General Tainiolite Information
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Chemical Formula: |
KLiMg2Si4O10F2 |
Composition: |
Molecular Weight = 404.98 gm |
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Potassium 9.65 % K 11.63 % K2O |
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Lithium 1.71 % Li 3.69 % Li2O |
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Magnesium 12.00 % Mg 19.90 % MgO |
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Silicon 27.74 % Si 59.35 % SiO2 |
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Oxygen 39.51 % O |
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Fluorine 9.38 % F 9.38 % F |
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- % F -3.95 % -O=F2 |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
Empirical Formula: |
KLiMg2Si4O10F2 |
Environment: |
Nepheline-syenite pegmatites. |
IMA Status: |
Valid Species (Pre-IMA) 1900 |
Locality: |
Narsarsuk, southern Greenland. Link to MinDat.org Location Data. |
Name Origin: |
Named from the Greek for "band" or "strip", inallusion to hte tabular habit of the crystals. |
Synonym: |
Taeniolite |
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Tainiolite Image |
Images:
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Tainiolite Crystallography
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Axial Ratios: |
a:b:c =0.577:1:1.1185 |
Cell Dimensions: |
a = 5.231, b = 9.065, c = 10.14, Z = 2; beta = 99.86° V = 473.73 Den(Calc)= 2.84 |
Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m |
X Ray Diffraction: |
By Intensity(I/Io): 3.33(1), 9.95(0.9), 2.4(0.4),4.98(0.4), 3.11(0.3), 4.48(0.3), 4.51(0.3), |
Crystal Structure:
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Toraya H , Iwai S , Marumo F , Hirao M , Zeitschrift fur Kristallographie , 146 (1977) p.73-83, The crystal structure of taeniolite, KLiMg2Si4O10F2, Note: this is the 1M polytype, Locality: synthetic
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Physical Properties of Tainiolite
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Cleavage: |
[001] Perfect |
Color: |
Brownish, Colorless, Greenish brown. |
Density: |
2.9 |
Diaphaniety: |
Transparent |
Fracture: |
Flexible - Flexible fragments. |
Habit: |
Foliated - Two dimensional platy forms. |
Habit: |
Micaceous - Platy texture with "flexible" plates. |
Hardness: |
2.5-3 - Finger Nail-Calcite |
Luminescence: |
Fluorescent. |
Luster: |
Vitreous (Glassy) |
Streak: |
white |
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Optical Properties of Tainiolite
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Gladstone-Dale: |
CI meas= 0.058 (Good) - where the CI = (1-KPDmeas/KC) CI calc= 0.038 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1941,KPDmeas= 0.1901,KC= 0.2018 |
Optical Data: |
Biaxial (-), a=1.522-1.54, b=1.553-1.57, g=1.553-1.57, bire=0.0300-0.0310, 2V(Calc)=0, 2V(Meas)=2-5. Dispersion r > v or r < v. |
Pleochroism (x): |
colorless. |
Pleochroism (y): |
colorless. |
Pleochroism (z): |
pale yellow. |
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Calculated Properties of Tainiolite
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Electron Density: |
relectron=2.81 gm/cc note: rTainiolite =2.84 gm/cc. |
Fermion Index |
Fermion Index = 0.02644 Boson Index = 0.97356 |
Photoelectric: |
PETainiolite = 2.36 barns/electron U=PETainiolite x relectron= 6.62 barns/cc. |
Radioactivity: |
GRapi = 137.57 (Gamma Ray American Petroleum Institute Units)
Estimated Radioactivity from Tainiolite - barely detectable
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Tainiolite Classification
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Dana Class: |
71.2.2b.9 (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.11-20 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 Tainiolite Information
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References: |
NAME( Dana8) PHYS. PROP.(Dana) OPTIC PROP.(Dana8) |
See Also: |
Links to other databases for Tainiolite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 -Am. Min. Crystal Structure Database
4 - Amethyst Galleries' Mineral Gallery
5 -Athena
6 -Google Images
7 -Google Scholar
8 -MinDAT
9 -MinMax(Deutsch)
10 -MinMax(English)
11 -Mineralienatlas (Deutsch)
12 -QUT Mineral Atlas
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Print or Cut-and-Paste your Tainiolite Specimen Label here :
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Tainiolite
KLiMg2Si4O10F2
Dana No: 71.2.2b.9 Strunz No: VIII/H.11-20
Locality:
Notes:
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