Elpasolite Mineral Data (original) (raw)

General Elpasolite Information

Help on Chemical Formula: Chemical Formula:

K2NaAlF6

Help on Composition: Composition:

Molecular Weight = 242.16 gm

Potassium 32.29 % K 38.90 % K2O

Sodium 9.49 % Na 12.80 % Na2O

Aluminum 11.14 % Al 21.05 % Al2O3

Fluorine 47.07 % F 47.07 % F

- % F -19.82 % -O=F2

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

K2NaAlF6

Help on IMA Status: IMA Status:

Valid Species (Pre-IMA) 1883

Help on Locality: Locality:

St Peters Dome, El Paso County, Colorado, USA Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named for the locality

Help on Name Pronunciation: Name Pronunciation:

Elpasolite + Pronunciation Say ELPASOLITE

Help on Synonym: Synonym:

ICSD 6027

PDF 22-1235

Elpasolite Image

Click Here for Larger Elpasolite Image in a New Browser Window Images:

Click Here for Larger Elpasolite Image Elpasolite Comments: Colorless crystal of elpasolite in matrix. Location: Cetine di Cotorniano mine (Cetine mine), Rosia, Siena, Tuscany, Italy.Scale: Picture size 2.5 mm. © Thomas Witzke / Abraxas-Verlag

Elpasolite Crystallography

Help on Cell Dimensions: Cell Dimensions:

a = 8.122, Z = 4; V = 535.78 Den(Calc)= 3.00

Help on Crystal System: Crystal System:

Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F m3m

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 2.868(1), 2.03(0.9), 2.345(0.75),

Click Here for Large Elpasolite Structure Window Crystal Structure:

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| | Sabelli C , Neues Jahrbuch fur Mineralogie, Monatshefte , 1987 (1987) p.481-487, Structure refinement of elpasolite from Cetine mine, Tuscany, Italy, Locality: Cetine mine, Tuscany, Italy | | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |

Physical Properties of Elpasolite

Help on Cleavage: Cleavage:

None

Help on Color: Color:

Colorless.

Help on Density: Density:

2.995

Help on Diaphaneity: Diaphaneity:

Transparent

Help on Fracture: Fracture:

Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.

Help on Hardness: Hardness:

2.5 - Finger Nail

Help on Luster: Luster:

Vitreous - Greasy

Help on Streak: Streak:

white

Optical Properties of Elpasolite

Help on Optical Data: Optical Data:

Isotropic, n=1.376.

Calculated Properties of Elpasolite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=2.87 gm/cc
note: Specific Gravity of Elpasolite =3.00 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.0000387498
Boson Index = 0.9999612502

Help on Photoelectric: Photoelectric:

PEElpasolite = 4.02 barns/electron
U=PEElpasolite x relectron= 11.56 barns/cc.

Help on Radioactivity: Radioactivity:

GRapi = 446.36 (Gamma Ray American Petroleum Institute Units)
Concentration of Elpasolite per GRapi unit = 0.22 (%)

Estimated Radioactivity from Elpasolite - barely detectable

Elpasolite Classification

Help on Dana Class: Dana Class:

11.06.02.01 (11)Halide Complexes; Alumino-fluorides

(11.06)with miscellaneous formulae

(11.06.02)Dana Group

11.06.02.01 Elpasolite K2NaAlF6 F m3m 4/m 3 2/m

Help on Strunz Class: Strunz Class:

03.CB.15 03 - HALIDES

03.C - Complex Halides

03.CB -Neso-aluminofluorides

03.CB.15 Cryolite Na3AlF6 P 21/n 2/m

03.CB.15 Elpasolite K2NaAlF6 F m3m 4/m 3 2/m

03.CB.15 Simmonsite! Na2LiAlF6 P 21/n 2/m

Other Elpasolite Information

Help on References: References:

PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

Help on See Also: See Also:

Links to other databases for Elpasolite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

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Ask about Elpasolite here :
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Print or Cut-and-Paste your Elpasolite Specimen Label here :

Elpasolite

K2NaAlF6
Dana No: 11.06.02.01 Strunz No: 03.CB.15
Locality:

Notes: