Ferruccite Mineral Data

Ferruccite Mineral Data +

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General Ferruccite Information

Chemical Formula:

NaBF4

Composition:

Molecular Weight = 109.79 gm

Sodium 20.94 % Na 28.23 % Na₂O

Boron 9.85 % B 31.70 % B₂O₃

Fluorine 69.22 % F 69.22 % F

- % F -29.14 % -O=F₂

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

NaBF₄

IMA Status:

Valid Species (Pre-IMA) 1933

Locality:

Vesuvio (Vesuvius), Napoli, Campania, Italy Link to MinDat.org Location Data.

Name Origin:

Named for Ferruccio Zambonini.

Synonym:

ICSD 36067

PDF 11-671

Ferruccite Image

Images:

Ferruccite Avogadrite

Comments: Very small, white crystals of ferrite on massive, yellowish avogadrite.
Location: Vesuvius, Naples, Naples province, Campania, Italy. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Ferruccite Crystallography

Axial Ratios:

a:b:c =1.0912:1:1.0832

Cell Dimensions:

a = 6.82, b = 6.25, c = 6.77, Z = 4; V = 288.57 Den(Calc)= 2.53

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: C mcm

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.39(1), 3.41(0.85), 2.31(0.4),

Crystal Structure:

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Brunton G , Acta Crystallographica, Section B , 24 (1968) p.1703-1704, Refinement of the structure of NaBF4, Locality: synthetic

Physical Properties of Ferruccite

Cleavage:

[100] Good, [010] Good, [001] Good

Color:

Colorless, White.

Density:

2.496

Diaphaniety:

Transparent

Hardness:

3 - Calcite

Streak:

white

Optical Properties of Ferruccite

Gladstone-Dale:

CI meas= 0.213 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.224 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1198,KPDmeas= 0.1214,KC= 0.1543

Optical Data:

Biaxial (+), a=1.301, b=1.3012, g=1.3068, bire=0.0058, 2V(Calc)=22, 2V(Meas)=11.417.

Calculated Properties of Ferruccite

Electron Density:

r_electron=2.36 gm/cc
note: r_Ferruccite=2.50 gm/cc.

Fermion Index

Fermion Index = 0.01959
Boson Index = 0.98041

Photoelectric:

PE_Ferruccite= 0.78 barns/electron
U=PE_Ferruccite x r_electron= 1.84 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Ferruccite is Not Radioactive

Ferruccite Classification

Dana Class:

11.2.3.1 (11)Halide Complexes; Alumino-fluorides

(11.2)where (A)m B (X)4

(11.2.3)Dana Group

11.2.3.1 Ferruccite NaBF4 C mcm 2/m 2/m 2/m

Strunz Class:

III/B.01-10 III - Halogenides

III/B - Double halogenides without water, with [BF4]1-,[SiF6]2- and [AlF6]3-

III/B.01 - Ferruccite - Barberiite series

III/B.01-10 Ferruccite NaBF4 C mcm 2/m 2/m 2/m

III/B.01-20 Avogadrite (K,Cs)BF4 P nma 2/m 2/m 2/m

III/B.01-30 Barberiite (NH4)BF4 P nma 2/m 2/m 2/m

Other Ferruccite 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 Ferruccite :
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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Ferruccite

NaBF4
Dana No: 11.2.3.1 Strunz No: III/B.01-10
Locality:

Notes: