Frankdicksonite Mineral Data

Frankdicksonite Mineral Data +

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General Frankdicksonite Information

Chemical Formula:

BaF2

Composition:

Molecular Weight = 175.32 gm

Barium 78.33 % Ba 87.45 % BaO

Fluorine 21.67 % F 21.67 % F

- % F -9.13 % -O=F₂

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

BaF₂

IMA Status:

Approved IMA 1974

Locality:

Link to MinDat.org Location Data.

Synonym:

ICSD 64717

PDF 4-452

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Frankdicksonite Crystallography

Cell Dimensions:

a = 6.1964, Z = 4; V = 237.91 Den(Calc)= 4.89

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/I_o): 3.581(1), 2.191(0.56), 1.87(0.47),

Crystal Structure:

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Wyckoff R W G , Crystal Structures , 1 (1963) p.239-444, Second edition. Interscience Publishers, New York, New York, Fluorite structure

Physical Properties of Frankdicksonite

Cleavage:

[111] Perfect

Color:

Colorless.

Density:

4.89

Diaphaniety:

Transparent

Hardness:

3 - Calcite

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Frankdicksonite

Gladstone-Dale:

CI meas= 0.205 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.205 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.0971,KPDmeas= 0.0971,KC= 0.1221

Optical Data:

Isotropic, n=1.475.

Calculated Properties of Frankdicksonite

Electron Density:

r_electron=4.13 gm/cc
note: r_{Frankdicksonite}=4.89 gm/cc.

Fermion Index

Fermion Index = 0.13959
Boson Index = 0.86041

Photoelectric:

PE_{Frankdicksonite}= 372.02 barns/electron
U=PE_{Frankdicksonite} x r_electron=1,535.66 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Frankdicksonite is Not Radioactive

Frankdicksonite Classification

Dana Class:

9.2.1.2 (9)Anhydrous and Hydrated Halides

(9.2)where A (X)2

(9.2.1)Dana Group

9.2.1.1 Fluorite CaF2 F m3m 4/m 3 2/m

9.2.1.2 Frankdicksonite BaF2 F m3m 4/m 3 2/m

9.2.1.3 Tveitite-(Y) Ca1-xYxF2x,x~0.3 Unk Mono

Strunz Class:

III/A.08-20 III - Halogenides

III/A - Simple Halogenides, without water Metal : Halogen = 1 : 2, 1 : 3

III/A.08 - Fluorite series and related compounds

III/A.08-10 Fluorite CaF2 F m3m 4/m 3 2/m

III/A.08-20 Frankdicksonite BaF2 F m3m 4/m 3 2/m

III/A.08-25 Haleniusite-(La)! (La,Ce)OF F m3m 4/m 3 2/m

III/A.08-30 Tveitite-(Y) Ca1-xYxF2x,x~0.3 Unk Mono

III/A.08-40 Gagarinite-(Y) NaCaY(F,Cl)6 P 3 3

III/A.08-45 Zajacite-(Ce) Na(REExCa1-x)(REEyCa1-y)F6where(xney) P 3 3

III/A.08-50 Laurelite Pb7F12Cl2 P 6 6

III/A.08-60 Coccinite* HgI2(?) P 4₁/nmc 4/m 2/m 2/m

Other Frankdicksonite Information

References:

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

See Also:

Links to other databases for Frankdicksonite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris

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Frankdicksonite

BaF2
Dana No: 9.2.1.2 Strunz No: III/A.08-20
Locality:

Notes: