Balipholite Mineral Data

Balipholite Mineral Data +

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General Balipholite Information

Chemical Formula:

BaMg2LiAl3Si4O12(OH,F)8

Composition:

Molecular Weight = 718.20 gm

Barium 19.12 % Ba 21.35 % BaO

Lithium 0.97 % Li 2.08 % Li₂O

Magnesium 6.77 % Mg 11.22 % MgO

Aluminum 11.27 % Al 21.30 % Al₂O₃

Silicon 15.64 % Si 33.46 % SiO₂

Hydrogen 0.84 % H 7.53 % H₂O

Oxygen 40.10 % O

Fluorine 5.29 % F 5.29 % F

- % F -2.23 % -O=F₂

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

BaMg₂LiAl₃Si₄O₁₂(OH)₆F₂

IMA Status:

Approved IMA 1974

Locality:

Link to MinDat.org Location Data.

Synonym:

ICSD 68260

PDF 33-787

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Balipholite Crystallography

Axial Ratios:

a:b:c =0.6719:1:0.2549

Cell Dimensions:

a = 13.6, b = 20.24, c = 5.16, Z = 4; V = 1,420.36 Den(Calc)= 3.36

Crystal System:

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

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

By Intensity(I/I_o): 10.12(1), 3.39(0.91), 4.05(0.78),

Crystal Structure:

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Peng Z , Ma Z , Han S , Scientia Sinica , B30 (1987) p.779-784, The refinement of crystal structure of balipholite, Locality: Hunan Province, China

Physical Properties of Balipholite

Cleavage:

[010] Good

Color:

White, Light yellow.

Density:

3.33 - 3.35, Average = 3.34

Diaphaniety:

Transparent to Translucent

Hardness:

5-5.5 - Apatite-Knife Blade

Luster:

Silky

Streak:

white

Optical Properties of Balipholite

Gladstone-Dale:

CI meas= 0.104 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.109 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1763,KPDmeas= 0.1774,KC= 0.1979

Optical Data:

Biaxial (-), a=1.581, b=1.5958, g=1.6008, bire=0.0198, 2V(Calc)=58, 2V(Meas)=68-72.

Calculated Properties of Balipholite

Electron Density:

r_electron=3.22 gm/cc
note: r_Balipholite=3.34 gm/cc.

Fermion Index

Fermion Index = 0.04906
Boson Index = 0.95094

Photoelectric:

PE_Balipholite= 80.71 barns/electron
U=PE_Balipholite x r_electron= 259.75 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Balipholite is Not Radioactive

Balipholite Classification

Dana Class:

65.1.5.4 (65)Inosilicate Single-Width Unbranched Chains, W=1

(65.1)with chains P=2

(65.1.5)Carpholite group

65.1.5.1 Carpholite MnAl2Si2O6(OH)4 C cca 2/m 2/m 2/m

65.1.5.2 Ferrocarpholite (Fe,Mg)Al2Si2O6(OH)4 C cca 2/m 2/m 2/m

65.1.5.3 Magnesiocarpholite MgAl2Si2O6(OH)4 C cca 2/m 2/m 2/m

65.1.5.4 Balipholite BaMg2LiAl3Si4O12(OH,F)8 C cca 2/m 2/m 2/m

65.1.5.5 Potassic-carpholite! (K,Na,[])(Li,Mn)2Al)4Si4O12(OH)4(F,OH)4 C cca 2/m 2/m 2/m

65.1.5.6 Vanadiocarpholite! MnVAl(Si2O6)(OH)4 C cca 2/m 2/m 2/m

Strunz Class:

VIII/F.03-40 VIII - Silicates

VIII/F - Inosilicates (chain and band) double chains [Si2O6]4-

VIII/F.03 - Magnesiocarpholite - Vinogradovite series

VIII/F.03-10 Magnesiocarpholite MgAl2Si2O6(OH)4 C cca 2/m 2/m 2/m

VIII/F.03-20 Ferrocarpholite (Fe,Mg)Al2Si2O6(OH)4 C cca 2/m 2/m 2/m

VIII/F.03-30 Carpholite MnAl2Si2O6(OH)4 C cca 2/m 2/m 2/m

VIII/F.03-40 Balipholite BaMg2LiAl3Si4O12(OH,F)8 C cca 2/m 2/m 2/m

VIII/F.03-50 Lorenzenite Na2Ti2Si2O9 P bcn 2/m 2/m 2/m

VIII/F.03-60 Lintisite Na3LiTi2Si4O14·2(H2O) C 2/c 2/m

VIII/F.03-70 Vinogradovite (Na,K)4Ti4(Si,Al)8O26·3(H2O,Na) A2/a 2/m

VIII/F.03-80 Paravinogradovite! (Na,[])2(Ti,Fe)4(Si2O6)2(Si3AlO10)(OH)4·H2O P1 1

Other Balipholite Information

References:

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

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Balipholite

BaMg2LiAl3Si4O12(OH,F)8
Dana No: 65.1.5.4 Strunz No: VIII/F.03-40
Locality:

Notes: