Lunijianlaite Mineral Data

Lunijianlaite Mineral Data +

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General Lunijianlaite Information

Chemical Formula:

LiAl6(Si7Al)O20(OH)10

Composition:

Molecular Weight = 882.47 gm

Lithium 0.79 % Li 1.69 % Li₂O

Aluminum 21.40 % Al 40.44 % Al₂O₃

Silicon 22.28 % Si 47.66 % SiO₂

Hydrogen 1.14 % H 10.21 % H₂O

Oxygen 54.39 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

LiAl₇Si₇O₂₀(OH)₁₀

Environment:

Hydrothermally altered rhyolite.

IMA Status:

Approved IMA 1990

Locality:

Qingtian, Zhejiang Province, China. Link to MinDat.org Location Data.

Name Origin:

Named for "chlorite alternating with pyrophyllite".

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Lunijianlaite Crystallography

Axial Ratios:

a:b:c =0.5674:1:2.6083

Cell Dimensions:

a = 5.09, b = 8.97, c = 23.397, Z = 2; beta = 90° V = 1,068.24 Den(Calc)= 2.74

Crystal System:

MonoclinicSpace Group: Unk

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

By Intensity(I/I_o): 4.704(1), 3.343(0.47), 3.539(0.45),

Physical Properties of Lunijianlaite

Cleavage:

[001] Perfect

Color:

Colorless, White.

Density:

2.75

Diaphaniety:

Transparent

Habit:

Inclusions - Generally found as inclusions in other minerals.

Habit:

Lamellar - Thin laminae producing a lamellar structure.

Hardness:

2 - Gypsum

Luster:

Vitreous - Pearly

Streak:

white

Optical Properties of Lunijianlaite

Gladstone-Dale:

CI meas= 0.05 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.046 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2124,KPDmeas= 0.2116,KC= 0.2227

Optical Data:

Biaxial (-), a=1.576, b=1.583, g=1.587, bire=0.0110, 2V(Calc)=72, 2V(Meas)=61.

Calculated Properties of Lunijianlaite

Electron Density:

r_electron=2.74 gm/cc
note: r_{Lunijianlaite}=2.74 gm/cc.

Fermion Index

Fermion Index = 0.01125
Boson Index = 0.98875

Photoelectric:

PE_{Lunijianlaite}= 1.51 barns/electron
U=PE_{Lunijianlaite} x r_electron= 4.14 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Lunijianlaite is Not Radioactive

Lunijianlaite Classification

Dana Class:

71.4.2.2 (71)Phyllosilicate Sheets of Six-Membered Rings

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

(71.4.2)Interstratified Chlorite-Smectite group

71.4.2.1 Dozyite (Mg7Al2)(Si4Al2)O15(OH)12 Cm m

71.4.2.2 Lunijianlaite LiAl6(Si7Al)O20(OH)10 Unk Mono

71.4.2.3 Saliotite Na0.5Li0.5Al3AlSi3O10(OH)5 C 2/m 2/m

71.4.2.4 Tosudite Na0,5(Al,Mg)6(Si,Al)8O18(OH)12·5(H2O) Unk Ortho

71.4.2.5 Corrensite (Ca,Na,K)(Mg,Fe,Al)9(Si,Al)8O20(OH)10·n(H2O) Unk Ortho

71.4.2.6 Kulkeite Na0.35Mg8AlSi7O20(OH)10 Unk Mono

71.4.2.7 Rectorite (Na,Ca)Al4(Si,Al)8O20(OH)4·2(H2O) Unk Mono

71.4.2.8 Aliettite [Mg3Si4O10(OH)2](Ca0.5,Na)0.33(Al,Mg,Fe)2-3(Si,Al)4O10(OH)2·n(H2O) Unk Mono

71.4.2.9 Glagolevite! NaMg6[Si3AlO10](OH,O)8·H2O C1 1

Strunz Class:

VIII/H.18-05 VIII - Silicates

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

VIII/H.18 - Smectite/Montmorillonite group

VIII/H.18-05 Lunijianlaite LiAl6(Si7Al)O20(OH)10 Unk Mono

VIII/H.18-07 Saliotite Na0.5Li0.5Al3AlSi3O10(OH)5 C 2/m 2/m

VIII/H.18-10 Kulkeite Na0.35Mg8AlSi7O20(OH)10 Unk Mono

VIII/H.18-20 Aliettite [Mg3Si4O10(OH)2](Ca0.5,Na)0.33(Al,Mg,Fe)2-3(Si,Al)4O10(OH)2·n(H2O) Unk Mono

VIII/H.18-30 Rectorite (Na,Ca)Al4(Si,Al)8O20(OH)4·2(H2O) Unk Mono

VIII/H.18-50 Tosudite Na0,5(Al,Mg)6(Si,Al)8O18(OH)12·5(H2O) Unk Ortho

VIII/H.18-60 Corrensite (Ca,Na,K)(Mg,Fe,Al)9(Si,Al)8O20(OH)10·n(H2O) Unk Ortho

VIII/H.18-70 Hydrobiotite [K(Mg,Fe)3(Al,Fe)Si3O10(OH,F)2]·[(Mg,Fe,Al)3(Si,Al)4O10(OH)2·4(H2O)] C 2/m 2/m

Other Lunijianlaite Information

References:

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

See Also:

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

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Lunijianlaite

LiAl6(Si7Al)O20(OH)10
Dana No: 71.4.2.2 Strunz No: VIII/H.18-05
Locality:

Notes: