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 % P2 O5
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 )F0.75 O0.25
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.
Name Pronunciation:
Babefphite + Pronunciation
Synonym:
ICSD 200922
PDF 18-157
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 Dipyramidal H-M Symbol (4/m 2/m 2/m) Space Group: I 41 /amd
X Ray Diffraction:
By Intensity(I/Io ): 1.516(1), 2.163(1), 3.19(1),
Physical Properties of Babefphite
Cleavage:
None
Color:
White.
Density:
4.31
Diaphaneity:
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 Ncalc = 1.65
Optical Data:
Uniaxial (+), w=1.629, e=1.632, bire=0.0030.
Calculated Properties of Babefphite
Electron Density:
Bulk Density (Electron Density)=3.84 gm/cc note: Specific Gravity of Babefphite =4.31 gm/cc.
Fermion Index:
Fermion Index = 0.12 Boson Index = 0.88
Photoelectric:
PEBabefphite = 238.46 barns/electronU=PEBabefphite x r Electron Density= 916.65 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Babefphite is Not Radioactive
Babefphite Classification
Dana Class:
41.05.03.01 (41) Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
(41.05) where (A B)2 (XO4) Zq
(41.05.03) Dana Group
41.05.03.01 Babefphite BaBe(PO4)(F,O) I 41 /amd 4/m 2/m 2/m
Strunz Class:
08.BA.15 08 - PHOSPHATES, ARSENATES, VANADATES
08.B - Phosphates, etc. with Additional Anions, without H2O
08.BA -With small and medium-sized cations
08.BA.15 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 - 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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Babefphite
BaBe(PO4)(F,O)
Dana No: 41.05.03.01 Strunz No: 08.BA.15
Locality:
Notes:
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