Sokolovaite Mineral Data

Sokolovaite Mineral Data

General Sokolovaite Information

Chemical Formula:

CsLi2AlSi4O10F2

Composition:

Molecular Weight = 484.10 gm

Cesium 27.45 % Cs 29.11 % Cs₂O

Lithium 2.87 % Li 6.17 % Li₂O

Aluminum 5.57 % Al 10.53 % Al₂O₃

Silicon 23.21 % Si 49.65 % SiO₂

Oxygen 33.05 % O

Fluorine 7.85 % F 7.85 % F

- % F -3.30 % -O=F₂

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

CsLi₂AlSi₄O₁₀F₂

Environment:

Tiny inclusions in pectolite and quartz matrix. Mica group

IMA Status:

Proposed IMA 2004 (Dana # Added)

Locality:

Dara-i-Pioz glacier, Tajikistan Link to MinDat.org Location Data.

Name Origin:

Commission on New Minerals and Mineral Names (CNMMN)

Synonym:

IMA2004-012

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Sokolovaite Crystallography

Axial Ratios:

a:b:c =0.5754:1:1.1873

Cell Dimensions:

a = 5.182, b = 9.005, c = 10.692, Z = 2; V = 498.93 Den(Calc)= 3.22

Crystal System:

MonoclinicSpace Group: C 2/m, C 2 or Cm

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

By Intensity(I/I_o): 3.174(1), 2.107(0.94), 3.682(0.8),2.634(0.79), 2.582(0.66), 3.418(0.65), 3.897(0.49), 2.98(0.41),

Optical Properties of Sokolovaite

Optical Data:

NCalc= 1.59 - from Gladstone-Dale relationship (KC = 0.1823) where Ncalc=Dcalc*KC+1

Calculated Properties of Sokolovaite

Electron Density:

r_electron=3.03 gm/cc
note: r_Sokolovaite=3.22 gm/cc.

Fermion Index

Fermion Index = 0.01314
Boson Index = 0.98686

Photoelectric:

PE_Sokolovaite= 112.27 barns/electron
U=PE_Sokolovaite x r_electron= 340.51 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Sokolovaite is Not Radioactive

Sokolovaite Classification

Dana Class:

71.2.2b.8b (71)Phyllosilicate Sheets of Six-Membered Rings

(71.2)with 2:1 Layers

(71.2.2b)Mica Group (Biotite subgroup)

71.2.2b.1 Phlogopite KMg3(Si3Al)O10(F,OH)2 C 2/m 2/m

71.2.2b.1a Tetra-ferriphlogopite! KMg3FeSi3O10(OH)2 2/m

71.2.2b.1b Shirozulite! KMn3(AlSi3)O10(OH,F)2 C 2/m 2/m

71.2.2b.2 Biotite* K(Mg,Fe)3[AlSi3O10(OH,F)2 C 2/m 2/m

71.2.2b.3 Annite KFe3AlSi3O10(OH,F)2 C 2/m 2/m

71.2.2b.3a Fluorannite! KFe3AlSi3O10F2 C 2/m 2/m

71.2.2b.4 Tetra-ferri-annite K(Fe,Mg)3(Fe,Al)Si3O10(OH)2 C 2/m 2/m

71.2.2b.5 Siderophyllite KFe2Al(Al2Si2)O10(F,OH)2 C 2/m 2/m

71.2.2b.5a Eastonite! KMg2Al[Al2Si2O10](OH)2 2/m

71.2.2b.6 Hendricksite K(Zn,Mg,Mn)3Si3AlO10(OH)2 C 2/m 2/m

71.2.2b.7 Lepidolite K(Li,Al)3(Si,Al)4O10(F,OH)2 C 2/m,Cm Mono

71.2.2b.8 Polylithionite KLi2AlSi4O10(F,OH)2 C 2/m 2/m

71.2.2b.8a Trilithionite! KLi1.5Al1.5AlSi3O10F2 C 2/m 2/m

71.2.2b.8b Sokolovaite ! CsLi2AlSi4O10F2 C 2/m, C 2 or Cm Mono

71.2.2b.9 Tainiolite KLiMg2Si4O10F2 C 2/m 2/m

71.2.2b.10 Zinnwaldite KLiFeAl(AlSi3)O10(F,OH)2 C 2/m 2/m

71.2.2b.11 Norrishite K(Mn2Li)Si4O10(O)2 C 2/m 2/m

71.2.2b.12 Masutomilite K(Li,Al,Mn)3[(Si,Al)4O10](F,OH)2 C 2/m 2/m

71.2.2b.13 Aspidolite NaMg3AlSi3O10(OH)2 C 2/m 2/m

71.2.2b.14 Wonesite (Na,K).5(Mg,Fe,Al)3(Si,Al)4O10(OH,F)2 C 2/m 2/m

71.2.2b.15 Preiswerkite NaMg2Al3Si2O10(OH)2 C 2/m 2/m

71.2.2b.16 Ephesite NaLiAl2(Al2Si2)O10(OH)2 C 2/c 2/m

71.2.2b.17 IMA2004-049! NaMg3(AlSi3)O10(OH)2 C 2/m 2/m

Strunz Class:

VIII/HX.00-00 VIII - Silicates

VIII/HX - Unclassified Strunz Phyllosilicates

VIII/HX.00 - Mica Group

Other Sokolovaite Information

See Also:

Links to other databases for Sokolovaite :
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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Sokolovaite

CsLi2AlSi4O10F2
Dana No: 71.2.2b.8b Strunz No: VIII/HX.00-00
Locality:

Notes: