General Trilithionite Information
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Chemical Formula: |
KLi1.5Al1.5AlSi3O10F2 |
Composition: |
Molecular Weight = 399.21 gm |
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Potassium 9.79 % K 11.80 % K2O |
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Lithium 2.61 % Li 5.61 % Li2O |
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Aluminum 16.90 % Al 31.93 % Al2O3 |
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Silicon 21.11 % Si 45.15 % SiO2 |
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Oxygen 40.08 % O |
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Fluorine 9.52 % F 9.52 % F |
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- % F -4.01 % -O=F2 |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
Empirical Formula: |
KLi1.5Al2.5Si3O10F2 |
Environment: |
Intermediate composition near polylithionite |
IMA Status: |
Approved IMA 1960 (Dana # Added) |
Locality: |
Link to MinDat.org Location Data. |
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Trilithionite Image |
Images:
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Trilithionite Crystallography
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Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m |
Crystal Structure:
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Brigatti M F , Caprilli E , Malferrari D , Medici L , Poppi L , European Journal of Mineralogy , 17 (2005) p.475-481, Crystal structure and chemistry of trilithionite-2M2 and polylithionite-2M2, Note: sample Lch 59a, Locality: Chedeville, France
View Additional jPOWD Structure files for Trilithionite
[1]
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Physical Properties of Trilithionite
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Cleavage: |
[001] Perfect |
Color: |
White. |
Diaphaniety: |
Translucent |
Fracture: |
Elastic - Fragments which spring back after bending. |
Habit: |
Micaceous - Platy texture with "flexible" plates. |
Luster: |
Vitreous (Glassy) |
Streak: |
white |
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Calculated Properties of Trilithionite
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Fermion Index |
Fermion Index = 0.01201 Boson Index = 0.98799 |
Photoelectric: |
PETrilithionite = 2.36 barns/electron U=PETrilithionite x relectron= . barns/cc. |
Radioactivity: |
GRapi = 138.78 (Gamma Ray American Petroleum Institute Units)
Estimated Radioactivity from Trilithionite - barely detectable
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Trilithionite Classification
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Dana Class: |
71.2.2b.8a (71)Phyllosilicate Sheets of Six-Membered Rings |
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(71.2)with 2:1 Layers |
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(71.2.2b)Mica Group (Biotite subgroup) |
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71.2.2b.1 Phlogopite KMg3(Si3Al)O10(F,OH)2 C 2/m 2/m |
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71.2.2b.1a Tetra-ferriphlogopite! KMg3FeSi3O10(OH)2 2/m |
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71.2.2b.1b Shirozulite! KMn3(AlSi3)O10(OH,F)2 C 2/m 2/m |
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71.2.2b.2 Biotite* K(Mg,Fe)3[AlSi3O10(OH,F)2 C 2/m 2/m |
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71.2.2b.3 Annite KFe3AlSi3O10(OH,F)2 C 2/m 2/m |
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71.2.2b.3a Fluorannite! KFe3AlSi3O10F2 C 2/m 2/m |
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71.2.2b.4 Tetra-ferri-annite K(Fe,Mg)3(Fe,Al)Si3O10(OH)2 C 2/m 2/m |
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71.2.2b.5 Siderophyllite KFe2Al(Al2Si2)O10(F,OH)2 C 2/m 2/m |
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71.2.2b.5a Eastonite! KMg2Al[Al2Si2O10](OH)2 2/m |
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71.2.2b.6 Hendricksite K(Zn,Mg,Mn)3Si3AlO10(OH)2 C 2/m 2/m |
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71.2.2b.7 Lepidolite K(Li,Al)3(Si,Al)4O10(F,OH)2 C 2/m,Cm Mono |
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71.2.2b.8 Polylithionite KLi2AlSi4O10(F,OH)2 C 2/m 2/m |
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71.2.2b.8a Trilithionite ! KLi1.5Al1.5AlSi3O10F2 C 2/m 2/m |
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71.2.2b.8b Sokolovaite! CsLi2AlSi4O10F2 C 2/m, C 2 or Cm Mono |
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71.2.2b.9 Tainiolite KLiMg2Si4O10F2 C 2/m 2/m |
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71.2.2b.10 Zinnwaldite KLiFeAl(AlSi3)O10(F,OH)2 C 2/m 2/m |
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71.2.2b.11 Norrishite K(Mn2Li)Si4O10(O)2 C 2/m 2/m |
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71.2.2b.12 Masutomilite K(Li,Al,Mn)3[(Si,Al)4O10](F,OH)2 C 2/m 2/m |
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71.2.2b.13 Aspidolite NaMg3AlSi3O10(OH)2 C 2/m 2/m |
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71.2.2b.14 Wonesite (Na,K).5(Mg,Fe,Al)3(Si,Al)4O10(OH,F)2 C 2/m 2/m |
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71.2.2b.15 Preiswerkite NaMg2Al3Si2O10(OH)2 C 2/m 2/m |
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71.2.2b.16 Ephesite NaLiAl2(Al2Si2)O10(OH)2 C 2/c 2/m |
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71.2.2b.17 IMA2004-049! NaMg3(AlSi3)O10(OH)2 C 2/m 2/m |
Strunz Class: |
VIII/H.11-50 VIII - Silicates |
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VIII/H - Phyllosilicates (layered) Mica like layered silicates with [Si4O10]4- and related groups |
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VIII/H.11 - Mica group, Biotite series |
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VIII/H.11-00* Zinnwaldite KLiFeAl(AlSi3)O10(F,OH)2 C 2/m 2/m |
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VIII/H.11-10 Polylithionite KLi2AlSi4O10(F,OH)2 C 2/m 2/m |
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VIII/H.11-20 Tainiolite KLiMg2Si4O10F2 C 2/m 2/m |
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VIII/H.11-30 Norrishite K(Mn2Li)Si4O10(O)2 C 2/m 2/m |
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VIII/H.11-35 Shirokshinite! K(NaMg2)Si4O10F2 C 2/m 2/m |
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VIII/H.11-40 Montdorite (K,Na)(Fe,Mn,Mg)2.5[Si4O10](F,OH)2 C 2/c 2/m |
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VIII/H.11-50 Trilithionite KLi1.5Al1.5AlSi3O10F2 C 2/m 2/m |
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VIII/H.11-60 Masutomilite K(Li,Al,Mn)3[(Si,Al)4O10](F,OH)2 C 2/m 2/m |
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VIII/H.11-70 Aspidolite NaMg3AlSi3O10(OH)2 C 2/m 2/m |
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VIII/H.11-80 Phlogopite KMg3(Si3Al)O10(F,OH)2 C 2/m 2/m |
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VIII/H.11-90 Tetra-ferriphlogopite! KMg3FeSi3O10(OH)2 2/m |
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VIII/H.11-100 Hendricksite K(Zn,Mg,Mn)3Si3AlO10(OH)2 C 2/m 2/m |
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VIII/H.11-102 Shirozulite! KMn3(AlSi3)O10(OH,F)2 C 2/m 2/m |
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VIII/H.11-105 Fluorannite! KFe3AlSi3O10F2 C 2/m 2/m |
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VIII/H.11-110 Annite KFe3AlSi3O10(OH,F)2 C 2/m 2/m |
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VIII/H.11-120 Tetra-ferri-annite K(Fe,Mg)3(Fe,Al)Si3O10(OH)2 C 2/m 2/m |
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VIII/H.11-130 Ephesite NaLiAl2(Al2Si2)O10(OH)2 C 2/c 2/m |
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VIII/H.11-140 Preiswerkite NaMg2Al3Si2O10(OH)2 C 2/m 2/m |
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VIII/H.11-150 Eastonite! KMg2Al[Al2Si2O10](OH)2 2/m |
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VIII/H.11-160 Siderophyllite KFe2Al(Al2Si2)O10(F,OH)2 C 2/m 2/m |
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Other Trilithionite Information
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See Also: |
Links to other databases for Trilithionite :
1 -Am. Min. Crystal Structure Database
2 -Athena
3 -Google Images
4 -Google Scholar
5 -MinDAT
6 -MinMax(Deutsch)
7 -MinMax(English)
8 -Mineralienatlas (Deutsch)
9 -QUT Mineral Atlas
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Trilithionite
KLi1.5Al1.5AlSi3O10F2
Dana No: 71.2.2b.8a Strunz No: VIII/H.11-50
Locality:
Notes:
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