Baileychlore Mineral Data

Baileychlore Mineral Data +

General Baileychlore Information

Chemical Formula:

(Zn,Al,[ ])3[Fe++2Al][Si3AlO10](OH)8

Composition:

Molecular Weight = 709.44 gm

Aluminum 7.61 % Al 14.37 % Al₂O₃

Zinc 23.04 % Zn 28.68 % ZnO

Iron 15.74 % Fe 22.51 % Fe₂O₃

Silicon 11.88 % Si 25.41 % SiO₂

Hydrogen 1.14 % H 10.16 % H₂O

Oxygen 40.59 % O

______ ______

100.00 % 101.13 % = TOTAL OXIDE

Empirical Formula:

Zn_2.5Fe³⁺₂Al₂Si₃O₁₀(OH)₈

IMA Status:

Approved IMA 1988

Locality:

Red Dome deposit, Mungana, 15 km WNW of Chillagoe, Lynd County, Queensland, Australia. Link to MinDat.org Location Data.

Name Origin:

Named for Sturges W. Bailey (1919-), mineralogist University of Wisconsin.

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Baileychlore Crystallography

Axial Ratios:

a:b:c =0.5775:1:1.5557

Cell Dimensions:

a = 5.346, b = 9.257, c = 14.402, Z = 2; alpha = 90°, beta = 97.12°, gamma = 90° V = 707.23 Den(Calc)= 3.33

Crystal System:

TriclinicSpace Group: C1,C1

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

By Intensity(I/I_o): 7.14(1), 14.3(0.9), 1.542(0.6),

Physical Properties of Baileychlore

Cleavage:

[001] Perfect

Color:

Yellow green, Dark green.

Density:

3.18

Diaphaniety:

Transparent

Hardness:

2.5-3 - Finger Nail-Calcite

Luster:

Pearly

Streak:

light green

Optical Properties of Baileychlore

Gladstone-Dale:

CI meas= 0.194 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.23 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1796,KPDmeas= 0.1881,KC= 0.2334

Optical Data:

Biaxial (?), a=1.582, g=1.614, bire=0.0320

Pleochroism (x):

green.

Pleochroism (y):

yellow green.

Pleochroism (z):

yellow green.

Calculated Properties of Baileychlore

Electron Density:

r_electron=3.11 gm/cc
note: r_Baileychlore=3.18 gm/cc.

Fermion Index

Fermion Index = 0.01852
Boson Index = 0.98148

Photoelectric:

PE_Baileychlore= 16.66 barns/electron
U=PE_Baileychlore x r_electron= 51.83 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Baileychlore is Not Radioactive

Baileychlore Classification

Dana Class:

71.4.1.6 (71)Phyllosilicate Sheets of Six-Membered Rings

(71.4)interlayered 1:1, 2:1, and octahedra

(71.4.1)Chlorite group (Tri-Dioctahedral)

71.4.1.1 Donbassite Al2[Al2.33][Si3AlO10](OH)8 C 2/m 2/m

71.4.1.2 Cookeite LiAl4(Si3Al)O10(OH)8 P 2₁/a 2/m

71.4.1.3 Sudoite Mg2(Al,Fe)3Si3AlO10(OH)8 C 2/m 2/m

71.4.1.4 Clinochlore (Mg,Fe)5Al(Si3Al)O10(OH)8 C 2/m 2/m

71.4.1.5 Nimite (Ni,Mg,Fe)5Al(Si3Al)O10(OH)8 C 2/m 2/m

71.4.1.6 Baileychlore (Zn,Al,[])3[Fe2Al][Si3AlO10](OH)8 C1,C1 Tri

71.4.1.7 Chamosite (Fe,Mg,Fe)5Al(Si3Al)O10(OH,O)8 C 2/m 2/m

71.4.1.8 Pennantite Mn5Al(Si3Al)O10(OH)8 C 2/m 2/m

71.4.1.9 Orthochamosite! (Fe,Mg,Fe)5Al(Si3Al)O10(OH,O)8 C3m-pseudoHEX Ortho

71.4.1.10 Borocookeite! Li(13x)Al(4-x)(BSi3)O10(OH,F)8[x=0-0.33] pseudo C 2/m 2/m

Strunz Class:

VIII/H.23-50 VIII - Silicates

VIII/H - Phyllosilicates (layered) Mica like with [Si4O10]4- and related groups

VIII/H.23 - Chlorite group

VIII/H.23-10 Sudoite Mg2(Al,Fe)3Si3AlO10(OH)8 C 2/m 2/m

VIII/H.23-20 Clinochlore (Mg,Fe)5Al(Si3Al)O10(OH)8 C 2/m 2/m

VIII/H.23-30 Chamosite (Fe,Mg,Fe)5Al(Si3Al)O10(OH,O)8 C 2/m 2/m

VIII/H.23-40 Orthochamosite (Fe,Mg,Fe)5Al(Si3Al)O10(OH,O)8 C3m-pseudoHEX Ortho

VIII/H.23-50 Baileychlore (Zn,Al,[])3[Fe2Al][Si3AlO10](OH)8 C1,C1 Tri

VIII/H.23-60 Pennantite Mn5Al(Si3Al)O10(OH)8 C 2/m 2/m

VIII/H.23-70 Nimite (Ni,Mg,Fe)5Al(Si3Al)O10(OH)8 C 2/m 2/m

VIII/H.23-80 Gonyerite Mn3[Mn3Fe][(Si,Fe)4O10](OH,O)8 pseudo-HEX Ortho

VIII/H.23-90 Cookeite LiAl4(Si3Al)O10(OH)8 P 2₁/a 2/m

VIII/H.23-95 Borocookeite! Li(13x)Al(4-x)(BSi3)O10(OH,F)8[x=0-0.33] pseudo C 2/m 2/m

VIII/H.23-100 Manandonite Li2Al4[(Si2AlB)O10](OH)8 C1 1

VIII/H.23-110 Franklinfurnaceite Ca2(Fe,Al)MnMn3Zn2Si2O10(OH)8 C 2 2

Other Baileychlore Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)

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Baileychlore

(Zn,Al,[ ])3[Fe++2Al][Si3AlO10](OH)8
Dana No: 71.4.1.6 Strunz No: VIII/H.23-50
Locality:

Notes: