Babefphite Mineral Data

Babefphite Mineral Data +

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General Babefphite Information

Chemical Formula:

BaBe(PO4)(F,O)

Composition:

Molecular Weight = 259.56 gm

Barium 52.91 % Ba 59.07 % BaO

Beryllium 3.47 % Be 9.64 % BeO

Phosphorus 11.93 % P 27.34 % P₂O₅

Oxygen 26.20 % O

Fluorine 5.49 % F 5.49 % F

- % F -2.31 % -O=F₂

______ ______

100.00 % 99.23 % = TOTAL OXIDE

Empirical Formula:

BaBe(PO₄)F_0.75O_0.25

Environment:

In eluvium directly above rare-metal skarn deposits associated with alkaline intrusions.

IMA Status:

Approved IMA 1966

Locality:

Occurs in the Aunik fluorite-rare metals deposit, Buryatia, Russia. Link to MinDat.org Location Data.

Name Origin:

For Barium, Beryllium, Fluorine, and Phosphorous in the composition.

Synonym:

ICSD 200922

PDF 18-157

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Babefphite Crystallography

Axial Ratios:

a:c = 1:3.42331

Cell Dimensions:

a = 4.89, c = 16.74, Z = 4; V = 400.29 Den(Calc)= 4.31

Crystal System:

Tetragonal - Ditetragonal DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: I 4₁/amd

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

By Intensity(I/I_o): 1.516(1), 2.163(1), 3.19(1),

Physical Properties of Babefphite

Cleavage:

None

Color:

White.

Density:

4.31

Diaphaniety:

Transparent

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Hardness:

3.5-4 - Copper Penny-Fluorite

Luster:

Vitreous - Greasy

Streak:

white

Optical Properties of Babefphite

Gladstone-Dale:

CI meas= 0.033 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.033 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1463,KPDmeas= 0.1463,KC= 0.1514

Optical Data:

Uniaxial (+), w=1.629, e=1.632, bire=0.0030.

Calculated Properties of Babefphite

Electron Density:

r_electron=3.84 gm/cc
note: r_Babefphite=4.31 gm/cc.

Fermion Index

Fermion Index = 0.12913
Boson Index = 0.87087

Photoelectric:

PE_Babefphite= 238.46 barns/electron
U=PE_Babefphite x r_electron= 916.65 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Babefphite is Not Radioactive

Babefphite Classification

Dana Class:

41.5.3.1 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen

(41.5)where (A B)2 (XO4) Zq

(41.5.3)Dana Group

41.5.3.1 Babefphite BaBe(PO4)(F,O) I 4₁/amd 4/m 2/m 2/m

Strunz Class:

VII/B.01-60 VII - Phosphates, Arsenates and Vanadates

VII/B - Waterfree phosphates with unfamiliar anions F, Cl, O, OH. cations of very small size: Li, Be

VII/B.01 - Herderite - Babefphite series

VII/B.01-10 Herderite CaBe(PO4)F P 2₁/a 2/m

VII/B.01-20 Hydroxylherderite CaBe(PO4)(OH) P 2₁/a 2/m

VII/B.01-30 Bergslagite CaBe(AsO4)(OH) P 2₁/c 2/m

VII/B.01-50 Vayrynenite MnBe(PO4)(OH,F) P 2₁/a 2/m

VII/B.01-60 Babefphite BaBe(PO4)(F,O) I 4₁/amd 4/m 2/m 2/m

Other Babefphite Information

References:

NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

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

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Print or Cut-and-Paste your Babefphite Specimen Label here :

Babefphite

BaBe(PO4)(F,O)
Dana No: 41.5.3.1 Strunz No: VII/B.01-60
Locality:

Notes: