3}\): Fluorita morada facetada
Figura\(\PageIndex{4}\): Fluorita verde
Westmoreland, New Hampshire
Figura\(\PageIndex{5}\): Fluorita Verde Facetada; 229 quilates
Figura\(\PageIndex{6}\): Fluorita
Figura\(\PageIndex{7}\): Centro de
arcilla de cristales de fluorita amarilla, Ohio
Figura\(\PageIndex{8}\): Fluorita Amarilla Facetada
847.4 quilates y 84.7 quilates
Figura\(\PageIndex{9}\): Fluorita Verde Amarillento
Diagnóstico
Termoluminiscencia
La fluorita puede luminiscencia cuando se calienta. La energía almacenada de la radiación UV se libera si se calienta a cierta temperatura y el efecto depende de la cantidad de energía almacenada.
Esto se puede ver cuando se coloca una pequeña cantidad de fluorita en una cucharadita y se calienta sobre una vela durante unos minutos (en una habitación oscura).
Material de Telemark, Noruega mostrará una termoluminiscencia azul-verde.
Fenómenos ópticos
Cambio de color
Fluorita de cambio de color se ha reportado con un cambio de azul a púrpura (muy parecido a algún granate cambio de color).