Lunijianlaite Mineral Data
General Lunijianlaite Information
Chemical Formula:
LiAl6(Si7Al)O20(OH)10
Composition:
Molecular Weight = 882.47 gm
Lithium 0.79 % Li 1.69 % Li2 O
Aluminum 21.40 % Al 40.44 % Al2 O3
Silicon 22.28 % Si 47.66 % SiO2
Hydrogen 1.14 % H 10.21 % H2 O
Oxygen 54.39 % O
______ ______
100.00 % 100.00 % = TOTAL OXIDE
Empirical Formula:
LiAl7 Si7 O20 (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".
Name Pronunciation:
Lunijianlaite + Pronunciation
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:
Monoclinic Space Group: Unk
X Ray Diffraction:
By Intensity(I/Io ): 4.704(1), 3.343(0.47), 3.539(0.45),
Physical Properties of Lunijianlaite
Cleavage:
{001} Perfect
Color:
Colorless, White.
Density:
2.75
Diaphaneity:
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 Ncalc = 1.61
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:
Bulk Density (Electron Density)=2.74 gm/cc note: Specific Gravity of Lunijianlaite =2.74 gm/cc.
Fermion Index:
Fermion Index = 0.01 Boson Index = 0.99
Photoelectric:
PELunijianlaite = 1.51 barns/electronU=PELunijianlaite x r Electron Density= 4.14 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Lunijianlaite is Not Radioactive
Lunijianlaite Classification
Dana Class:
71.04.02.02 (71) Phyllosilicate Sheets of Six-Membered Rings
(71.04) interlayered 1:1, 2:1, and octahedra
(71.04.02) Interstratified Chlorite-Smectite group
71.04.02.01 Dozyite (Mg7Al2)(Si4Al2)O15(OH)12 Cm m
71.04.02.02 Lunijianlaite LiAl6(Si7Al)O20(OH)10 Unk Mono
71.04.02.03 Saliotite Na0.5Li0.5Al3AlSi3O10(OH)5 C 2/m 2/m
71.04.02.04 Tosudite Na0,5(Al,Mg)6(Si,Al)8O18(OH)12•5(H2O) Unk Ortho
71.04.02.05 Corrensite (Ca,Na,K)(Mg,Fe,Al)9(Si,Al)8O20(OH)10•n(H2O) Unk Ortho
71.04.02.06 Kulkeite Na0.35Mg8AlSi7O20(OH)10 Unk Mono
71.04.02.07 Rectorite (Na,Ca)Al4(Si,Al)8O20(OH)4•2(H2O) Unk Mono
71.04.02.08 Aliettite [Mg3Si4O10(OH)2](Ca0.5,Na)0.33(Al,Mg,Fe)2-3(Si,Al)4O10(OH)2•n(H2O) Unk Mono
71.04.02.09 Glagolevite ! NaMg6[Si3AlO10](OH,O)8•H2O C1 1
Strunz Class:
09.EC.60 09 - SILICATES (Germanates)
09.E - Phyllosilicates
09.EC -Phyllosilicates with mica sheets, composed of tetrahedral and octahedral nets
09.EC.60 Aliettite [Mg3Si4O10(OH)2](Ca0.5,Na)0.33(Al,Mg,Fe)2-3(Si,Al)4O10(OH)2•n(H2O) Unk Mono
09.EC.60 Dozyite (Mg7Al2)(Si4Al2)O15(OH)12 Cm m
09.EC.60 Corrensite (Ca,Na,K)(Mg,Fe,Al)9(Si,Al)8O20(OH)10•n(H2O) Unk Ortho
09.EC.60 Kulkeite Na0.35Mg8AlSi7O20(OH)10 Unk Mono
09.EC.60 Karpinskite (Mg,Ni)2Si2O5(OH)2(?) Unk Mono
09.EC.60 Illite * (K,H3O)(Al,Mg,Fe)2(Si,Al)4O10[(OH)2,(H2O)] C 2/m 2/m
09.EC.60 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
09.EC.60 Lunijianlaite LiAl6(Si7Al)O20(OH)10 Unk Mono
09.EC.60 Rectorite (Na,Ca)Al4(Si,Al)8O20(OH)4•2(H2O) Unk Mono
09.EC.60 Saliotite Na0.5Li0.5Al3AlSi3O10(OH)5 C 2/m 2/m
09.EC.60 Tosudite Na0,5(Al,Mg)6(Si,Al)8O18(OH)12•5(H2O) Unk Ortho
09.EC.60 Brinrobertsite ! (Na,K,Ca)x(Al,Fe,Mg)4(Si,Al)8O20(OH)4•3.54(H2O)[x=0.35,n=3.54] pseudo 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 - 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
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Lunijianlaite
LiAl6(Si7Al)O20(OH)10
Dana No: 71.04.02.02 Strunz No: 09.EC.60
Locality:
Notes:
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